Exception Responses - Satec PM130 Reference Manual

3.6 Exception Responses

The instrument sends an exception response when errors are detected in the received
message. To indicate that the response is notification of an error, the high order bit of the
function code is set to 1.
Exception Response
Instrument Function (high
Address order bit is set to 1)
1 byte 1 byte
Exception response codes:
01 - Illegal function
02 - Illegal data address
03 - Illegal data value
06 - Busy, rejected message. The message was received without errors, but the instrument is
being programmed from the keypad (only for requests accessing setup registers).
NOTE When the character framing, parity, or redundancy check detects a communication
error, processing of the master's request stops. The instrument will not act on or respond to the
message.
9
Exception Error Check
Code
1 byte 2 byte