Modbus/RTU polling data from PL260
Posted: 29/04/2016, 8:40
Hi,
I have a PL260 with a third party SCADA application running polling on the EXP1 port. Whenever I try to poll more than 20 registers the PLC does not respond healthily (4x0001 - 4x0020 works, 4x0001 - 4x0021 does not work - N.B. I'm not using VW0 aka 4x0000). I have tried 'Modbus Poll' as well and the same result occurs.
Is there a limitation for any reason, I didn't see anything in the user manual?
Regards
I have a PL260 with a third party SCADA application running polling on the EXP1 port. Whenever I try to poll more than 20 registers the PLC does not respond healthily (4x0001 - 4x0020 works, 4x0001 - 4x0021 does not work - N.B. I'm not using VW0 aka 4x0000). I have tried 'Modbus Poll' as well and the same result occurs.
Is there a limitation for any reason, I didn't see anything in the user manual?
Regards