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6 USING THE PROGRAMMABLE CONTROLLER CPU MONITORING FUNCTION
6.2 Programmable Controller CPU Monitoring Function
Data transmission to target device communicating with nonprocedural protocol
The device information and CPU information are transmitted by the word/byte unit designation.
■When ASCII-BIN conversion for communication data is designated
Data is converted to ASCII code data and transmitted. (The transmission example is shown in the "Device information and
programmable controller CPU status information".)
• When the word/byte units designation is set to word
The device information and CPU information is transmitted by 1-word in the order of (H) and (L).
• When the word/byte units designation is set to byte
The device information and CPU information is transmitted by 1-word in the order of (L) and (H).
■When the interface that uses the modem function is set to the nonprocedural protocol
The connection processing and disconnection processing to the modem are performed when the programmable controller
CPU monitoring results are transmitted.
Data transmission by nonprocedural protocol with modem function (condition match send)
■When transmitting monitoring results as data during fixed cycle send
The device information of one or more user frame numbers and programmable controller CPU status information that have
been currently designated for the fixed cycle send in C24 is transmitted in batch.
■When transmitting the monitoring results as data during condition match send
The device information of one or more user frame numbers and programmable controller CPU status information that have
been currently designated for the condition match send of the block where the monitoring conditions satisfied in C24 is
transmitted in batch.
When the monitoring conditions of two or more blocks match, the device information and programmable controller CPU status
information are transmitted for each block.
When the ASCII-BIN conversion for the communication data using the nonprocedural protocol is performed,
all of the device monitoring start device number is converted to hexadecimal ASCII data and transmitted. (The
same conversion is performed during either fixed cycle send or condition match send.)
■The user frame numbers that can be designated for data transmission of programmable
controller CPU monitoring results
• 1H to 3E7H (Default registration frame numbers)
• 3E8H to 4AFH (Frame numbers registered by the user in the flash ROM)
• 8001H to 801FH (Frame numbers registered by the user in the buffer memory)
• B001H to B01FH (Dedicated frame numbers for this function) (Page 129 Transmission instruction of device information
and programmable controller CPU status information when transmitting the monitoring results)
For details on how to designate user frame numbers, refer to the following section.
Page 276 DATA COMMUNICATIONS USING USER FRAMES
END END END
Monitoring information
Disconnection
Dial
One-block
portion
One-block
portion
Cycle time
Target device
Program
(conditions matched/not matched)
Matched Not matched Matched
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