Omron CJ2 CPU UNIT - CJ1 W-CIF11 RS-422 A Converter; DIP Switch Settings; Electric Specifications; RS-232 C Connector

Appendices
A-114
CJ2 CPU Unit Hardware User’s Manual
CJ1W-CIF11 RS-422A Converter
The CJ1W-CIF11 RS-422A Converter is used to convert RS-232C to RS-422A/485.
It is connected directly to the RS-232C port on a CJ2 CPU Unit.
It is not isolated, so the maximum distance for RS-422A/485 is 50 m.
Appearance
Electric Specifications
• RS-422A/485 Terminal Block
• RS-232C Connector
* The hood will have the same electric potential as the connector hood where it is connected.
DIP Switch Settings
*1 Set both pins 2 and 3 to either ON (2-wire) or OFF (4-wire).
*2 To disable the echo-back function, set pin 5 to ON (RS control enabled).
*3 When connecting to a device on the N side in a 1: N connection with the 4-wire method, set pin 6 to ON (RS
control enabled).
Also, when connecting by the 2-wire method, set pin 6 to ON (RS control enabled).
Signal name
RDA−
RDB+
SDA−
SDB+
FG
Pin No.
Signal
name
1FG
2RD
3SD
4CS
5RS
6+5 V
7, 8 NC
9SG (0 V)
Hood NC*
Pin No. Setting ON OFF
1 Terminating resistance set-
ting
Connects terminating resistance on
both ends of the transmission path.
Disconnects terminating
resistance.
2
2-wire/4-wire setting
*1
2-wire 4-wire
3
2-wire/4-wire setting
*1
2-wire 4-wire
4 Not used. --- ---
5
RS control selection for RD
*2
RS control enabled RS control disabled (Data
always received.)
6
RS control selection for SD
*3
RS control enabled RS control disabled (Data
always sent.)
RDA− RDB+ SDA− SDB+ FG
RDA− RDB+ SDA− SDB+ FG
RS-232C port
+5V 6
−7
−8
SG (0 V) 9
1 FG
2 RD
3 SD
4 CS
5 RS
Connector pin
arrangement