Analog Output Test During Programmable Controller Cpu Stop - Mitsubishi Electric MELSEC Q Series User Manual

3 SPECIFICATIONS

3.2.2 Analog output test during programmable controller CPU STOP

D/A conversion enable/disable setting
Setting
(buffer memory address 0: Un\G0)
combination
CH Output enable/disable flag (Y1, Y2)
Analog output test
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(1) During the programmable controller CPU STOP, an analog output test as shown
in Table 3.4 can be performed.
(2) The analog output test performs the following operations in GX Developer device
testing or GX Configurator-DA selection testing described in Section 5.6.1.
(a) Set D/A conversion enable/disable setting (buffer memory address 0:
Un\G0) of the channel to be tested to enable.
(b) Turn Operating condition setting request (Y9) from off to on. (Refer to
Section 3.3.2.)
(c) Check that Operating condition setting completed flag (X9) turns off, and
then turn Operating condition setting request (Y9) from on to off.
(d) Enable (off
where the test is to be conducted.
(e) Write a digital value corresponding to the desired analog output value in
CH Digital value (buffer memory address 1, 2: Un\G1, Un\G2) in the
buffer memory.
Table 3.4 List of analog output test
1 Perform the analog output test after changing D/A conversion enable/disable setting (buffer
memory address 0: Un\G0) to enable.
POINT
When the digital value storage device has been set in the automatic refresh setting
of GX Configurator-DA, the buffer memory is overwritten since automatic refresh is
performed if the programmable controller CPU is during STOP.
In this case, write a digital value to the digital value storage device instead of the
buffer memory.
on) Output enable/disable flag (Y1, Y2) of the channel
Enable
Enable
Allowed
MELSEC-Q
Disable
Disable Enable
Not allowed
Not allowed
disable
1
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