16
COM0 & COM2
controller of RS232, but also can be used in HIM program downloading and
debugging.
Pin
Symbol
PLC [RS-485]
4
wire
PLC [RS-485]
2
wire
PLC
[RS-232]
PC [RS-232]
1
Rx-(A)
RS-485 Rx
RS485A
2
RxD_PLC
RS-232 Rx
3
TxD_PLC
RS-232 Tx
4
Tx-
RS-485 Tx
5
GND
Signal ground
6
Rx+(B)
RS-485 Rx
RS485B
7
RxD_PC
RS-232 Rx
8
TxD_PC
RS-232 Tx
9
Tx+
RS-485 Tx
Pin
Designations
COM1
Pin assignment of the 9-pin female, D-SUB, COM1. This port is used to connect
the EOP5
–104 series to controllers with RS-232/485/422 port.
Pin #
Symbol
PLC [RS-485]4 wire
PLC [RS-485]2 wire PLC [RS-232]
1
Rx-(A)
RS-485 Rx
RS485A
2
RxD_PLC
RS-232 Rx
3
TxD_PLC
RS-232 Tx
4
Tx-
RS-485 Tx
5
GND
Signal ground
6
Rx+(B)
RS-485 Rx
RS485B
7
CTS_PLC
Clear to send input
8
RTS_PLC
Ready to send output
9
Tx+
RS-485 Tx
2.3.2 Connection with PC
The COM0 port on the back of the case can be used to connect RS232/RS485/RS422 devices and
can also be used to connect with the programming interface and setting interface of a PC.
Connection
The port can be attached to PC via a dedicated cable (P/N: MT54-PC).
Port Function
Due to the reason of communication rate, the COM0 is only used for
configuration-download and parameter-setting, and it can not be used for indirect
online simulation.
