Comparison to V2

The following table shows the differences between V2 and V3 PLCs regarding the parameter set for serial interfaces:

V2 Parameter	Representation in V3	Remark
Run on config fault	Run on config fault	Exactly the same
RTS control	Flow control (partially)	Special modes which allow to use PLC as modem and mode implicitly setting RS-485 will not be taken over. Flow control settings will be limited and only support hardware, software or none.
Baudrate	Baudrate	For V3, the baudrate range will be 9600 to 115200. Low modes will not be supported due to lack of support in Linux. High rates were only realized in V2 to support field bus plug as well as CS31 field bus. Both protocols are not supported anymore in V3, so these baudrates won’t be available in V3. Approach: Only support most common baudrates
Parity	Parity (subset)	A500 V3 doesn’t allow to configure parity modes “mark” and “space”. This means, only “none”, “odd” and “even” are configurable.
Data Bits	Data Bits	Exactly the same
Stop Bits	Stop Bits	Exactly the same