Cpu Module Monitoring Information - Mitsubishi Electric MELSEC iQ-R Series User Manual

CPU module monitoring information

The following explains the monitoring target information used to perform the programmable controller CPU monitoring
function.
Target of programmable controller CPU monitoring function
The following information can be registered as the target of the programmable controller CPU monitoring function.
• Device monitoring for the host station CPU module
Monitoring of the numeric values stored in the word device
Monitoring of bit devices ON/OFF status
• Monitoring status of the host station CPU module
Registering word devices and bit devices
For monitoring word and bit devices, up to 960 device points (up to 15360 bits for only bit devices) in total, which is equivalent
to 10 blocks in total when any continuous device range comprised one block, can be registered.
Since monitoring of the CPU module status on the host station will be also registered as one block, up to 11 blocks can be
registered.
• 11  (Number of registered word device blocks + Number of registered bit device blocks) + CPU status monitoring (1 block)
• 960 points  (Total number of all word device block points (1 point = 1 word) + Total number of all bit device block points (1
point = 16 bits))
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.
Example for registering word devices and bit devices
The start device of each block is the monitoring target for device monitoring of the blocks for which the word and bit devices
are registered.
Ex.
For a block in which 10 points of word devices from D100 to D109 are registered
Monitoring target: Numeric value to be stored in D100
Data transmission: Numeric values to be stored in D100 to D109
Ex.
For a block in which two points of bit devices from M100 to M131 are registered
Monitoring target: ON/OFF status of M100
Data transmission: ON/OFF status of M100 to M131
6 USING THE PROGRAMMABLE CONTROLLER CPU MONITORING FUNCTION
6.2 Programmable Controller CPU Monitoring Function
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