Mitsubishi Electric MELDAS C6 Interface Manual page 247

B con-
Signal name
tact
—
RECALCULATION REQUEST CRQ
[Function]
This signal is turned ON if a calculated block (next block) is recalculated during operation of the
machining program.
[Operation]
For example, to operate mirror image, etc., with the miscellaneous (M) command in the program.
N1 M45;
N2 G0X100;
When the N1 block is reached in the above program example, the "Recalculate request" signal will
turn ON before FIN is output or simultaneously with FIN.
This will validate the mirror image from the N2 block.
Execution block
M function strobe (MF)
Recalculate request (CRQ)
Auxiliary function finish (FIN)
Calculate next block
Mirror image
[Caution]
The CRQ signal latches the rising edge in the controller. Thus, even if the CRQ signal is ON (1), the
"recalculation" will not take place unless at the rising edge.
6. EXPLANATION OF INTERFACE SIGNALS
6.3 PLC Output Signals (Bit Type: Y***)
Signal
abbreviation
To apply mirror image with this M command
N1 M45;
Control unit latches rising edge
N1 M45;
N2 G0X100 calculation start
1st system
Y72B
N2 G0X100;
Recalculate N2 G0X100
ON
6-3-50
2nd system 3rd system
Y80B Y8EB