Proface GP4600R - 12.1 Standard HMIs with Rear Mounting Options" User 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