Dip Switch Setting - Omron CP1E Series User Manual

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-type CPU Unit.
The Conversion Unit is insulated, so the maximum distance for RS-422A is 500 m.
Appearance

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 resistance
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.
CP1E CPU Unit Hardware User's Manual(W479)
38.8 18.2
Function
Appendices
Factory setting
ON
ON
OFF
OFF
ON
OFF
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