Synchronous Encoder Axis Statuses - Mitsubishi Electric Q172CPU Programming Manual

4 POSITIONING DEDICATED SIGNALS

4.1.5 Synchronous encoder axis statuses

(1) Error detection signal (M4640+4n)
(a) This signal turns on when a minor error or major error is detected in a
synchronous encoder or output module connected to the synchronous
encoder.
It is used as judgement of the error available/not available by turning the
error detection signal on/off.
(b) When the error detection signal turns on, the applicable error code is stored
in the error code storage register.
• Minor error code
• Major error code
The judgement of the synchronous encoder/output module for detected
error can be confirmed by the error code details or turning the error
detection signal of output module on/off.
(c) When the error reset command (M5440+4n) turns on in the state where the
synchronous encoder or output module connected to the synchronous
encoder is normal, the error detection signal turns off.
(2) External signal TREN (M4641+4n)
(a) This signal is used for clutch control in the external input mode. It turns on
by turning on the Q172EX/Q173PX "TREN" input terminal, and indicates
the input ON/OFF state of the "TREN" terminal.
(3) Virtual mode continuation operation disabled warning signal
(M4642+4n)
(Note-1)
(a) When the inputted current value at the power supply on of the Multiple CPU
system differs from the memorized current value (Final current value in
virtual mode operation) at the power supply off of the Multiple CPU system,
like the absolute synchronous encoder is moved during the power supply
off of the Multiple CPU system, this signal turns on.
The validity of continuation operation in virtual mode can be confirmed at
the power supply on or resetting of the Multiple CPU system.
(Note-1)
(Note-2) ... Stored in the minor error code storage register
(Note-3) .
(Note-2)
... Stored in the major error code storage register
(Note-3) .
(Note-1)
....................................................... Status signal
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................... Status signal
.................... Status signal