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7 AUXILIARY AND APPLIED FUNCTIONS
(b) Single block mode (M4408)
This signal makes a single block valid.
(c) Single block start (M4409)
This single starts a program in a single block waiting status.
(2) How to execute single block from a start
When the single block mode signal (M4408) turns ON, the single block
processing signal (M4009) turns ON. In this status, turn ON the Motion program
(Axis designation program).
After the first block is executed, execution waits for the single block start signal
(M4409) to turn from OFF to ON.
N2N1
Executing PLC No.
Start accept flag (M2001+n)
Single block processing signal (M4009)
Single block mode signal (M4408)
Single block start signal (M4409)
Motion program (Axis designation
program) start instruction
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
ON
ON
(3) How to continue single block
Turn the single block start signal (M4409) from OFF to ON while the single block
processing signal (M4009) is ON.
After one block program is executed, execution waits for the single block start
signal to turn ON.
N3N2N1
Executing PLC No.
Single block in processing signal (M4009)
Single block start signal (M4409)
Single block mode signal (M4408)
OFF
ON
OFF
OFF
ON