Asynchronous Terminals and Printer Processes Programming Manual

PRINTER PROGRAMMING CONSIDERATIONS

Error Handling

When interpreting file-system errors, beware of subtle differ-

ences between the 5530 and the 5520. The following table

summarizes the meanings of various errors for the 5530.

Table 7-3. 5530 Errors

Error Error

Number Name Meaning

_______________________________________________________________

21 ILLEGAL COUNT The specified byte count is

greater than the configured

record size.

100 DEVICE NOT READY The printer is not ready.

102 PAPER OUT An operator-correctable fault

has occurred (such as printer

out of paper, printer cover

open, end of ribbon).

104 NO RESPONSE Printer did not return

FROM DEVICE requested status. This might

indicate that the printer is

powered off, a hardware problem

exists, or the cable to the

printer is bad.

120 DATA PARITY Data parity error occurred,

ERROR which was not recoverable.

121 DATA OVERRUN 1. Buffer overflow occurred

while sending data to the

printer, or

2. Buffer full condition lasted

longer than the allowed

time.

November 1987 7-17