User Manual 2460 Series
Programming The 2461 Module 4-38
Racal Instruments
2003
Read Protocol Error
A ‘master’ uses this command to ask its ‘slave’ to report its current error status in the form of a 16-
bit response. After having replied to this command, the ‘slave’ resets its Current Error status to ‘No
Error’.
Command:
CDFF
16
The error code is placed in the Data Low Register.
There are many possible responses:
No Error: FFFF
16
Multiple Queries
: FFFD
16
The instrument was instructed to write over a previous unread response.
Unsupported command:
FFFC
16
The instrument received an unsupported command.
DIR violation:
FFFB
16
The instrument received a command that violates the DIR protocol.
DOR violation
: FFFA
16
The instrument received a command that violates the DOR protocol.
Read Ready violation
: FFF9
16
The instrument received a command that violates the Read Ready protocol.
Write Ready violation
: FFF8
16
The instrument received a command that violates the Write Ready protocol.
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