Simple Modbus Lua Script
EcoStruxure Building Expert
Simple script to test Modbus function
In each of the samples, the following needs to be observed:
- The Modbus port is closed and opened with the port settings. The samples can be combined but the port is only set once.
- The settings for the Modbus RS485 port requires an address, in this instance 99 is used. This must be different from the slaves.
- The nnn.MOD1 must be left unchecked so that it is not enabled. This will allow the Lua script ModbusB to work.
- For added functionality the "Print" command is used. The "print" command provides added functionality indicating a successful read / write in the output window. If the result = 0 then the read / write is successful. Anything else is an error code. Contact Product Support. The value = is the value that is either read in or written dependant on the function used.
The following samples provide simple read / write functions.: