The Industrial Raspberry Pi Forum

Hi!

I wonder how I could do a single write and read on holding registers.
If I use PiCtory Modbus Master Setup and define a register the read is done all the time.
Looks like it is done every second due to config in extended data setup.

I have a device where I need to write flash values via modbus, so I want to only perform one write and only want to perform reads at defined times.

Thanks Peter

Hi Peter, unfortunately you can only implement cyclic Modbus queries with PiCtory. Why don't you try this?
https://pymodbustcp.readthedocs.io/en/s ... sters.html#

Thanks!
This worked got it running.