Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-E-G/A User Manual
Rev.
2.16
www.weidmuller.com
48
Modbus TCP Configuration on I/O Transfer Menu:
Enable Modbus TCP
Server (Slave)
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.
Modbus Server
Device ID
Specify the Modbus Device ID for the onboard Modbus TCP Server. Allowed
values are 0 to 255.
Enable Modbus TCP
Client (Master)
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.
Modbus Client Scan
Rate
Enter the delay (in milliseconds) between execution of consecutive Modbus
TCP Client Mappings to the same Server.
Reset Registers on
Comms Fail
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.
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.
Enable Modbus
Statistics
Enables the Modbus Diagnostic registers as shown in Section 4.9 - “Internal
diagnostics Modbus Registers” Disabling this option will free up the registers
and also slightly increase processing resources.
Log background
Noise
RSSI & BGND on Rx messages are made available in the diagnostic
registers (Section 4.9 - “Internal diagnostics Modbus Registers” for details.
For a Hex value of 5F5D the 5D byte = RSSI and the 5F byte = BGND
(Convert value from hex to decimal and add a “-“e.g. 5F = -95dB). Enabling
this option removes the Background Noise byte from these registers and so
only the RSSI value is made available.
Modbus TCP Client Mappings on I/O Transfer Menu:
Local Register
Enter the starting onboard I/O register number that the specified Modbus Master
transaction will transfer I/O to/from.
I/O Count
Specify the number of consecutive I/O register to be transferred for the specified
transaction.
Function Code
Specify the Modbus Function Code for the transaction.
Destination
Register
Enter the starting I/O register number in the destination device that the specified
Modbus Master transaction will transfer I/O to/from.
Device ID
Enter the Modbus Device ID of the destination Modbus device
Server IP Address
Specify the IP Address of the destination Modbus TCP Server for the specified
transaction.
Response Timeout
Enter the timeout (in milliseconds) to wait for a response to the specified
transaction.
Comm Fail
Register
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
