Testing The Printhead; Reading System Counters - Intermec EasyCoder 501XP Programmer's Reference Manual

7.5 Testing the Printhead

The thermal printhead can be tested in three ways:
? FUNCTEST$ ("HEAD")
The printhead is tested for number of dots and possible faults. There are 3 possible responses:
"HEAD OK, SIZE:nnn DOTS" (nnn is the number of dots)
"HEAD LIFTED"
? HEAD(<check type>)
<check type> ≥ 0:
<check type> = -1:
<check type>= -7:
Refer to the Intermec Fingerprint v7.80, Programmer's Reference Manual.
? SYSVAR(<parameter>)
<parameter> = 21
<parameter> = 22

7.6 Reading System Counters

There are a number of counters in the printer's system, that can be read
and returned to the host:
? SYSVAR (<parameter>)
<parameter> = 13
<parameter> = 14
<parameter> = 15
<parameter> = 24
<parameter> = 32
Note:
SYSVAR(24)
Intermec Direct Protocol, since essential functions, like coun-
ters, date and time formats, separators and error messages will
be lost at power up and other functions will be reset to their
default values. Save all such data in the host and retransmit
them to the printer as soon as a power-up has been detected by
a polling program taking advantage of
Intermec Direct Protocol v7.80 Programmer's Reference Manual
Chapter 7 — Reading the Printer's Status
(lower the printhead and try again) "FAULTY PRINTHEAD" (an error is
detected)
returns resistance of the specifi ed dot in ohms
checks printhead. Returns -1 of OK, else 0
returns mean resistance of printhead in ohms
returns printhead density in dots per mm
returns the number of dots in the printhead
returns the value of the XP ribbon counter
(requires a ribbon low sensor)
returns number of errors detected since last startup
returns number of errors detected since the last executed SYSVAR(15)
returns power-up status since the last executed SYSVAR(24): (0 = No;
1=Yes)
returns the length of media feed. Resolution 10 meters.
is important for the operation of the
.
SYSVAR(24)
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