INFICON Cygnus Thin Film Deposition Controller - Manual (Page 184)

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Cygnus Operating Manual
8.2.4 Troubleshooting Computer Communications
Table 8-3 Troubleshooting Computer Communications
SYMPTOM CAUSE REMEDY
1. communications cannot
be established between the
host computer and the
instrument a. improper cable
connection a. verify for correct cable
wiring as described in the
manual
b. BAUD rate in host
computer not the same as
the instrument b. verify BAUD rate in the
host's applications
program, verify BAUD rate
in the instrument
c. incompatible protocols
being used c. verify that the instrument
protocol: RS232, GPIB,
matches host
d. incorrect device address
(GPIB) d. verify device address in
host's applications
program, (or in IBCONF file
for National Instrs. GPIB)
and verify instrument
address
2. error code returned and
CCB has MSB clear a. A = illegal command a. the command sent was
not valid; verify command
syntax