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A-51
Appendices
CP1E CPU Unit Hardware User’s Manual(W479)
A
-3 Wiring
for Serial C
o
m
m
un
icati
ons
App
A-3-3
Converting the Built-
in
RS-232C
P
o
rt to
RS-4
22A/485
* The hood and the connector hood to which it is connected will have the same electrical potential.
DIP Switch for Operation 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 using 2-wire connections, set pin 6 to ON (RS control enabled).
Dimensions
The NT-AL001 RS-232C/RS-422A Conversion Unit is used to connect a device with RS-232C termi-
nals to a device with RS-422A terminals.
A cable is used to connect the built-in RS-232C port of the CP1E N/NA
(S
)-type CPU Unit.
The Conversion Unit is insulated, so the maximum distance for RS-422A is 500 m.
Appearance
Pin
Setting
ON
OFF
1
Terminating resistance
selection
Terminating resistance connected
(both ends of transmission path)
Terminating resistance
not connected
2
2-wire or 4-wire selection*
1
2-wire connections
4-wire connections
3
2-wire or 4-wire selection*
1
2-wire connections
4-wire connections
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.)
NT-AL001 RS-232C/RS-422A Conversion Unit
5.8
38.8
34.0
18.2
Summary of Contents for CP1E-E**D Series
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Page 66: ...2 Basic System Configuration and Devices 2 22 CP1E CPU Unit Hardware User s Manual W479...
Page 318: ...Appendices A 54 CP1E CPU Unit Hardware User s Manual W479...
Page 322: ...Index 4 CP1E CPU Unit Hardware User s Manual W479...
Page 324: ...Revision 2 CP1E CPU Unit Hardware User s Manual W479...
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