Aux.
relays
M110
to M117 and M120
to
M127 aux. relays
(16
points in all) are prepared in the PGU, which can
be freely utilized by the user.
The following special aux. relays (except for
M103)
can only be read, as they are reserved and driven
automatically by the
PGU.
BFM#4 bO
BFM#4 bl
BFM#4 b2
BFM#4 b3
This is active at
all
times in the AUTO mode
if
an error has not been generated.
This is used
to
forcibly drive various coil instructions which are driven by contacts.
(see page 126).
In the AUTO mode, M101 is set and held when
DRV
ZRN
is completed.
It
is only reset
when the mode is switched
to
MANUAL or the power is turned OFF.
Therefore, this can be used
so
that home reset only occurs
1
time (see page 45).
However, when the PARA number 23 setting is ‘2’ or “3’, M101 is turned
ON
by the
machine home position return regardless of the operating mode, and the operation status
is held even after AUTO mode is canceled.
M102 is
ON
when a start pulse is received in the AUTO mode, and is reset by the STOP
input (BFM#l b4 signal sent from input terminal of the PGU or the programmable
controller).
M102 may serve as the signal
to
acknowledge that a start command has already been
entered.
When M103 is driven, execution of the succeeding steps (excluding
ELK
inst.) are
prohibited anywhere in the program.
1 -step transfer is executed each time the START command is applied (see page
50).
This is valid when both BFM#1 bO and bl are OFF. If BFM#l bO is ON and bl is OFF,
M103 is operated and a similar stepping operation is performed.
These are used as general outputs
to
programmable controllers.
When M110
to
M117 are turned ON and OFF, BFM#4 b8
to
b15 go
ON
and OFF
BFM#4
These are used as general inputs from programmable controllers.
When BFM#2 bO
to
b4 and b8
to
b15 are turned
ON
and OFF, Y440
to
Y444 and M120
to
M127 go ON and OFF.
EFM#2
-2a-
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