Omron CP1E-E14SDR-A User Manual page 267

Appendices
DIP Switch for Operation Settings
Pin
1 Terminating resistance selec-
tion
2
2-wire or 4-wire selection*
3
2-wire or 4-wire selection*
4 Not used.
5
RS control selection for RD*
6
RS control selection for SD*
*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 using 2-wire connections, set pin 6 to ON (RS control enabled).
Dimensions
5.8
NT-AL001 RS-232C/RS-422A Conversion Unit
The NT-AL001 RS-232C/RS-422A Conversion Unit is used to connect a device with RS-232C terminals
to a device with RS-422A terminals.
A cable is used to connect the built-in RS-232C port of the CP1E N/NA
The Conversion Unit is insulated, so the maximum distance for RS-422A is 500 m.
Appearance
A-46
Setting
Terminating resistance connected
(both ends of transmission path)
1 2-wire connections
1 2-wire connections
2 RS control enabled
3 RS control enabled
38.8 18.2
ON
Terminating resistance
not connected
4-wire connections
4-wire connections
−
RS control disabled
(Data always received.)
RS control disabled
(Data always sent.)
(S )-type CPU Unit.
CP1E CPU Unit Hardware User's Manual(W479)
OFF
−