Mitsubishi MELSEC L Series User Manual page 359

Functions
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(1) To register the programmable controller CPU monitoring, this instruction registers
data necessary for the Q series C24 to execute the programmable controller CPU
monitoring function.
When the data registration to execute the programmable controller CPU
monitoring function is completed normally, the Q series C24 begins monitoring the
programmable controller CPU and transmitting monitoring results to an external
device.
(2) To cancel the programmable controller CPU monitoring, this instruction ends the
Q series C24's monitoring operation of the programmable controller CPU.
When canceling of the programmable controller CPU monitoring is completed
normally, the Q series C24 terminates the operation of the programmable
controller CPU monitoring function.
(3) A maximum of 10 blocks can be designated for a word device or bit device to
monitor the device memory.
To register the device memory to monitor, designate the word device blocks for
the registered word blocks, then designate the bit device blocks for the registered
bit blocks.
(4) Before sending the programmable controller CPU monitoring results to the
external device, the user frame and user frame number should be registered with
GX Configurator-SC in advance.
(5) To register the programmable controller CPU monitoring once again, cancel the
programmable controller CPU monitoring before registration.
(6) Whether the CSET instruction is being executed or has been completed
normally/abnormally can be checked by the completion device (D2) designated as
a setting data.
(a) Completion device ((D2) + 0)
Turns on at the END processing of the scan where the CSET instruction is
completed, and turns off at the next END processing.
(b) Completion device ((D2) + 1)
Turns on and off depending on the completion status of the CSET instruction.
• Normal completion
• Abnormal completion: Turns on at the END processing of the scan where
(7) When the programmable controller CPU monitoring registration is performed, the
corresponding interface data communication protocol setting is only designated
when non procedure protocol is used for the following data for designation in the
control data.
• User frame output head pointer for constant cycle sending/ batch conditions
sending.
• User frame transmission count for constant cycle sending/ batch conditions
sending.
When the communication protocol setting for the corresponding interface is MC
protocol, there is no need to designate the user frame output head pointer and
the user frame transmission count. (It is ignored when being designated.)
: Stays off and does not change.
the CSET instruction is completed, and turns off at
the next END processing.
17 DEDICATED INSTRUCTIONS
17- 12