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Communication
3255 4073–002 5–9
Setting Switches
The DIP switches are located at the rear of the printer as shown in the
illustration. They are used to set the communication parameters as outlined in
the table. These parameters must match those of the host computer in order for
the host computer and the printer to communicate.
Note: The switches are also used for setting other functions and tests. Be
careful not to accidentally change the settings for the other functions.
For more information, see “Level 1 Diagnostics” in section 3.
Use a straightened paper clip or other pointed object to set the switches.
1. Turn the printer to the back to access the DIP switches.
2. Set the switches to the settings you want, using the options in the tables
below.
There is one table for RS-232C interface settings and one for parallel
interface settings.
Caution
Do not set switch 1 to On. Setting switch 1 to On puts the printer in Level 1
diagnostics (setup mode) where other functions and tests can be changed. Set
switch 1 to Off when setting switches for the interface settings. This puts the
printer in the Online mode so it can communicate with the host computer.