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The configurable Modbus I/O transfer options are summarized in the tables below.
Modbus TCP Configuration:
Enable Modbus TCP Server
(Slave)
Modbus Server Device ID
Enable Modbus TCP Client
(Master)
Modbus Client Scan Rate
Reset Registers on Comm's
Fail
Comms Fail Timeout
Modbus TCP Client Mappings:
Local Register
I/O Count
Function Code
Destination Register
Device ID
Server IP Address
Response Timeout
Comm Fail Register
59
Check this box to enable the onboard Modbus TCP Server. All Modbus
TCP connections to the module IP Address and specified Modbus
Server Device ID will be routed to the onboard I/O registers.
Specify the Modbus Device ID for the onboard Modbus TCP Server.
Allowed values are 0 to 255.
Check this box to enable the onboard Modbus TCP Client. I/O to be
transferred via the Modbus TCP client is specified with Modbus TCP
Client Mappings.
Enter the delay (in milliseconds) between execution of consecutive
Modbus TCP Client Mappings to the same Server.
When Enabled the value in any onboard I/O register will be reset to zero
if a valid Modbus transaction directed to/from the given register has not
been completed for longer than the Comms Fail Timeout.
The period of time after which onboard I/O registers will be reset if a
valid Modbus transaction directed at that register has not completed.
Enter the starting onboard I/O register number that the specified
Modbus Master transaction will transfer I/O to/from.
Specify the number of consecutive I/O register to be transferred for the
specified transaction.
Specify the Modbus Function Code for the transaction.
Enter the starting I/O register number in the destination device that the
specified Modbus Master transaction will transfer I/O to/from.
Enter the Modbus Device ID of the destination Modbus device
Specify the IP Address of the destination Modbus TCP Server for the
specified transaction.
Enter the timeout (in milliseconds) to wait for a response to the
specified transaction.
Enter the onboard I/O Register number to store the communication
status of the specified transaction. The Specified register will be set to 0
if communications is successful, 0xFFFF if there is no connection to the
specified server, or 0xFFxx where xx is the Modbus Exception Code
XYR400E Ethernet Modem
Version 1
5/1/08
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