INFICON Composer Gas Concentration Controller - Manual (Page 152)

7 - 10
IP
N 07
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9L
Composer Operating Manual
7.4.4 Error Codes
7.4.4.1 Communication Errors
If there was an error with the command send to the Composer, the response
message will have the MSB of the status byte cleared. There will be one byte
of data with the following meaning:
03 . . . . . . . . . . . . . . . . . . . . . . . . . Message length was zero.
17 . . . . . . . . . . . . . . . . . . . . . . . . . Message length wrong for given command
18 . . . . . . . . . . . . . . . . . . . . . . . . . Message checksum invalid
19 . . . . . . . . . . . . . . . . . . . . . . . . . Sent Data value out of range
20 . . . . . . . . . . . . . . . . . . . . . . . . . Unknown command
21 . . . . . . . . . . . . . . . . . . . . . . . . . Data requested not currently available
22 . . . . . . . . . . . . . . . . . . . . . . . . . 3 second time out. Entire message was not
received in allotted time.
24 . . . . . . . . . . . . . . . . . . . . . . . . . The action requested by a remote
command could not be completed as
requested. (E.g. A zero frequency
command was sent when the Composer’s
frequency was not “STEADY”)
7.4.4.2 Error Log
The error log (Status command S7) has the following structure:
2 byte system/hardware errors
2 byte system warnings
4 byte unused
In each of the error and warning data areas above, any errors or warnings that
currently exist in the instrument are represented by one bit of the integer. The
meanings of the bits for each word is listed below.
This list is represented in hexadecimal, so the bit patterns are easier to see.
For more information on the meaning, causes and correction of specific errors
refer to
Table 6-7 on page 6-7 .