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modbus_documentation.txt
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GRFICS Modbus Mapping
REMOTE MODBUS IO DEVICES
192.168.95.10 - feed 1
holding register 1 - valve position set point 0-65535, where 0 is closed and 65535 is open
input regiser 1 - valve position reading
input register 2 - flow rate through valve
192.168.95.11 - feed 2
holding register 1 - valve position set point
input regiser 1 - valve position reading
input register 2 - flow rate through valve
192.168.95.12 - purge valve
holding register 1 - valve position set point
input regiser 1 - valve position reading
input register 2 - flow rate through valve
192.168.95.13 - product valve
holding register 1 - valve position set point
input regiser 1 - valve position reading
input register 2 - flow rate through valve
192.168.95.14 - tank
input register 1 - pressure
input register 2 - level
192.168.95.15 - analyzer
input registers 1-3 composition of gases in reactor
The PLC polls all of the remote IO, uses the measurements for its control algorithm,
and reports scaled values back to the HMI (192.168.95.3) for display
192.168.95.2 - PLC
holding registers being polled by HMI
1044 - reactor pressure
1045 - reactor liquid level
1046 - feed 1 valve position
1047 - feed 1 flow rate
1048 - feed 2 valve position
1049 - feed 2 flow rate
1050 - purge valve position
1051 - purge flow rate
1052 - product valve position
1053 - product flow rate