
FANUC PMC-MODEL SD7
Programming Manual
01 01.11.26
Hanaoka
New
A-78550E
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Note
1. In the Override mode, the refresh cycle of the I/O signal is 8msec, which is synchronized with the
1
st
level of the ladder program. Usually, the refresh cycle of the I/O link is 2msec. So, the timing
of the signals for I/O devices is delayed. Pay attention the change of work of the ladder program
which depends on the timing of the I/O devices.
2. The processing time of the 2
nd
level of the ladder program might get longer in the override mode.
3. The relay coils which are set in the override mode are displayed as the processing result of the
ladder program in the ladder monitor screen. The output value for the I/O devices is forced to be
changed. Pay attention that the values on the ladder monitor screen does not correspond with the
output values for the I/O devices.
Ex.) : I/O UNIT-MODEL A is connected with %Q1. And %Q1 is forced to be changed.
Usually, the display values on the ladder screen correspond with the output values for the I/O
UNIT-MODEL A as follows.
I/O Unit-MODEL A NC
%I1 %Q1
OFF OFF
Ladder Monitor
%Q1=OFF
If you set “1” into the %Q1 in the override mode, the value is output to the I/O UNIT-MODEL A
as follows.
OFF
I/O Unit-MODEL A NC
%I1 %Q1
OFF
Ladder Monitor
%Q1=ON