Application Example - Omron CP1E-E14SDR-A User Manual

DIP Switch Setting
The NT-AL001 RS-232C/RS-422A Conversion Unit has a DIP switch for setting RS-422A/485
communications conditions.
When connecting the Serial Communications Option Board, refer to the DIP switch settings shown
in the following table.
Pin
1 Not used. (Leave set to ON.)
2 Built-in terminating resistance setting
ON: Connects terminating resistance, OFF: Disconnects terminating resis-
tance
3 2/4-wire setting
2-wire: Set both pins to ON, 4-wire: Set both pins to OFF
4
5 Transmission mode setting*
Constant transmission: Set both pins to OFF.
6
Transmission performed when CS signal in RS-232C interface is at high level:
Set pin 5 to OFF and pin 6 to ON.
Transmission performed when CS signal in RS-232C interface is at low level:
Set pin 5 to ON and pin 6 to OFF.
* When connecting to a CP-series CPU Unit, turn OFF pin 5 and turn ON pin 6.

Application Example

CP1E N/NA (S)-type CPU Unit
Built-in RS-232C Port or RS-232C
Option Board
Pin Signal
2 SD
3 RD
4 RS
5 CS
6 +5V
7 DR*
8 ER*
9 SG
Hood FG
* DR and ER signals are not supported by the N
Note The following cables can be used for this connection.
It is recommended that one of these cables be used to connect the RS-232C port on the Option Board
to the NT-AL001 RS-232C/RS-422 Conversion Unit.
Length
70cm
2m
CP1E CPU Unit Hardware User's Manual(W479)
Function
RS-232C/RS422A Conversion Unit
NT-AL001
RS-232C Pin Signal
3 RD
2 SD
4 RS
5 CS
+5V
6
7 DR
8 ER
9 SG
Hood FG
Shield
(See note)
Model numbers
XW2Z-070T-1
XW2Z-200T-1
Remote device
RS-422
Signal Pin Signal
SDA 4 RDA
SDB 3 RDB
RDA 6 SDA
RDB 5 SDB
1
GRD
Remote device
Signal
RDA
RDB
SDA
SDB
FG
S(1)-type CPU Unit.
Appendices
Factory setting
ON
ON
OFF
OFF
ON
OFF
A-47