126Troubleshooting Communications Problems

Communications Problems

Table 15 identifies problems with communications, the possible causes, and the recommended solutions.

Table 15 • Communications Problems

Problem

Possible Cause

Recommended Solution

 

 

 

A label format was sent to

The communication

Check the printer driver or software

the printer but was not

parameters are incorrect.

communications settings (if applicable).

recognized. The DATA

 

 

 

If you are using serial communication, check

light does not flash.

 

 

the serial port setting in the control panel

 

 

 

 

menu. See Set Serial Communications

 

 

on page 89.

 

 

 

 

 

If you are using serial communication, make

 

 

sure you are using the correct communication

 

 

cable. See RS-232 Serial on page 20 for basic

 

 

cabling information.

 

 

 

 

 

Using the control panel controls, check the

 

 

protocol setting. It should be set to NONE. See

 

 

Set Protocol on page 90.

 

 

 

 

 

If a driver is used, check the driver

 

 

communication settings for your connection.

 

 

 

A label format was sent to

The serial communication

Ensure that the flow control settings match.

the printer. Several labels

settings are incorrect.

 

Check the communication cable length. See

print, then the printer

 

 

RS-232 Serial on page 20 for requirements.

skips, misplaces, misses, or

 

 

 

 

Check the printer driver or software

distorts the image on the

 

label.

 

communications settings (if applicable).

 

 

 

A label format was sent to

The prefix and delimiter

Verify the prefix and delimiter characters. See

the printer but was not

characters set in the printer

Set Format Prefix Character on page 91 and

recognized. The DATA

do not match the ones in the

Set Delimiter Character on page 92 for the

light flashes but no

label format.

requirements.

printing occurs.

 

 

Incorrect data is being sent

Ensure that ZPL II is being used.

 

 

to the printer.

 

 

 

Check the communication settings on the

 

 

computer. Ensure that they match the printer

 

 

settings.

 

 

 

 

 

If the problem continues, check the ZPL II

 

 

format for changed ^CC, ^CT, and ^CD.

 

 

 

11342L-001 Rev. A

105SL User Guide

6/30/06