INFICON IC/5 Thin Film Deposition Controller - Manual (Page 286)

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IC/5 Operating Manual
f. F = cannot change value
now f. the command sent is for a
parameter that cannot be
changed while the
instrument is executing a
Process; place the
instrument in the
READYstate in order to
change the value
g. G = bad checksum g. checksum value does not
match the value sent by the
host's application program,
may be caused by noise on
the RS232 cable or the
checksum is not calculated
properly by the applications
program
h. 0 = data overrun h. I/0 port unable to keep up
with data transfer rate;
lower BAUD rate, increase
speed of host's applications
program by; using a
compiled version of the
program, stream lining
program execution, use a
faster CPU
Table 13-3 Troubleshooting Computer Communications
SYMPTOM CAUSE REMEDY