Proface AGP3500 - 10.4 DIO HMI" User Manual
Page 51
ST3000 Series Hardware Manual
3-20
Serial Interface (COM2)
This interface is used to connect an RS-422/RS-485
*1
serial cable. A D-Sub 9-pin plug connector is used.
<ST unit side>
<Cable side>
*1
RS-485 is compliant with AST-3301B / AST-3301S with revision code "B" or later. For all other models,
all revisions support RS-485.
ST Connector
XM2C-0942-502LX <OMRON Co.>
Interfit Bracket
#4-40 inch screws are used.
Recommended Cable Connector
XM2D-0901 <OMRON Co.>
Recommended Cable Cover
XM2S-0913 <OMRON Co.>
Recommended Jack Screw
XM2Z-0073 <OMRON Co.>
Pin
Arrangement
Pin No.
RS-422/RS-485
*1
Signal Name
Direction
Meaning
1
RDA
Input
Receive Data A(+)
2
RDB
Input
Receive Data B(-)
3
SDA
Output
Send Data A(+)
4
ERA
Output
Data Terminal Ready A(+)
5
SG
-
Signal Ground
6
CSB
Input
Send Possible B(-)
7
SDB
Output
Send Data B(-)
8
CSA
Input
Send Possible A(+)
9
ERB
Output
Data Terminal Ready B(-)
Shell
FG
-
Frame Ground
(Common with SG)
SEE
9
6
5
1
(ST unit side)