6
Initial Power-Up and Self-Test
A self-test feature is built into the Keltron LC series printer. To start this press and hold the <TEST> switch
and power up the printer. Continue holding the <TEST> switch until the printer has started printing.
The self-test program checks the integrity of the operating program installed, the 2048 character buffer, the
processor watchdog and the power supervision circuits. If no problems are found, the following messages
are printed:
Sample Test Print:
Sample Test Print:
Sample Test Print:
Sample Test Print:
Description:
Description:
Description:
Description:
BAUD 9600, DATA 8, PARITY NONE
the current protocol settings (this line may overflow)
INTERFACE: SERIAL
type of interface being used
BATT. CLOCK INSTALLED
verifies the battery is installed (standard on all LCs)
2K BUFFER INSTALLED
indicates buffer size installed
V2.8 – LC
indicates version of firmware installed and series type
Interval Timer
Range:
5 seconds to 24 hours (can be selected manually or programmed by sending as ASCII
data string.
Action:
Once an interval is selected, the Keltron LC series printer will execute the following actions
on time-out:
1.
Transmits control character ENQ (ˆE, 05H, 5)
2.
Restarts timer
Keltron LC Series ASCII Character Set
The ASCII character set includes 255 characters. The first 32 characters (decimal 0 through 31) are
reserved control characters. The remaining 224 characters (decimal 32 through 255) are printable
characters.
Figure 2 lists the printable character set. The first 96 entries in this table are the 96 ASCII upper and lower
case characters (like what can be found on a standard QWERTY keyboard). The remaining 128 characters
are international, scientific and IBM PC extended characters.
