Flexitron Webdyn WebdynModbus - Page 43

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43
Example:
Denition of a Modbus slave handling 4 pulse counters, 4 outputs and 4 inputs.
Declaration of Modbus requests:
REQUEST 1 REQUEST 2 REQUEST 3
index 1 2 3
name counter output input
readFunctionCode 3 (read holding
registers)
1 (read coils) 3 (read holding registers)
writeFunctionCode 0 5 (write single coil) 0
startRegister 0 4 8
size 4 4 4
enableReading 1 (enabled) 1 (enabled) 1 (enabled)
enableWriting 2 (disabled) 1 (enabled) 2 (disabled)
option1 Not supplied Not supplied Not supplied
option2 Not supplied Not supplied Not supplied
Modbus_RequestsTables={
1;counter;3;0;0;4;1;2
2;output;1;5;4;4;1;1
3; input;2;0;8;4;1;2
}
Declaration of variables:
VARIABLE 1 VARIABLE 2 ... VARIABLE 12
index 1 2 12