The following table provides detailed information about the Modbus/TCP Settings Configuration page options. You can refer to Configuring Modbus/TCP Settings for configuration procedures.
If you want detailed information about the IO-Link Master to Modbus/TCP interface, see the IO-Link Master Modbus/TCP Reference Manual.
Options |
Modbus/TCP Configuration Descriptions |
ISDU Data Settings |
|
ISDU Response Timeout (1-10000) (Default = 20 seconds) |
The time that the IO-Link Master’s Modbus/TCP interface waits for a response to an ISDU request. The timeout needs to set long enough to allow all commands within the ISDU request to be processed. |
Process Data Settings |
|
PDI Data Block Size (To PLC) (Default: 36-bytes) |
This is the configurable PDI data block length. Optional lengths are:
|
PDI Byte-Swap Method (Default: No byte swap) |
If enabled, the IO-Link Master swaps the data bytes in word (2 byte) format or dword (4 byte) format. Options include:
|
PDO Data Block Size (From PLC) (Default: 32-bytes) |
This is the configurable PDO data block length. Optional lengths that do not include the event code are:
Optional lengths that include the event code are:
|
PDO Byte-Swap Method (Default: No byte-swap) |
If enabled, the IO-Link Master swaps the data bytes in word (2 byte) format or dword (4 byte) format. Options include:
|
Append PDO to PDI Data (Default: False) |
If selected, the IO-Link Master appends any PDO data to the end of the PDI data.
|
Clear Event Code In PDO Block (Default: False) |
If enabled, the IO-Link Master expects the first word of the PDO block to be used for event code handling. Valid values are:
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Clear Event Code After Hold Time (Default: True) |
If enabled, the IO-Link Master will clear any event code reported in the PDI data block after the Event Active Hold Time. Valid values are:
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Active Event Hold Time (1-65535) (Default: 1000ms) |
If Clear Event Code After Hold time is enabled, the time period an event code is reported in the PDI block before it is cleared. Valid units are:
|
Clear Event Hold Time (1-65535) (Default: 500ms) |
Once an event code clears, the time an event code stays cleared in the PDI block before another event code is reported. Valid units are:
|
Transfer Mode Settings |
|
Slave Mode Device ID (1-247) (Default: 1) |
The Modbus Device ID used to access this IO-Link port. |
PDI Receive Mode(s) (To PLC) (Default: Slave) |
This determines which PDI Receive (To PLC) Modes are enabled. Selectable modes are:
Note: Not selecting Slave mode disables Modbus/TCP access to the PDI data block. |
PDO Transmit Mode(s) (From PLC) (Default: Slave) |
Selectable modes are:
|