Table of Contents
Advertisement
915U-2 Wireless I/O
Modbus TCP Mappings
Local Register
I/O Count
Function Code
Destination Register
Device ID
Server IP Address
Server Port
Response Timeout (ms)
Comm Fail Register
Modbus Client Scan
Rate
Page 107
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.
502 is the general Modbus TCP port number and used if
accessing the internal registers. Port 503 has been assigned
for the RS-232 port or to 504 for the RS-485 port.
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
Enter the delay (in milliseconds) between executions of
consecutive Modbus TCP Client Mappings to the same
Server.
Page 107
915U-2 Wireless I/O
Advertisement
Table of Contents
