Proface GP4600R - 12.1 Standard HMIs with Rear Mounting Options" - Manual (Page 5)

5
„ RS-485 Isolation Unit
The RS-485/RS-422 type.
D-Sub 9-pin socket connector's pin assignments are as follows.
The communication method is switched with a change switch.
• For Display side settings please refer to “Display side settings”.
• This unit can not be used for GP4000 Series.
‹RS-485
Pin Arrangement Pin #
RS-485
Signal Name Direction Meaning
1 TRMRX -
Termination
(Receive side: 100
Ω)
2
RDA / SDA
- -
3
Input /
Output Receive Data A(+) /
Send Data A (+)
4 NC - No connection
5 SG - Signal Ground
6 VCC - +5V ± 5% output 0.05A
*1
*1 The VCC output for Pin #6 is not protected against overcurrent. To prevent
damage or unit malfunctions, use only the rated current.
7
RDB / SDB
- -
8
Input /
Output Receive Data B(-) /
Send Data B(-)
9 TRMTX - Termination (Send side: 100
Ω)
Shell FG - Frame Ground
RS422
RS485
5
1
6
9