Same as last time - look at the image you posted...
Also, are you reading values close to each other in modbus?
If you are reading registers 240-241 AND registers 256-257 then I strongly recommend you read all registers from 240~257 in one MODBUS node and use the parser to pick out the values of interest. This has the following advantages....
- values are read at the same scan of the device (and are therefore consistent)
- reading 1 modbus poll of 28 items is faster than 2 modbus polls. This will only get worse with each additional single read/poll.
- Individual modbus comms lead to contention on the wire (and eventually timeouts - search the forum - covered many times)
