Jazz20 modbus doesn't work with even or odd parity

[Martynas1]

Hello,

I tried to configure Modbus RTU network with few unitronics jazz plc, one of them was old JZ10 series controllers, and other was new JZ20 series controllers, the problem is that the new JZ20  doesn't transmit data when controller is configured to work in odd or even parity, then old series JZ10 controllers works fine with all parity types - none, odd and even. Is it a bug or I'm doing something wrong?

[Eyal Koren]

Hello,

I tried to configure Modbus RTU network with few unitronics jazz plc, one of them was old JZ10 series controllers, and other was new JZ20 series controllers, the problem is that the new JZ20  doesn't transmit data when controller is configured to work in odd or even parity, then old series JZ10 controllers works fine with all parity types - none, odd and even. Is it a bug or I'm doing something wrong?

Hi Martynas1

I tested modbus communication for both JZ10 and JZ20 and both can successfully communicate with the Modbus protocol for different parity bit settings.

Could you give some more information regarding this issue?