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5. Utility Operations
5.5.8
Turning ON/OFF Bit Device
Turns on/off the specified bit device.
DANGER
To perform control (data change) of the PC CPU module during operation,
configure an interlock circuit on the user program so that the whole system runs
safely at all times.
To perform other control (change in the running status (status control)) of the
PC CPU module during operation, also configure an interlock circuit on the
user program so that the whole system runs safely at all times.
Especially, when performing the above control of a remote PC CPU module
from an external device, a problem occurring at the PC CPU module due to
abnormal data communication may not be addressed immediately.
In addition to configuring an interlock circuit on a user program, determine a
system method between the external device and PC CPU module in case of
abnormal data communication.
Point
BitDeviceSet (reset) makes it possible to turn ON/OFF devices that can be randomly accessed.
If a device that cannot be randomly accessed is turned ON/OFF, a device type error (-3) occurs.
For information about the availability of random access support for each device, refer to “Chapter 7
Accessible Range and Devices”.
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PPC-CPU852(MS)-512