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Text File  |  1993-11-15  |  24.2 KB  |  1,513 lines
  1.  
  2.  
  3. %
  4. #EF
  5. #TUNDERSTANDING THE RS-232 INTERFACE
  6. #C5,R5
  7. ~z~Y~IWHY RS-232 ?~N
  8.  
  9.  
  10. ~y~W~IRS-232 exists so that different vendors can offer equipment that
  11.  
  12. can communicate with each other.~N ~FRS-232 is a physical interface; ~Han
  13.  
  14. agreement between vendors defining how equipment communicate.~N
  15. #C15
  16.  
  17.  
  18. ~r~W~IThere are two members to the RS-232 interface:~N
  19.  
  20. ~W~IData Terminal Equipment members |DTE|, and
  21.  
  22. Data Circuit Equipment members  |DCE|.~N
  23.  
  24. #WN
  25. %
  26. #EF
  27. #T
  28. #C15,R5
  29.  
  30. ~y~ZRS-232 use DB25 type connectors:~N
  31.  
  32. ~C~IMale DB25s are on the DTE members.
  33.  
  34. Females are on the DCE members.~N
  35.  
  36. #C5
  37. ~g~W~IPCs and Printers most commonly have DTE type interfaces.~N
  38.  
  39. ~y~W~IModems, mice, and digitizers commonly have DCE interfaces.~N
  40.  
  41. RS-232 is a digital interface designed to communicate at ~H~F20,000 bps~N
  42.  
  43. and not to exceed ~H~F50 feet.~N  There are 25 lines defined in the RS-232
  44.  
  45. interface, each having a separate function. ~y~Z RS-232 is designed for
  46.  
  47. both synchronous and asynchronous communications.~N
  48.  
  49.  
  50. #W,P
  51. %
  52. #EW,15,2
  53. #T
  54. #AR,1,5
  55. RS-232 IS DESIGNED TO
  56.  
  57. ALLOW DTE INTERFACES TO COMMUNICATE
  58.  
  59. ONLY WITH DCE INTERFACES.
  60.  
  61. #WP,N
  62. %
  63. #EF
  64. #T
  65. #C4,R5
  66. ~z~Y~IRS-232 Voltage and Control~N
  67.  
  68. ~H~Y~I~KLines are "on" when +3 volts or more are present.
  69.  
  70. #D2
  71. Lines are "off" when -3 volts or less are present.~N~k
  72. #D1
  73.  
  74.  
  75. ~z~Y~ITen Important Asynchronous Lines~N
  76.  
  77.  
  78. ~K~H~G~IIn RS-232, each line is controlled by either one side or the other.~k
  79.  
  80. ~S~F~W~IThe Transmit data line,~N~s for example, ~S~F~W~Iis an input for one side and an
  81.  
  82. output by the other side.~s~N
  83. #D2
  84.  
  85. ~y~Y~IIf both sides viewed Transmit Data as an input, both would be transmitting
  86.  
  87. data that was never received.~N
  88. #D1
  89. #W,P
  90. %
  91. #EF
  92. #T
  93. #C4,R5
  94. ~z~W~IRS-232 Leads~N
  95. #HH,4,8,75,2,15,1
  96.  
  97. ~y~W~IDescription             Pin #             From             Abbreviation~N
  98.  
  99.  
  100. ~H~KData Leads~k~N
  101.  
  102. Transmit Data            2                DTE               ~KTD~k
  103. Receive Data             3                DCE               ~KRD~k
  104.  
  105.  
  106. ~H~KPower-On Indicators~k~N
  107.  
  108. Data Set Ready           6                DCE               ~KDSR~k
  109. Data Terminal Ready      20               DTE               ~KDTR~k
  110.  
  111. #W,P,N
  112. %
  113. #EF
  114. #T
  115. #C4,R5
  116. ~z~W~IRS-232 Table Cont'd~N
  117. #HH,4,8,75,2,15,1
  118.  
  119. ~y~W~IDescription             Pin #             From             Abbreviation~N
  120.  
  121.  
  122. ~H~KOutside Event Announcement~k~N
  123.  
  124. Data Carrier Detect      8                DCE                ~KCD~k
  125. Ring Indicator           22               DCE                ~KRI~k
  126.  
  127.  
  128. ~H~KReady to Send/Handshake~k~N
  129.  
  130. Request to Send          4                DTE                ~KRTS~k
  131. Clear to Send            5                DCE                ~KCTS~k
  132. #W,P,N
  133.  
  134. %
  135. #EF
  136. #T
  137. #C4,R5
  138. ~z~W~IRS-232 Table Cont'd~N
  139. #HH,4,8,75,2,15,1
  140.  
  141. ~y~W~IDescription             Pin #             From             Abbreviation~N
  142.  
  143.  
  144. ~H~KGround Leads~k~N
  145.  
  146. Signal Ground            7                -                    ~KSG~k
  147. Protective Ground        1                -                    ~KFG~k
  148. #W,P
  149. %
  150. #EW
  151. #AP,1,12
  152. Now we will look at the sequence
  153. of events for
  154. a normal RS-232 session.
  155.  
  156. At "power up" status:
  157.  
  158. DTE activates line 20, DTR.
  159. DCE activates line 6, DSR.
  160.  
  161. DTE dials remote modem which also has been
  162. powered up.  The remote answers and carrier
  163. is linked.
  164. #WP
  165.  
  166. %
  167. #EW,14,0
  168. #T
  169. #C4,R3
  170. RS-232 DTE-DCE PROTOCOL ACTIVITY
  171. #C7,R5
  172. ~b~W~ITRANSMITTER~N
  173.  
  174. #BN,7,7,12,19,0,0,1,3,15,7
  175. D
  176. T
  177. E
  178. #C3,R8
  179. TD
  180. #C3,R9
  181. RD
  182. #C3,R10
  183. RTS
  184. #C3,R11
  185. CTS
  186. #C3,R12
  187. DSR
  188. #C3,R13
  189. SG
  190. #C3,R14
  191. DCD
  192. #C3,R15
  193. DTR
  194. #C3,R16
  195. RI
  196. #C3,R17
  197. FG
  198.  
  199. #BN,24,7,29,19,0,0,1,5,14,6
  200. M
  201. O
  202. D
  203. E
  204. M
  205.  
  206. #BN,39,7,44,19,0,0,1,5,14,6
  207. M
  208. O
  209. D
  210. E
  211. M
  212.  
  213. #BN,62,7,67,19,0,0,1,3,15,7
  214. D
  215. T
  216. E
  217. #C62,R5
  218. ~r~W~IRECEIVER~N
  219.  
  220. #C69,R8
  221. TD
  222. #C69,R9
  223. RD
  224. #C69,R10
  225. RTS
  226. #C69,R11
  227. CTS
  228. #C69,R12
  229. DSR
  230. #C69,R13
  231. SG
  232. #C69,14
  233. DCD
  234. #C69,15
  235. DTR
  236. #C69,16
  237. RI
  238. #C69,17
  239. FG
  240. #ES,1,22,75,28,14,0
  241. #C13,R22
  242. ~b~W~IFRAME AND SIGNAL GROUND ARE PRESENT AT EACH MODEM LOCATION~N
  243. #D3
  244. #HH,13,17,23,1,2,0
  245. #HH,45,13,61,1,2,0
  246. #HP,T,R,1,17,4,0
  247. #HP,T,R,1,13,4,0
  248. #HP,T,L,73,17,4,0
  249. #HP,T,L,73,13,4,0
  250.  
  251. #HH,13,13,23,1,2,0
  252. #HH,45,17,61,1,2,0
  253. #D1
  254. #W,P,N
  255.  
  256.  
  257. #ES,1,22,75,28,14,0
  258. #C13,R22
  259. ~b~W~IDATA TERMINAL READY IS ACTIVATED BY EACH TERMINAL~N
  260. #D2
  261. #ES,1,5,1,18,14,0
  262. #ES,73,5,73,18,14,0
  263.  
  264. #HP,T,R,1,15,4,0
  265. #HP,T,L,73,15,4,0
  266.  
  267. #D2
  268. #HH,13,15,23,1,15,0
  269. #HP,T,R,23,15,15,0
  270. #HH,45,15,61,1,15,0
  271. #HP,T,L,45,15,15,0
  272. #D1
  273. #W,P
  274.  
  275.  
  276. #ES,1,22,75,28,14,0
  277. #C15,R22
  278. ~b~W~IDATA SET READY IS ACTIVATED AT MODEM POWER UP~N
  279. #D4
  280. #ES,1,5,1,18,14,0
  281. #ES,73,5,73,18,14,0
  282.  
  283. #HP,T,R,1,12,4,0
  284. #HP,T,L,73,12,4,0
  285.  
  286. #D2
  287. #HH,13,12,23,1,6,0
  288. #HP,T,L,13,12,6,0
  289. #HH,45,12,61,1,6,0
  290. #HP,T,R,61,12,6,0
  291. #D1
  292. #W,P,N
  293.  
  294. #ES,1,22,75,28,14,0
  295. #C20,R22
  296. ~b~W~IDAILUP REMOTE MODEM LOCATION~N
  297. #D3
  298. #ES,1,5,1,18,14,0
  299. #ES,73,5,73,18,14,0
  300.  
  301. #HP,T,R,1,16,4,0
  302.  
  303. #D1
  304. #HH,13,16,23,1,14,0
  305. #HP,T,R,23,16,14,0
  306.  
  307. #HH,30,15,38,1,14,0
  308. #HP,T,R,38,15,14,0
  309.  
  310. #HH,45,16,61,1,14,0
  311. #HP,T,R,61,16,14,0
  312. #HP,T,L,73,16,4,0
  313. #D1
  314. #WP
  315.  
  316. #ES,1,22,75,28,14,0
  317. #C15,R22
  318. ~b~W~IRING INDICATOR FORCES CARRIER DETECT ANSWER~N
  319. #D3
  320. #ES,1,5,1,18,14,0
  321. #HP,T,L,73,14,4,0
  322. #D1
  323. #HP,T,R,1,14,4,0
  324. #HP,T,L,60,14,4,0
  325. #HH,45,14,61,1,4,0
  326. #D1
  327. #HP,T,L,45,14,4,0
  328.  
  329. #HP,T,L,37,14,4,0
  330. #HH,30,14,38,1,4,0
  331. #HP,T,L,30,14,4,0
  332. #D1
  333.  
  334. #HP,T,L,23,14,4,0
  335. #HH,13,14,23,1,4,0
  336. #HP,T,L,13,14,4,0
  337. #D1
  338. #WN,P
  339.  
  340. #ES,1,22,75,28,14,0
  341. #C24,R22
  342. ~b~W~IRING INDICATOR DROPS~N
  343. #D2
  344. #ES,45,16,61,16,14,0
  345. #ES,73,16,73,18,14,0
  346.  
  347. #ES,30,15,38,15,14,0
  348.  
  349. #ES,13,16,23,16,14,0
  350. #D1
  351. #W,P
  352.  
  353. #ES,1,22,75,28,14,0
  354. #C12,R22
  355. ~b~W~ICARRIER CONNECTIVITY IS ESTABLISHED BETWEEN THE MODEMS~N
  356. #D3
  357. #ES,13,14,23,14,14,0
  358. #ES,45,14,61,14,14,0
  359.  
  360. #HH,30,14,38,1,4,0
  361. #HP,T,R,38,14,4,0
  362.  
  363. #ES,30,14,38,14,14,0
  364.  
  365. #HP,T,R,30,14,12,0
  366. #HH,30,14,38,1,12,0
  367. #HP,T,R,33,14,12,0
  368.  
  369. #ES,30,14,38,14,12,0
  370.  
  371. #HH,30,14,38,1,12,0
  372. #HP,T,R,35,14,12,0
  373.  
  374. #ES,30,14,38,14,12,0
  375.  
  376. #HH,30,14,38,1,12,0
  377. #HP,T,R,38,14,12,0
  378. #D1
  379.  
  380. #HP,T,L,30,14,12,0
  381. #HH,30,14,38,1,12,0
  382. #HP,T,L,33,14,12,0
  383.  
  384. #ES,30,14,38,14,14,0
  385.  
  386. #HH,30,14,38,1,12,0
  387. #HP,T,L,35,14,12,0
  388.  
  389. #ES,30,14,38,14,14,0
  390.  
  391. #ES,30,14,38,14,12,0
  392. #HP,T,R,31,14,12,0
  393. #HH,30,14,38,1,12,0
  394. #HP,T,R,36,14,12,0
  395. #ES,30,14,38,14,12,0
  396. #D1
  397. #HP,T,R,33,14,12,0
  398. #HH,30,14,38,1,12,0
  399. #HP,T,R,38,14,12,0
  400. #D1
  401. #ES,30,14,38,14,14,0
  402. #HP,T,R,31,14,4,0
  403. #HH,30,14,38,1,12,0
  404. #HP,T,R,36,14,12,0
  405. #ES,30,14,38,14,12,0
  406. #D1
  407. #HP,T,R,33,14,12,0
  408. #HH,30,14,38,1,12,0
  409. #D1
  410. #HP,T,R,38,14,12,0
  411.  
  412. #ES,30,14,38,14,12,0
  413. #HP,T,R,31,14,12,0
  414. #HH,30,14,38,1,12,0
  415. #HP,T,R,36,14,12,0
  416. #ES,30,14,38,14,12,0
  417. #D1
  418. #HP,T,R,33,14,12,0
  419. #HH,30,14,38,1,12,0
  420. #HP,T,R,38,14,12,0
  421. #D1
  422. #ES,30,14,38,14,4,0
  423. #HP,T,R,31,14,4,0
  424. #HH,30,14,38,1,4,0
  425. #HP,T,R,36,14,4,0
  426. #ES,30,14,38,14,4,0
  427. #D1
  428. #ES,30,14,38,14,12,0
  429. #HP,T,L,31,14,12,0
  430. #HH,30,14,38,1,12,0
  431. #HP,T,L,36,14,12,0
  432. #ES,30,14,38,14,12,0
  433. #D1
  434. #HP,T,L,33,14,12,0
  435. #HH,30,14,38,1,12,0
  436. #HP,T,R,38,14,12,0
  437. #D1
  438. #ES,30,14,38,14,4,0
  439. #HP,T,L,30,14,4,0
  440. #HH,30,14,38,1,4,0
  441. #HP,T,R,36,14,4,0
  442. #ES,30,14,38,14,4,0
  443. #D1
  444.  
  445. #HP,T,R,33,14,12,0
  446. #HH,30,14,38,1,12,0
  447. #HP,T,R,38,14,12,0
  448.  
  449. #HH,30,14,38,1,12,0
  450. #HP,T,R,37,14,12,0
  451.  
  452. #ES,30,14,38,14,14,0
  453.  
  454. #HH,30,14,38,1,12,0
  455. #HP,T,R,38,14,12,0
  456. #ES,30,14,38,14,14,0
  457. #HH,30,14,38,1,12,0
  458. #HP,T,L,30,14,12,0
  459. #HP,T,R,38,14,12,0
  460. #D1
  461. #WP,N
  462.  
  463. #ES,1,22,75,28,14,0
  464. #C18,R22
  465. ~b~W~IREQUEST TO SEND IS ACTIVATED BY THE DTE~N
  466. #D4
  467. #HP,T,R,1,10,4,0
  468. #ES,45,8,61,8,14,0
  469. #ES,13,9,23,9,14,0
  470. #ES,45,9,61,9,14,0
  471. #ES,13,8,23,8,14,0
  472. #ES,13,14,23,14,14,0
  473. #ES,45,14,61,14,14,0
  474. #ES,13,10,23,10,14,0
  475. #ES,45,10,61,10,14,0
  476. #ES,13,11,23,11,14,0
  477. #ES,45,11,61,11,14,0
  478.  
  479. #ES,1,12,1,17,14,0
  480. #ES,73,12,73,17,14,0
  481.  
  482. #ES,13,14,23,14,14,0
  483. #ES,45,14,61,14,14,0
  484.  
  485. #HP,T,R,13,10,7,0
  486. #HH,13,10,23,1,7,0
  487. #HP,T,R,16,10,7,0
  488. #ES,13,10,23,10,14,0
  489. #HP,T,R,17,10,7,0
  490. #HH,13,10,23,1,7,0
  491. #HP,T,R,23,10,7,0
  492. #ES,13,10,23,10,14,0
  493. #HP,T,R,14,10,7,0
  494. #HH,13,10,23,1,7,0
  495. #HP,T,R,18,10,7,0
  496. #ES,13,10,23,10,14,0
  497. #HP,T,R,19,10,7,0
  498. #HH,13,10,23,1,7,0
  499. #HP,T,R,23,10,7,0
  500. #ES,13,10,23,10,14,0
  501. #HP,T,R,13,10,7,0
  502. #HH,13,10,23,1,7,0
  503. #HP,T,R,16,10,7,0
  504. #ES,13,10,23,10,14,0
  505. #HP,T,R,17,10,7,0
  506. #HH,13,10,23,1,7,0
  507. #HP,T,R,23,10,7,0
  508. #ES,13,10,23,10,14,0
  509. #HP,T,R,13,10,7,0
  510. #HH,13,10,23,1,7,0
  511. #HP,T,R,16,10,7,0
  512. #ES,13,10,23,10,14,0
  513. #HP,T,R,17,10,7,0
  514. #HH,13,10,23,1,7,0
  515. #HP,T,R,23,10,7,0
  516.  
  517. #D1
  518. #HP,T,R,13,10,7,0
  519. #HH,13,10,23,1,7,0
  520. #HP,T,R,16,10,7,0
  521. #ES,13,10,23,10,14,0
  522. #HP,T,R,17,10,7,0
  523. #HH,13,10,23,1,7,0
  524. #HP,T,R,23,10,7,0
  525.  
  526. #HP,T,R,13,10,7,0
  527. #HH,13,10,23,1,7,0
  528. #HP,T,R,16,10,7,0
  529. #ES,13,10,23,10,14,0
  530. #HP,T,R,17,10,7,0
  531. #HH,13,10,23,1,7,0
  532. #HP,T,R,23,10,7,0
  533.  
  534. #D1
  535. #HP,T,R,13,10,7,0
  536. #HH,13,10,23,1,7,0
  537. #HP,T,R,16,10,7,0
  538. #ES,13,10,23,10,14,0
  539. #HP,T,R,17,10,7,0
  540. #HH,13,10,23,1,7,0
  541. #HP,T,R,23,10,7,0
  542.  
  543. #HP,T,R,13,10,7,0
  544. #HH,13,10,23,1,7,0
  545. #HP,T,R,16,10,7,0
  546.  
  547. #ES,13,10,23,10,14,0
  548.  
  549. #HP,T,R,17,10,7,0
  550. #HH,13,10,23,1,7,0
  551. #HP,T,R,23,10,7,0
  552.  
  553. #ES,13,10,23,10,14,0
  554.  
  555. #HP,T,R,13,10,7,0
  556. #HH,13,10,23,1,7,0
  557. #HP,T,R,16,10,7,0
  558. #ES,13,10,23,10,14,0
  559. #HP,T,R,17,10,7,0
  560. #HH,13,10,23,1,7,0
  561. #HP,T,R,23,10,7,0
  562.  
  563. #ES,13,10,23,10,14,0
  564.  
  565. #HP,T,R,13,10,7,0
  566. #HH,13,10,23,1,7,0
  567. #HP,T,R,16,10,7,0
  568. #ES,13,10,23,10,14,0
  569. #HP,T,R,17,10,7,0
  570. #HH,13,10,23,1,7,0
  571. #HP,T,R,23,10,7,0
  572.  
  573. #D1
  574. #HP,T,R,13,10,7,0
  575. #HH,13,10,23,1,7,0
  576. #HP,T,R,16,10,7,0
  577. #ES,13,10,23,10,14,0
  578. #HP,T,R,17,10,7,0
  579. #HH,13,10,23,1,7,0
  580. #HP,T,R,23,10,7,0
  581.  
  582. #HP,T,R,13,10,7,0
  583. #HH,13,10,23,1,7,0
  584. #HP,T,R,16,10,7,0
  585. #ES,13,10,23,10,14,0
  586. #HP,T,R,17,10,7,0
  587. #HH,13,10,23,1,7,0
  588. #HP,T,R,23,10,7,0
  589.  
  590. #D1
  591. #HP,T,R,13,10,7,0
  592. #HH,13,10,23,1,7,0
  593. #HP,T,R,16,10,7,0
  594. #ES,13,10,23,10,14,0
  595. #HP,T,R,17,10,7,0
  596. #HH,13,10,23,1,7,0
  597. #HP,T,R,23,10,7,0
  598.  
  599. #HP,T,R,13,10,7,0
  600. #HH,13,10,23,1,7,0
  601. #HP,T,R,16,10,7,0
  602. #ES,13,10,23,10,14,0
  603. #HP,T,R,17,10,7,0
  604. #HH,13,10,23,1,7,0
  605. #HP,T,R,23,10,7,0
  606.  
  607. #HP,T,R,13,10,7,0
  608. #HH,13,10,23,1,7,0
  609. #HP,T,R,16,10,7,0
  610. #ES,13,10,23,10,14,0
  611. #HP,T,R,17,10,7,0
  612. #HH,13,10,23,1,7,0
  613. #HP,T,R,23,10,7,0
  614. #D1
  615. #WN,P
  616.  
  617.  
  618. #ES,1,22,75,28,14,0
  619. #C11,R22
  620. ~b~W~ICARRIER IS CHECKED BY MODEM TO SEE IF FAR END RTS IS HIGH~N
  621. #D4
  622. #ES,13,14,23,14,4,0
  623. #HP,T,R,1,14,4,0
  624. #HP,T,R,13,14,4,0
  625. #HH,13,14,23,1,4,0
  626. #HP,T,R,18,14,4,0
  627. #ES,13,14,23,14,14,0
  628. #HP,T,R,20,14,4,0
  629. #HH,13,14,23,1,4,0
  630. #HP,T,R,23,14,4,0
  631.  
  632. #ES,13,14,23,14,4,0
  633.  
  634. #HP,T,R,15,14,4,0
  635. #HH,13,14,23,1,4,0
  636. #HP,T,R,19,14,4,0
  637. #ES,13,14,23,14,14,0
  638. #HP,T,R,20,14,4,0
  639. #HH,13,14,23,1,4,0
  640. #HP,T,R,23,14,4,0
  641.  
  642. #ES,30,14,38,14,4,0
  643.  
  644. #HP,T,R,30,14,4,0
  645. #HH,30,14,38,1,4,0
  646. #HP,T,R,33,14,4,0
  647.  
  648. #ES,30,14,38,14,4,0
  649.  
  650. #HP,T,R,35,14,4,0
  651. #HH,30,14,38,1,4,0
  652. #HP,T,R,38,14,4,0
  653.  
  654. #HP,T,R,45,14,4,0
  655. #HH,45,14,61,1,4,0
  656. #HP,T,R,50,14,4,0
  657.  
  658. #ES,45,14,61,14,4,0
  659.  
  660. #HP,T,R,51,14,4,0
  661. #HH,45,14,61,1,4,0
  662. #HP,T,R,61,14,4,0
  663. #D1
  664. #ES,13,14,23,14,4,0
  665. #HP,T,R,1,14,4,0
  666. #HP,T,R,13,14,4,0
  667. #HH,13,14,23,1,4,0
  668. #HP,T,R,18,14,4,0
  669. #ES,13,14,23,14,14,0
  670. #HP,T,R,20,14,4,0
  671. #HH,13,14,23,1,4,0
  672. #HP,T,R,23,14,4,0
  673.  
  674. #ES,13,14,23,14,4,0
  675.  
  676. #HP,T,R,15,14,4,0
  677. #HH,13,14,23,1,4,0
  678. #HP,T,R,19,14,4,0
  679. #ES,13,14,23,14,14,0
  680. #HP,T,R,20,14,4,0
  681. #HH,13,14,23,1,4,0
  682. #HP,T,R,23,14,4,0
  683.  
  684. #ES,30,14,38,14,4,0
  685.  
  686. #HP,T,R,30,14,4,0
  687. #HH,30,14,38,1,4,0
  688. #HP,T,R,33,14,4,0
  689.  
  690. #ES,30,14,38,14,4,0
  691.  
  692. #HP,T,R,35,14,4,0
  693. #HH,30,14,38,1,4,0
  694. #HP,T,R,38,14,4,0
  695.  
  696. #HP,T,R,45,14,4,0
  697. #HH,45,14,61,1,4,0
  698. #HP,T,R,50,14,4,0
  699.  
  700. #ES,45,14,61,14,4,0
  701.  
  702. #HP,T,R,51,14,4,0
  703. #HH,45,14,61,1,4,0
  704. #HP,T,R,61,14,4,0
  705. #D1
  706.  
  707. #HP,T,R,1,14,4,0
  708. #HP,T,R,13,14,4,0
  709. #HH,13,14,23,1,4,0
  710. #HP,T,R,18,14,4,0
  711. #ES,13,14,23,14,14,0
  712. #HP,T,R,20,14,4,0
  713. #HH,13,14,23,1,4,0
  714. #HP,T,R,23,14,4,0
  715.  
  716. #D1
  717. #HP,T,R,31,14,4,0
  718. #HH,30,14,38,1,4,0
  719. #HP,T,R,38,14,4,0
  720. #D1
  721. #HP,T,R,45,14,4,0
  722. #HH,45,14,61,1,4,0
  723. #HP,T,R,50,14,4,0
  724.  
  725. #ES,45,14,61,14,4,0
  726. #D1
  727. #HP,T,R,51,14,4,0
  728. #HH,45,14,61,1,4,0
  729. #HP,T,R,61,14,4,0
  730.  
  731. #ES,45,14,61,14,4,0
  732. #D1
  733. #HP,T,R,51,14,4,0
  734. #HH,45,14,61,1,4,0
  735. #HP,T,R,61,14,4,0
  736.  
  737. #ES,45,14,61,14,4,0
  738. #D1
  739. #HP,T,R,51,14,4,0
  740. #HH,45,14,61,1,4,0
  741. #HP,T,R,61,14,4,0
  742.  
  743. #ES,45,14,61,14,4,0
  744. #D1
  745. #HP,T,R,51,14,4,0
  746. #HH,45,14,61,1,4,0
  747. #HP,T,R,61,14,4,0
  748.  
  749. #ES,45,14,61,14,4,0
  750. #D1
  751. #HP,T,R,51,14,4,0
  752. #HH,45,14,61,1,4,0
  753. #HP,T,R,61,14,4,0
  754.  
  755. #ES,45,14,61,14,4,0
  756. #D1
  757. #HP,T,R,51,14,4,0
  758. #HH,45,14,61,1,4,0
  759. #HP,T,R,61,14,4,0
  760.  
  761.  
  762. #D1
  763. #WP
  764.  
  765. #ES,1,22,75,28,14,0
  766. #C16,R22
  767. ~b~W~ICLEAR TO SEND IS ACTIVATED IF REMOTE RTS IS OFF~N
  768. #D4
  769. #HP,T,L,61,11,3,0
  770. #HH,45,11,61,1,3,0
  771. #HP,T,L,58,11,3,0
  772. #ES,45,11,61,11,14,0
  773. #D1
  774. #HP,T,L,55,11,3,0
  775. #HH,45,11,61,1,3,0
  776. #HP,T,L,45,11,3,0
  777. #HP,T,L,61,11,3,0
  778. #HH,45,11,61,1,3,0
  779. #HP,T,L,58,11,3,0
  780. #ES,45,11,61,11,14,0
  781. #D1
  782. #HP,T,L,55,11,3,0
  783. #HH,45,11,61,1,3,0
  784. #HP,T,L,45,11,3,0
  785. #ES,45,11,61,11,14,0
  786. #D1
  787. #HP,T,L,61,11,3,0
  788. #HH,45,11,61,1,3,0
  789. #HP,T,L,58,11,3,0
  790. #ES,45,11,61,11,14,0
  791. #D1
  792. #HP,T,L,55,11,3,0
  793. #HH,45,11,61,1,3,0
  794. #HP,T,L,45,11,3,0
  795.  
  796. #HP,T,L,61,11,3,0
  797. #HH,45,11,61,1,3,0
  798. #HP,T,L,58,11,3,0
  799. #ES,45,11,61,11,14,0
  800. #HP,T,L,55,11,3,0
  801. #HH,45,11,61,1,3,0
  802. #HP,T,L,45,11,3,0
  803. #HP,T,L,61,11,3,0
  804. #HH,45,11,61,1,3,0
  805. #HP,T,L,58,11,3,0
  806. #ES,45,11,61,11,14,0
  807. #D1
  808. #HP,T,L,55,11,3,0
  809. #HH,45,11,61,1,3,0
  810. #HP,T,L,45,11,3,0
  811. #HP,T,L,61,11,3,0
  812. #HH,45,11,61,1,3,0
  813. #HP,T,L,58,11,3,0
  814. #ES,45,11,61,11,14,0
  815. #D1
  816. #HP,T,L,55,11,3,0
  817. #HH,45,11,61,1,3,0
  818. #HP,T,L,45,11,3,0
  819. #ES,45,11,61,11,14,0
  820. #HP,T,L,61,11,3,0
  821. #HH,45,11,61,1,3,0
  822. #HP,T,L,58,11,3,0
  823. #ES,45,11,61,11,14,0
  824. #HP,T,L,55,11,3,0
  825. #HH,45,11,61,1,3,0
  826. #HP,T,L,45,11,3,0
  827. #HP,T,L,61,11,3,0
  828. #HH,45,11,61,1,3,0
  829. #HP,T,L,58,11,3,0
  830. #ES,45,11,61,11,14,0
  831. #HP,T,L,55,11,3,0
  832. #HH,45,11,61,1,3,0
  833. #HP,T,L,45,11,3,0
  834. #HP,T,L,61,11,3,0
  835. #HH,45,11,61,1,3,0
  836. #HP,T,L,58,11,3,0
  837. #ES,45,11,61,11,14,0
  838. #D1
  839. #HP,T,L,55,11,3,0
  840. #HH,45,11,61,1,3,0
  841. #HP,T,L,45,11,3,0
  842.  
  843. #HP,T,L,61,11,3,0
  844. #HH,45,11,61,1,3,0
  845. #HP,T,L,58,11,3,0
  846. #ES,45,11,61,11,14,0
  847. #HP,T,L,55,11,3,0
  848. #HH,45,11,61,1,3,0
  849. #HP,T,L,45,11,3,0
  850. #D1
  851. #HP,T,L,61,11,3,0
  852. #HH,45,11,61,1,3,0
  853. #HP,T,L,58,11,3,0
  854. #ES,45,11,61,11,14,0
  855. #D1
  856. #HP,T,L,55,11,3,0
  857. #HH,45,11,61,1,3,0
  858. #HP,T,L,45,11,3,0
  859. #HP,T,L,61,11,3,0
  860. #HH,45,11,61,1,3,0
  861. #HP,T,L,58,11,3,0
  862. #ES,45,11,61,11,14,0
  863. #D1
  864. #HP,T,L,55,11,3,0
  865. #HH,45,11,61,1,3,0
  866. #HP,T,L,45,11,3,0
  867. #HP,T,L,61,11,3,0
  868. #HH,45,11,61,1,3,0
  869. #HP,T,L,58,11,3,0
  870. #ES,45,11,61,11,14,0
  871. #D1
  872. #HP,T,L,55,11,3,0
  873. #HH,45,11,61,1,3,0
  874. #HP,T,L,45,11,3,0
  875. #HP,T,L,61,11,3,0
  876. #HH,45,11,61,1,3,0
  877. #HP,T,L,58,11,3,0
  878. #ES,45,11,61,11,14,0
  879. #D1
  880. #HP,T,L,55,11,3,0
  881. #HH,45,11,61,1,3,0
  882. #HP,T,L,45,11,3,0
  883. #ES,45,11,61,11,14,0
  884. #D1
  885. #HP,T,L,61,11,3,0
  886. #HH,45,11,61,1,3,0
  887. #HP,T,L,58,11,3,0
  888. #ES,45,11,61,11,14,0
  889. #D1
  890. #HP,T,L,55,11,3,0
  891. #HH,45,11,61,1,3,0
  892. #HP,T,L,45,11,3,0
  893.  
  894. #HP,T,L,61,11,3,0
  895. #HH,45,11,61,1,3,0
  896. #HP,T,L,58,11,3,0
  897. #ES,45,11,61,11,14,0
  898. #HP,T,L,55,11,3,0
  899. #HH,45,11,61,1,3,0
  900. #HP,T,L,45,11,3,0
  901. #HP,T,L,61,11,3,0
  902. #HH,45,11,61,1,3,0
  903. #HP,T,L,58,11,3,0
  904. #ES,45,11,61,11,14,0
  905. #D1
  906. #HP,T,L,55,11,3,0
  907. #HH,45,11,61,1,3,0
  908. #HP,T,L,45,11,3,0
  909. #HP,T,L,61,11,3,0
  910. #HH,45,11,61,1,3,0
  911. #HP,T,L,58,11,3,0
  912. #ES,45,11,61,11,14,0
  913. #D1
  914. #HP,T,L,55,11,3,0
  915. #HH,45,11,61,1,3,0
  916. #HP,T,L,45,11,3,0
  917. #ES,45,11,61,11,14,0
  918. #HP,T,L,61,11,3,0
  919. #HH,45,11,61,1,3,0
  920. #HP,T,L,58,11,3,0
  921. #ES,45,11,61,11,14,0
  922. #HP,T,L,55,11,3,0
  923. #HH,45,11,61,1,3,0
  924. #HP,T,L,45,11,3,0
  925. #HP,T,L,61,11,3,0
  926. #HH,45,11,61,1,3,0
  927. #HP,T,L,58,11,3,0
  928. #ES,45,11,61,11,14,0
  929. #HP,T,L,55,11,3,0
  930. #HH,45,11,61,1,3,0
  931. #HP,T,L,45,11,3,0
  932. #HP,T,L,61,11,3,0
  933. #HH,45,11,61,1,3,0
  934. #HP,T,L,58,11,3,0
  935. #ES,45,11,61,11,14,0
  936. #D1
  937. #HP,T,L,55,11,3,0
  938. #HH,45,11,61,1,3,0
  939. #HP,T,L,45,11,3,0
  940.  
  941. #HP,T,L,61,11,3,0
  942. #HH,45,11,61,1,3,0
  943. #HP,T,L,58,11,3,0
  944. #ES,45,11,61,11,14,0
  945. #HP,T,L,55,11,3,0
  946. #HH,45,11,61,1,3,0
  947. #HP,T,L,45,11,3,0
  948. #D1
  949. #HP,T,L,61,11,3,0
  950. #HH,45,11,61,1,3,0
  951. #HP,T,L,58,11,3,0
  952. #ES,45,11,61,11,14,0
  953. #D1
  954. #HP,T,L,55,11,3,0
  955. #HH,45,11,61,1,3,0
  956. #HP,T,L,45,11,3,0
  957. #HP,T,L,61,11,3,0
  958. #HH,45,11,61,1,3,0
  959. #HP,T,L,58,11,3,0
  960. #ES,45,11,61,11,14,0
  961. #D1
  962. #HP,T,L,55,11,3,0
  963. #HH,45,11,61,1,3,0
  964. #HP,T,L,45,11,3,0
  965.  
  966. #ES,30,14,38,14,14,0
  967. #HP,T,L,36,14,3,0
  968. #HH,30,14,38,1,3,0
  969. #HP,T,L,35,14,3,0
  970. #ES,30,14,38,14,14,0
  971. #D1
  972. #HP,T,L,34,14,3,0
  973. #HH,30,14,38,1,3,0
  974. #HP,T,L,30,14,3,0
  975. #D1
  976. #ES,30,14,38,14,14,0
  977. #HP,T,L,36,14,3,0
  978. #HH,30,14,38,1,3,0
  979. #HP,T,L,35,14,3,0
  980. #ES,30,14,38,14,14,0
  981. #D1
  982. #HP,T,L,34,14,3,0
  983. #HH,30,14,38,1,3,0
  984. #HP,T,L,30,14,3,0
  985.  
  986.  
  987. #D1
  988. #ES,45,11,61,11,14,0
  989. #ES,30,14,38,14,14,0
  990.  
  991. #HP,T,R,38,14,12,0
  992. #HH,30,14,38,1,12,0
  993. #HP,T,L,30,14,12,0
  994.  
  995.  
  996. #HP,T,R,1,11,4,0
  997. #HP,T,L,22,11,3,0
  998. #HH,13,11,23,1,3,0
  999. #HP,T,L,17,11,3,0
  1000. #ES,13,11,23,11,14,0
  1001. #D1
  1002. #HP,T,L,16,11,3,0
  1003. #HH,13,11,23,1,3,0
  1004. #HP,T,L,13,11,3,0
  1005. #ES,13,11,23,11,14,0
  1006. #D1
  1007. #HP,T,L,22,11,3,0
  1008. #HH,13,11,23,1,3,0
  1009. #HP,T,L,13,11,3,0
  1010. #D1
  1011. #HP,T,L,22,11,3,0
  1012. #HH,13,11,23,1,3,0
  1013. #HP,T,L,17,11,3,0
  1014.  
  1015. #ES,13,11,23,11,14,0
  1016.  
  1017. #ES,30,14,38,14,14,0
  1018. #D1
  1019. #HP,T,R,38,14,12,0
  1020. #HH,30,14,38,1,12,0
  1021. #HP,T,L,30,14,12,0
  1022.  
  1023. #HP,T,L,16,11,3,0
  1024. #HH,13,11,23,1,3,0
  1025. #HP,T,L,13,11,3,0
  1026. #ES,13,11,23,11,14,0
  1027. #D1
  1028. #HP,T,L,22,11,3,0
  1029. #HH,13,11,23,1,3,0
  1030. #HP,T,L,13,11,3,0
  1031. #D1
  1032. #HP,T,L,22,11,3,0
  1033. #HH,13,11,23,1,3,0
  1034. #HP,T,L,17,11,3,0
  1035.  
  1036. #ES,13,11,23,11,14,0
  1037.  
  1038. #HP,T,L,16,11,3,0
  1039. #HH,13,11,23,1,3,0
  1040. #HP,T,L,13,11,3,0
  1041. #ES,13,11,23,11,14,0
  1042. #D1
  1043. #HP,T,L,22,11,3,0
  1044. #HH,13,11,23,1,3,0
  1045. #HP,T,L,13,11,3,0
  1046.  
  1047. #D1
  1048. #HP,T,L,22,11,3,0
  1049. #HH,13,11,23,1,3,0
  1050. #HP,T,L,17,11,3,0
  1051.  
  1052. #ES,13,11,23,11,14,0
  1053.  
  1054. #HP,T,L,16,11,3,0
  1055. #HH,13,11,23,1,3,0
  1056. #HP,T,L,13,11,3,0
  1057. #ES,13,11,23,11,14,0
  1058.  
  1059. #HP,T,L,22,11,3,0
  1060. #HH,13,11,23,1,3,0
  1061. #HP,T,L,13,11,3,0
  1062.  
  1063. #ES,13,11,23,11,14,0
  1064.  
  1065. #HP,T,L,16,11,3,0
  1066. #HH,13,11,23,1,3,0
  1067. #HP,T,L,13,11,3,0
  1068. #ES,13,11,23,11,14,0
  1069.  
  1070. #HP,T,L,22,11,3,0
  1071. #HH,13,11,23,1,3,0
  1072. #HP,T,L,13,11,3,0
  1073.  
  1074.  
  1075. #D1
  1076. #WP
  1077.  
  1078.  
  1079. #ES,1,22,75,28,14,0
  1080. #C15,R22
  1081. ~b~W~ITERMINAL ACTIVATES TD AND DATA IS TRANSMITTED~N
  1082. #HP,T,R,1,8,4,0
  1083. #D3
  1084. #HP,T,R,15,8,11,0
  1085. #HH,13,8,23,1,11,0
  1086. #HP,T,R,17,8,11,0
  1087. #ES,13,8,23,8,14,0
  1088. #D1
  1089. #HP,T,R,19,8,11,0
  1090. #HH,13,8,23,1,11,0
  1091. #HP,T,R,23,8,11,0
  1092. #ES,13,8,23,8,14,0
  1093.  
  1094. #ES,30,14,38,14,14,0
  1095. #D1
  1096. #HP,T,R,31,14,11,0
  1097. #HH,30,14,38,1,11,0
  1098. #HP,T,R,38,14,11,0
  1099. #ES,30,14,38,14,14,0
  1100. #D1
  1101. #HP,T,R,31,14,12,0
  1102. #HH,30,14,38,1,12,0
  1103. #HP,T,R,38,14,12,0
  1104.  
  1105. #D1
  1106. #HP,T,R,14,8,11,0
  1107. #HH,13,8,23,1,11,0
  1108. #HP,T,R,16,8,11,0
  1109. #ES,13,8,23,8,14,0
  1110. #D1
  1111. #HP,T,R,20,8,11,0
  1112. #HH,13,8,23,1,11,0
  1113. #HP,T,R,23,8,11,0
  1114. #D1
  1115.  
  1116. #ES,30,14,38,14,14,0
  1117. #D1
  1118. #HP,T,R,31,14,11,0
  1119. #HH,30,14,38,1,11,0
  1120. #HP,T,R,38,14,11,0
  1121. #ES,30,14,38,14,14,0
  1122. #D1
  1123. #HP,T,R,31,14,12,0
  1124. #HH,30,14,38,1,12,0
  1125. #HP,T,R,38,14,12,0
  1126.  
  1127. #HP,T,R,45,9,11,0
  1128. #HH,45,9,61,1,11,0
  1129. #HP,T,R,59,9,11,0
  1130. #ES,45,9,61,9,14,0
  1131. #D1
  1132. #HP,T,R,47,9,11,0
  1133. #HH,45,9,61,1,11,0
  1134. #HP,T,R,61,9,11,0
  1135. #ES,13,8,23,8,14,0
  1136. #D1
  1137. #HP,T,R,20,8,11,0
  1138. #HH,13,8,23,1,11,0
  1139. #HP,T,R,23,8,11,0
  1140.  
  1141. #ES,13,8,23,8,14,0
  1142. #HP,T,R,13,8,11,0
  1143. #HH,13,8,23,1,11,0
  1144. #HP,T,R,17,8,11,0
  1145.  
  1146. #ES,13,8,23,8,14,0
  1147.  
  1148. #HP,T,R,18,8,11,0
  1149. #HH,13,8,23,1,11,0
  1150. #HP,T,R,23,8,11,0
  1151.  
  1152. #ES,30,14,38,14,14,0
  1153. #D1
  1154. #HP,T,R,31,14,11,0
  1155. #HH,30,14,38,1,11,0
  1156. #HP,T,R,38,14,11,0
  1157. #ES,30,14,38,14,14,0
  1158. #D1
  1159. #HP,T,R,31,14,12,0
  1160. #HH,30,14,38,1,12,0
  1161. #HP,T,R,38,14,12,0
  1162. #D1
  1163. #HP,T,R,45,9,11,0
  1164. #HH,45,9,61,1,11,0
  1165. #HP,T,R,50,9,11,0
  1166.  
  1167. #ES,45,9,61,9,14,0
  1168. #D1
  1169. #HP,T,R,55,9,11,0
  1170. #HH,45,9,61,1,11,0
  1171. #HP,T,R,61,9,11,0
  1172. #D1
  1173. #HP,T,R,45,9,11,0
  1174. #HH,45,9,61,1,11,0
  1175. #HP,T,R,50,9,11,0
  1176.  
  1177. #ES,45,9,61,9,14,0
  1178.  
  1179. #HP,T,R,55,9,11,0
  1180. #HH,45,9,61,1,11,0
  1181. #HP,T,R,61,9,11,0
  1182. #HP,T,L,73,9,4,0
  1183.  
  1184. #HP,T,R,13,8,11,0
  1185. #HH,13,8,23,1,11,0
  1186. #HP,T,R,15,8,11,0
  1187. #ES,13,8,23,8,14,0
  1188. #HP,T,R,19,8,11,0
  1189. #HH,13,8,23,1,11,0
  1190. #HP,T,R,23,8,11,0
  1191.  
  1192. #ES,13,8,23,8,14,0
  1193.  
  1194. #HP,T,R,14,8,11,0
  1195. #HH,13,8,23,1,11,0
  1196. #HP,T,R,16,8,11,0
  1197. #ES,13,8,23,8,14,0
  1198. #HP,T,R,20,8,11,0
  1199. #HH,13,8,23,1,11,0
  1200. #HP,T,R,23,8,11,0
  1201. #ES,13,8,23,8,14,0
  1202. #HP,T,R,20,8,11,0
  1203. #HH,13,8,23,1,11,0
  1204. #D1
  1205. #HP,T,R,23,8,11,0
  1206. #ES,13,8,23,8,14,0
  1207. #HP,T,R,14,8,11,0
  1208. #HH,13,8,23,1,11,0
  1209. #HP,T,R,23,8,11,0
  1210. #ES,13,8,23,8,14,0
  1211. #HP,T,R,20,8,11,0
  1212. #HH,13,8,23,1,11,0
  1213. #HP,T,R,23,8,11,0
  1214. #ES,13,8,23,8,14,0
  1215. #HP,T,R,20,8,11,0
  1216. #HH,13,8,23,1,11,0
  1217. #HP,T,R,23,8,11,0
  1218. #D1
  1219. #ES,30,14,38,14,11,0
  1220. #HP,T,R,31,14,11,0
  1221. #HH,30,14,38,1,11,0
  1222. #HP,T,R,36,14,11,0
  1223. #ES,30,14,38,14,14,0
  1224. #D1
  1225. #HP,T,R,33,14,12,0
  1226. #HH,30,14,38,1,12,0
  1227. #HP,T,R,38,14,12,0
  1228. #D1
  1229. #ES,30,14,38,14,11,0
  1230. #HP,T,R,31,14,11,0
  1231. #HH,30,14,38,1,11,0
  1232. #HP,T,R,36,14,11,0
  1233. #ES,30,14,38,14,14,0
  1234. #D1
  1235. #HP,T,R,33,14,12,0
  1236. #HH,30,14,38,1,12,0
  1237. #HP,T,R,38,14,12,0
  1238.  
  1239. #ES,30,14,38,14,11,0
  1240. #HP,T,R,31,14,11,0
  1241. #HH,30,14,38,1,11,0
  1242. #HP,T,R,36,14,11,0
  1243. #ES,30,14,38,14,14,0
  1244. #D1
  1245. #HP,T,R,33,14,12,0
  1246. #HH,30,14,38,1,12,0
  1247. #HP,T,R,38,14,12,0
  1248. #D1
  1249. #ES,30,14,38,14,11,0
  1250. #HP,T,R,31,14,11,0
  1251. #HH,30,14,38,1,11,0
  1252. #HP,T,R,36,14,11,0
  1253. #ES,30,14,38,14,14,0
  1254. #D1
  1255. #HP,T,R,33,14,12,0
  1256. #HH,30,14,38,1,12,0
  1257. #HP,T,R,38,14,12,0
  1258. #D1
  1259.  
  1260. #HP,T,R,45,9,11,0
  1261. #HH,45,9,61,1,11,0
  1262. #HP,T,R,54,9,11,0
  1263.  
  1264. #ES,45,9,61,9,14,0
  1265.  
  1266. #HP,T,R,56,9,11,0
  1267. #HH,45,9,61,1,11,0
  1268. #HP,T,R,61,9,11,0
  1269.  
  1270. #D1
  1271. #HP,T,R,13,8,11,0
  1272. #HH,13,8,23,1,11,0
  1273. #HP,T,R,16,8,11,0
  1274.  
  1275. #ES,13,8,23,8,14,0
  1276.  
  1277. #HP,T,R,18,8,11,0
  1278. #HH,13,8,23,1,11,0
  1279. #HP,T,R,23,8,11,0
  1280.  
  1281. #D1
  1282. #HP,T,R,45,9,11,0
  1283. #HH,45,9,61,1,11,0
  1284. #HP,T,R,50,9,11,0
  1285.  
  1286. #ES,45,9,61,9,14,0
  1287. #HP,T,R,55,9,11,0
  1288. #HH,45,9,61,1,11,0
  1289. #HP,T,R,61,9,11,0
  1290.  
  1291. #ES,30,14,38,14,12,0
  1292. #HH,30,14,38,1,12,0
  1293.  
  1294. #HH,33,14,34,1,12,0
  1295. #HP,T,R,34,14,12,0
  1296.  
  1297. #ES,45,9,61,9,14,0
  1298.  
  1299. #HP,T,R,55,9,11,0
  1300. #HH,45,9,61,1,11,0
  1301. #ES,45,9,61,9,14,0
  1302. #D1
  1303. #HP,T,R,61,9,11,0
  1304. #HH,45,9,61,1,11,0
  1305. #HP,T,R,55,9,11,0
  1306. #HH,45,9,61,1,11,0
  1307. #HP,T,R,61,9,11,0
  1308.  
  1309. #ES,30,14,38,14,12,0
  1310. #HH,30,14,38,1,12,0
  1311. #HH,35,14,36,1,12,0
  1312. #HP,T,R,36,14,12,0
  1313.  
  1314. #ES,45,9,61,9,14,0
  1315.  
  1316. #HP,T,R,55,9,11,0
  1317. #HH,45,9,61,1,11,0
  1318. #HP,T,R,60,9,11,0
  1319. #ES,45,9,61,9,14,0
  1320. #HP,T,R,50,9,11,0
  1321. #HH,45,9,61,1,11,0
  1322. #HP,T,R,61,9,11,0
  1323.  
  1324. #ES,30,14,38,14,12,0
  1325. #HH,30,14,38,1,12,0
  1326.  
  1327. #HH,36,14,37,1,11,0
  1328. #HP,T,R,37,14,11,0
  1329.  
  1330. #D1
  1331. #HP,T,R,13,8,11,0
  1332. #HH,13,8,23,1,11,0
  1333. #HP,T,R,16,8,11,0
  1334.  
  1335. #ES,13,8,23,8,14,0
  1336.  
  1337. #HP,T,R,18,8,11,0
  1338. #HH,13,8,23,1,11,0
  1339. #HP,T,R,23,8,11,0
  1340.  
  1341. #D1
  1342. #HP,T,R,45,9,11,0
  1343. #HH,45,9,61,1,11,0
  1344. #HP,T,R,50,9,11,0
  1345.  
  1346. #ES,45,9,61,9,14,0
  1347. #HP,T,R,55,9,11,0
  1348. #HH,45,9,61,1,11,0
  1349. #HP,T,R,61,9,11,0
  1350.  
  1351. #ES,30,14,38,14,12,0
  1352. #HH,30,14,38,1,12,0
  1353.  
  1354. #HH,33,14,34,1,12,0
  1355. #HP,T,R,34,14,12,0
  1356.  
  1357. #ES,45,9,61,9,14,0
  1358.  
  1359. #HP,T,R,55,9,11,0
  1360. #HH,45,9,61,1,11,0
  1361. #ES,45,9,61,9,14,0
  1362. #D1
  1363. #HP,T,R,61,9,11,0
  1364. #HH,45,9,61,1,11,0
  1365. #HP,T,R,55,9,11,0
  1366. #HH,45,9,61,1,11,0
  1367. #HP,T,R,61,9,11,0
  1368.  
  1369. #ES,30,14,38,14,12,0
  1370. #HH,30,14,38,1,12,0
  1371. #HH,30,14,33,1,11,0
  1372. #HP,T,R,33,14,11,0
  1373.  
  1374. #ES,30,14,38,14,12,0
  1375. #HH,30,14,33,1,12,0
  1376. #HH,35,14,36,1,12,0
  1377. #HP,T,R,35,14,12,0
  1378.  
  1379. #ES,30,14,38,14,12,0
  1380. #HH,30,14,38,1,12,0
  1381.  
  1382. #HH,36,14,37,1,11,0
  1383. #HP,T,R,37,14,11,0
  1384.  
  1385. #ES,45,9,61,9,14,0
  1386.  
  1387. #HP,T,R,55,9,11,0
  1388. #HH,45,9,61,1,11,0
  1389. #HP,T,R,60,9,11,0
  1390. #ES,45,9,61,9,14,0
  1391. #HP,T,R,50,9,11,0
  1392. #HH,45,9,61,1,11,0
  1393. #HP,T,R,61,9,11,0
  1394.  
  1395. #ES,30,14,38,14,12,0
  1396. #HH,30,14,38,1,12,0
  1397.  
  1398. #HH,36,14,37,1,11,0
  1399. #HP,T,R,37,14,11,0
  1400.  
  1401. #HP,T,L,73,9,4,0
  1402. #SK,S,2
  1403. #D1
  1404.  
  1405. #WN
  1406.  
  1407. #SK,R,R,2
  1408. #BO,17,8,69,14,1,1,1,3,14,0
  1409. THAT WAS RS-232 HANDSHAKE PROTOCOL !!!
  1410.  
  1411. PAGEBACK IF YOU NEED TO SEE IT AGAIN.
  1412. #W,P
  1413. %
  1414. #EF
  1415. #T
  1416. #C4,R5
  1417. ~z~Y~IDetailed RS-232 Protocol Review~N
  1418. #HH,4,6,72,2,14,1
  1419.  
  1420.  
  1421. 1.~Y~I~r RTS (lead 4)~N is activated by the DTE.
  1422.  
  1423. 2. ~W~I~gDCD (lead 8)~N is checked by the modem to see if the far-end DTE has its
  1424.    RTS high.
  1425.  
  1426. 3. ~W~I~bIf the far end's RTS is high (DCD on), the modem does not give a CTS, and
  1427.    the DTE drops RTS and goes back to step 1.~N  ~H~FIf DTE is off, it proceeds to
  1428.    step 4.~N
  1429.  
  1430. 4. ~W~I~yIf DCD is off, the local modem (DCE), after a small delay, gives a CTS
  1431.    (lead 5) signal to the DTE.~N
  1432.  
  1433. 5. ~Y~I~cThe DTE then presents data on the transmitted data lead (lead 2), and the
  1434.    modem transmits this data to the far end.~N
  1435.  
  1436.  
  1437. #BO,17,8,69,14,1,1,1,5,0,7
  1438. THIS HAS BEEN AN INTERESTING CHAPTER
  1439.  
  1440. PLEASE TAKE A FEW MINUTES TO REVIEW
  1441.  
  1442. FOR YOUR RS-232 QUIZ.
  1443.  
  1444.  
  1445.  
  1446. #WN
  1447.  
  1448. %
  1449. #EF
  1450. #T
  1451. #C4,R5
  1452. ~z~Y~IRS-232 Sequence continued~N
  1453. #HH,4,6,72,2,14,1
  1454.  
  1455.  
  1456. 6. ~Y~I~yThe recieving modem puts the received data on lead 3 for presentation to
  1457.    the destination DTE.~N
  1458.  
  1459. 7. ~g~W~IThe originating DTE continues with RTS held high until all data are
  1460.    transmitted.  Then drops its RTS, which drops DCD at the far end and CTS
  1461.    locally, causing the line to be idle once again.~N
  1462.  
  1463. 8. ~W~I~zEither DTE can now raise RTS to obtain control of the line.~N
  1464.  
  1465.  
  1466. #WP
  1467.  
  1468. #SK,R,R,2
  1469. #BO,17,8,69,14,1,1,1,5,15,1
  1470. PLEASE REVIEW THE RS232 CHART.
  1471.  
  1472. SOME OF THE QUESTIONS IN PART1
  1473.  
  1474. AND PART2 ARE FROM THIS SCREEN.
  1475.  
  1476. #WP
  1477.  
  1478. #QT,Q,RS232-2
  1479. #WP
  1480. #QT,T,RS232-2
  1481. #WP
  1482.  
  1483. #BO,17,7,69,22,1,1,1,14,15,4
  1484. AT THIS POINT YOU SHOULD NO LONGER
  1485. BE AFRAID OF YOUR MODEM !!
  1486.  
  1487.  
  1488. THE NEXT CHAPTER WILL DISCUSS TROUBLESHOOTING
  1489. TECHNIQUES FOR:
  1490.  
  1491. *        HAYES "AT" COMMAND SET      *
  1492.  
  1493. *        MODEMS NOT DAILING          *
  1494.  
  1495. *        MODEMS NOT RESPONDING       *
  1496.  
  1497. *        OTHER PROBLEMS              *
  1498.  
  1499.  
  1500.  
  1501. #WN
  1502. #EF
  1503. #SK,R,R,3
  1504. #VNOTFREE.VOI
  1505. #WP,N
  1506. T15,1,*** PC & MODEM COMMUNICATIONS TUTOR  Ver 1.2 ***
  1507. #EF
  1508. #SK,R,R,1
  1509. #BO,17,13,55,15,8,1,1,1,15,4
  1510. THANK YOU FOR YOUR SUPPORT
  1511. #X
  1512.  
  1513.