Yokogawa Standalone MW100 - Manual (Page 278)

App-4
IM MW100-01E
2. Computed data from MATH channels A001 to A004 of the MW100 client are written to
communication input channels C001 to C004 of the MW100 server.
For WRITE (client writes data to the server)
Lower byte of communication input channel C001
MATH Channel Hold Register
Upper byte of communication input channel C001
Lower byte of communication input channel C002
Upper byte of communication input channel C002
Lower byte of communication input channel C004
Upper byte of communication input channel C004
40001
40002
40003
40004
40007
40008
A001
MW100 Server MW100 Client
A002
A004
Hold register numbers assigned to the communication input
channels starting from 40001 are specified on the MW100.
“Float-Little” is selected for the register data type because
the MATH channel data is received in the order lower byte, upper byte.
Client/Server Settings for READ
The screens in the explanations below were generated under firmware version R3.04.
Server-Side Settings
Server Settings
Set the MW100 server as the server device.
Turn on Action on the server
Turn the Modbus server action “ON.”
Application timeout setting
When set to Modbus server, the timeout value is fixed to 30 s
regardless of whether the check box is selected.
Enter the server port number
Enter the Modbus server port number. Use the default value
unless otherwise necessary. In the example, the default value
is “502.”
Client-Side Settings
Client Setteing 1
Set the MW100 client as the client device.
Select
The setting is applied on the client device.
Set according to network environment
● Cycle:
Select a cycle appropriate for the unit’s performance.
● Connection:
Disconnect when no response is received from the server.
● Connection Timeout:
Enter the time to wait before disconnecting.
● Wait Time:
Enter the time to wait between disconnection and sending
of commands.
Appendix 2 Setting Data Communication That Uses Modbus Protocol