INFICON Cygnus Thin Film Deposition Controller User Manual

Page 185

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N 07

Cygnus Operating Manual

b. B = illegal value

b. the parameter's value
sent is outside the range for
the given parameter, verify
parameter's range

c. C = illegal ID

c. the command sent was
for a parameter which
doesn't exist; verify the
correct parameter number

d. E = no data to retrieve

d. some parameters may
not be in use, depending on
the value of other
parameters

e. F = cannot change value
now

e. the command sent is for a
parameter that cannot be
changed while the channel
or instrument is not in STOP
or READY; place the
instrument in the STOP or
READY state in order to
change the value

f. L = length error

f. The response could
overflow the return buffer.

g. P = prior command failed g. If one command of a

multi-command packet
fails, none of the following
commands will be
performed and this error
code will be returned for
these commands.

3. Error code returned and
CCB has MSB set.

a. C = invalid checksum

a. Received packet
checksum was different
from checksum byte value.

b. F = illegal format

b. Too many bytes for the
commands requested.

c. L = illegal length

c. Not zero nor bigger than
max allowed (Add).

d. M = too many commands d. maximum of 100

commands allowed.

e. T = Time-out

Table 8-3 Troubleshooting Computer Communications (continued)

SYMPTOM

CAUSE

REMEDY