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1992-11-27
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Best Power Technology Fortress - Communication Port Pinouts
-----------------------------------------------------------------------
Fortress DB-9
Advanced Mode (default)
(setpoint 7 = 1,2,3, or 4)
1 = advanced mode at 1200 Baud (default)
2 = advanced mode at 2400 Baud
3 = advanced mode at 4800 Baud
4 = advanced mode at 9600 Baud
Pin Description
--- ---------------------------------------------------------------
1 Receive Data
2 Transmit Data
3 Inverter Normally Open Contact - Closes to indicate that
the UPS is on battery power.
4 Common - Signal ground for all interface signals and contacts.
5 Low Runtime Normally Open Contact - Closes to indicate that
runtime (battery reserve while in inverter) is low.
6 Inverter Normally Closed Contact - Opens to indicate that
the UPS is on battery power.
7 Remote Emergency Power Off - Short to ground to turn the UPS off.
Apply +12VDC to turn the UPS back on or connect to Pin 8.
8 Unregulated +24VDC Source. (Current limited to 10mA typical).
9 Chassis Ground
The "Advanced Mode" is the default mode. It provides true asyncronous
serial communications support for Best CheckUPS and CheckUPS/II.
The "Contacts" consist of open collector circuits capable of switching
up to a +40 VDC 50mA resisitive load.
The "RS232 Communications Port" connections are found on Pin 4 (signal
ground), Pin 1 (receive data), and Pin 2 (transmit data). This port is
configured as DCE operating at 1200 baud (selectable 1200, 4800, or
9600). Data is formated in 8 bit ASCII; 1 stop bit; full duplex; no parity.
This interface supports XON/XOFF. Hardware handshaking is not supported.
Refer to FTS501 for information regarding the Fortress Command Language.
Fortress Cable connections to a computer or terminal:
-----------------------------------------------------
Computer Fortress
DB-9 DB-9
DCE DCE
-------- -------
TD 2 <------------------------> 2
RD 3 <------------------------> 1
SG 5 <------------------------> 4
NC ------------------------> case
(NC not connected, acts as a single sided shield)
GND 1 <-----\
DCD 4 <-----|
DTR 6 <-----/
RTS 7 <-----\
CTS 8 <-----/
----------------------------------------------------
Computer Fortress
DB-25 DB-9
DTE DCE
-------- -------
TD 2 <------------------------> 1
RD 3 <------------------------> 2
SG 7 <------------------------> 4
NC ------------------------> case
(NC not connected, acts as a single sided shield)
RTS 4 <-----\
CTS 5 <-----/
DSR 6 <-----\
DCD 8 <-----|
DTR 20 <----/
----------------------------------------------------
Modem Fortress
DB-25 DB-9
DCE DCE
-------- -------
RD 3 <------------------------> 1
TD 2 <------------------------> 2
SG 7 <------------------------> 4
NC ------------------------> case
(NC not connected, acts as a single sided shield)
RTS 4 <-----\
CTS 5 <-----/
DSR 6 <-----\
DCD 8 <-----|
DTR 20 <----/
-----------------------------------------------------------------------
-----------------------------------------------------------------------
Fortress DB-9
Contact Mode
(setpoint 7 = 0)
Pin Description
--- ---------------------------------------------------------------
1 Shutdown - A +12VDC signal held for 5 seconds on this pin while
the UPS is on battery shuts doen the UPS 20 seconds later.
The UPS will restart after a 10-second delay once normal
input power is restored.
2 Inverter Status - Produces a +12VDC signal whenever the UPS
is on battery power.
3 Inverter Normally Open Contact - Closes to indicate that
the UPS is on battery power.
4 Common - Signal ground for all interface signals and contacts.
5 Low Runtime Normally Open Contact - Closes to indicate that
runtime (battery reserve while in inverter) is low.
6 Inverter Normally Closed Contact - Opens to indicate that
the UPS is on battery power.
7 Remote Emergency Power Off - Short to ground to turn the UPS off.
Apply +12VDC to turn the UPS back on or connect to Pin 8.
8 Unregulated +24VDC Source. (Current limited to 10mA typical).
9 Chassis Ground
The "Contacts" consist of open collector circuits capable of switching
up to a +40 VDC 50mA resisitive load. The "Contact Mode" must be selected
by setting "setpoint 7 = 0" on the front panel.
This mode is used with the following BEST interface kits:
3COM 3+Share - BIK013T
Banyan VINES - BIK010/011K
IBM AS/400 - BIK003A
LAN Manager/Server v2.0 - BIK009L
Lantastic v4.0 - BIK009L
Novell UPS.VAP and UPS.NLM - BIK004/005/006N
Prime 2350/2450 - BIK014P