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Connecting a Printer Section 3-3
3-3 Connecting a Printer
Connecting a printer to the NT31/NT31C enables printing of hard copies of
the currently displayed screen (printing of screen images), and, by system
menu operations, printing of the screen display history and alarm history.
The following types of data can be printed, depending on the printer con-
nected to the NT31/NT31C. For details, refer to the pages cited.
• Hard copies of the screen (Refer to information on printing data and
checking the printer status in the NT31/NT31C/NT631/NT631C Program-
mable Terminal Reference Manual.)
• Screen display history record data (page 198)
• Alarm history record data (page 200)
3-3-1 Connection Method
Connect the printer to the NT31/NT31C with a Centronics cable, as shown
below. The length of the cable should not exceed 1.5 m.
Reference: If the connector cable is connected or disconnected while the power to the
printer is on, the NT31/NT31C may malfunction. Always turn off the power to
the printer before connecting or disconnecting the cable.
Recommended Connector Cable
The following connection cables are recommended.
• NT-CNT121 (1.5 m, 20-pin to 36-pin), made by OMRON
Recommended Printers
When using a printer, use one that can emulate an NEC PC-PR201H (us-
ing the NEC PC-PR201PL control protocol) or complies with one of the fol-
lowing EPSON control standards: ESC/P 24-J83C (color), or ESC/P 24-
J82 (monochrome).
When using a monochrome printer with an NT31C, set Tone printing with
the NT31C memory switches (page 175).
3-4 Connecting a Bar Code Reader
Connecting a bar code reader to the NT31/NT31C enables bar code data to
read as character strings into character string input fields, and set in character
string memory tables.
In order to use a bar code reader, the Comm. A Method memory switch must
be set to Bar-Code Reader.
For details on the method for inputting character strings with a bar code
reader, refer to 3-7 Input of Numeric Values and Character Strings in the
NT31/NT31C/NT631/NT631C Programmable Terminal Reference Manual.
Note Make sure that the power supply to the bar code reader and the power supply
to the PT are both OFF before connecting or disconnecting the cable.
24V
DC
PRINTER PORT B PORT A
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