LSIS Master-K K200S - 14.5 Pin-out of RS-422;485

Chapter 14 RS-422/485C function of K200S MASTER-K
14-3
14.5 Pin-out of RS-422/485
The K200S B type CPU has 5-pin connector for RS-422/485 interface. The following table
shows functions of each pin and connection with external device.
1) RS-422 network
Pin
number
CPU Signal direction External device
1 RDA + (receive signal) SDA + (send signal)
2 RDB – (receive signal) SDA – (send signal)
3 SDA + (send signal) RDA + (receive signal)
4 SDA – (send signal) RDB – (receive signal)
5 S.G (signal ground) S.G (signal ground)
2) RS-485 network
Pin
number
CPU Signal direction External device
1 RDA + (receive signal)
2 RDB – (receive signal)
RS-485 +
3 SDA + (send signal)
4 SDA – (send signal)
RS-485 –
5 S.G (signal ground) S.G (signal ground)