Diagnostic Information
The DPP250’s LF switch/button is used for entering various printer modes. These modes can be used to assist developers in debugging problems related to programming and communication. The following explain how to access the various operating modes.
Step #1: Make sure the printer is OFF
Step #2: Press and hold the line feed button (LF). While pressing the (LF) button, press the (POWER) button momentarily and release when one of the conditions bellow:
LF Button Operation Modes
Holding LF button while power on | SHORT SELF TEST print. |
for ~ 0.5 sec and releasing it |
|
after |
|
Holding LF button while power on | Hex DUMP mode. All |
for ~ 2.5 sec and releasing it after | input data are printed as |
| hexadecimal. |
Holding LF button while power on | LONG SELF TEST print. |
for ~ 4.5 sec and releasing it after |
|
Holding LF button while power on | Program mode – |
for more than 8.5 sec and releasing it after | loading the printer |
the | firmware. |
Holding ON button while power on | Temporary forcing |
for ~ 4 sec and releasing it after | 9600 bps serial speed. |
Holding ON button while power on | Hardware Setup Mode. |
for ~ 6 sec. |
|
Table 5 |
|
Note: Care must be taken when entering operating modes to prevent the clearing of factory preset configuration information.
Infinite Peripherals, Inc.
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