The Output Extended Error Instruction, Esc.e - HP 7470A Interfacing And Programming Manual

The Output Extended Error Instruction,
ESC.E
UESCRIPHUN The output extended error instruction, ESC . E, outputs
a number which defines any RS-232—C r elated I/O error and turns off
the front-panel ERROR light.
USES The instruction is used to define what type of RS-232-Crelated
I/O error has occurred, if any.
SYNTAX _ E
EXPI-ANAHDN No parameters are used.
RESPONSE
<DEC>
The plotter's response is a decimal number, either 0 or —
in the range 10-16, followed by the output terminator.
The meaning of the response is as defined in the follow­
ing table.
Error
No.
Meaning
0
10
11
12
13
14
15
16
No 1/0 error has occurred
Output instruction received while another
output instruction is executing. The original
instruction will continue normally; the one
in error will be ignored.
Invalid byte received after first two charac­
ters, ., in a devicecontrolinstruction.
Invalid byte received while parsing a device
control instruction. The parameter containing
the invalid byte and all following parameters
are defaulted.
Parameter out of range.
Too many parameters received. Additional
parameters beyond the proper number are ig­
nored; parsing of the instruction ends when a
colon (normal exit) or the first byte of another
instruction is received (abnormal exit).
A framing error, parity error, or overrun
error has been detected.
The input buffer has overflowed. As a result,
one or more bytes of data have been lost, and
therefore an HP-GL error will probably occur.
RS-232—C/CCITTV.24 INTERFACING 10-27