MKS 146C - Appendix C: RS-232 Error Codes; Error Code Summary; Table 89: RS-232 Error Code Summary

Appendix C: RS-232 Error Codes Error Code Summar
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Appendix C: RS-232 Error Codes
Error Code Summary
If the 146 instrument cannot execute a command, it will respond with an error message. The
error codes are summarized in Refer to Table 89.
RS-232 Error Code Summary
Error Code Description
E111 Unrecognized command
E112 Inappropriate command
E122 Invalid data field
E131 Bad checksum
Table 89: RS-232 Error Code Summary
E111: Unrecognized Command
An “unrecognized command” error message will occur if the command syntax is incorrect. The
146 instrument cannot interpret the command string. The syntax error is located in the first four
bytes of the command.
E112: Inappropriate Command
The 146 instrument will return an “inappropriate command” error message if the command
cannot be executed on the selected channel or at this time. Examples of inappropriate commands
include attempting to:
•
Read a channel that is turned off
•
Zero an ion gauge (
Ion gauges cannot be zeroed
)
•
Read a channel that is out-of-range
•
Read a hot cathode gauge that is performing a high power degas
•
Perform a degas procedure on a channel that is not connected to a hot cathode gauge
•
Span a Pirani gauge that has the gas type set to argon or helium
(A Pirani can only be
spanned if the gas type is set to nitrogen.)
•
Enter the Auto (or PID) control mode with the recipe select command set to “none”
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