COM ports define
The communication port COM1 of PV037/PV057/PV058 can use as RS232C、RS422
and RS485 while COM2 as RS422 and RS485. The COM2 of PV057/PV058/GD058
can use as RS232, RS422 and RS485. Please make the right connecting cable
according to the specifications. About the cable connecting figures of the HMI to other
P.L.C., please refer to the P.L.C. manuals.
Communication port COM1 in HMI is a DB-9P Female.
COM1： pin definitions
Pin Function Pin Function
1 RS-422 TX+ and RS-485 + 6 RS-422 TX- and RS-485 -
2 RS-232 RXD 7 RS-232 RTS
3 RS-232 TXD 8 RS-232 CTS
4 RS-422 RX+ 9 RS-422 RX-
5 Signal ground
COM2： 4-pin terminal.
RS422 and RS485。
COM2： pin definitions (Only PV057/PV058 series support is a DB-9P male)
Pin Function Pin Function
1 RS-485 + 6 RS-485 -
2 RS-232 RXD 7 RS-232 RTS
3 RS-232 TXD 8 RS-232 CTS
4 9 Optional 5V output
5 Signal ground
COM2： pin definitions (Only GD057/GD058 series support is a DB-25P female)
Pin Function Pin Function
1 Chassis ground 14 RS-422 TXD+ and RS-485 +
2 RS-232 TXD 15 RS-422 TXD- and RS-485 -
3 RS-232 RXD 16 RS-422 RXD+
4 RS-232 RTS 17 RS-422 RXD-
5 RS-232 CTS 18 (no function)
6 (no function) 19 (no function)
7 Signal ground 20 (no function)
8* (no function) 21
9 (no function) 22
10 (no function) 23 RS-422 RTS+
11 (no function) 24 RS-422 RTS-
12 RS-422 CTS+ 25* (no function)
13 RS-422 CTS-
Extension Bus Port (It’s an Optional device) this port can link with other extension
modules for advanced functions.
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