SveinT

It is yes to all, but in my frustration last evening I tried som more variations, and now I have a sequense for the communication that functions. Not so saticfied with it, because I thougt I hade controll if each Modbus block was finished before next Modbus block was trigged. In the smal examples with Modbus RTU thei are using a manual trigg of an Modbus block, and the trigger bit is RSET on the end of the Modbus block. 180307b Vilja V700.vlp

This is a ladder wich is working fine on V570, and when I made a new program for the V700, I copied this. But it does not work on V700

Hello Have some projects with V570 PLC and communicating with IO's on Modbus RTU. The shifting of communication with different Modbus Nodes are done by change of value in an MI using Store Direct function. This works fine on V570, but building the same function in a V700 PLC don't work at all. Are there som bugs in the Store Direct function on V700? The screen dump is from the ladder of V570 that is working fine.

Thanks, have changed the ladder according to som of the examples, and are now communicating with Modbus TCP to an Victron Colour Control :-)

Trying to communicate with Victron Colour Control with Modbus TCP and a V700 PLC. The V700 is a Master, and the Victron is slave. Tried the communication with a Modbus Poll program now, and I get to communicate with the Victron. Seems like it is some spesial things with the V700 model. But now I tried so many different setups, that I'm lost :-) Anyone have som god examples for communicating with a Modbus slave on port 502?