Mitsubishi Electric MELSEC IQ-R series Reference Manual page 269

CPU error monitoring, CPU status information
Specify whether to perform error monitoring for the host station CPU module.
CPU error monitoring
Do not perform error monitoring for the host
station CPU module.
Perform error monitoring for the host station CPU
module.
When the error monitoring is performed, the CPU monitoring result is stored in the response data as a CPU status
information.
The following values are stored in the CPU status information.
Specified value CPU status
0000H During normal operation
0001H Module warning occurring
0002H Module error/module system error occurring
■Data communication in ASCII code
Convert the numerical value to 4-digit ASCII code (hexadecimal) and store it in the 'Device Data' in the following format from
upper digits.
0 1 0 0 0 0 0
30 31 30 30 30 30 30 30
H H H H H H H
■Data communication in binary code
Store the 2-byte numerical values in the 'Device Data' in the following format from lower byte (L: bits 0 to 7).
Device data
01 00 00 00 01 00
H H H H H H
Monitoring condition
When 'fixed cycle send' is specified with the programmable controller CPU monitoring function, specify '0'.
ASCII code
0 0 0 0
30 30 30 30
H H H H
When 'condition match send' is specified with the Programmable controller CPU monitoring function, specify the value below.
The timing to send the result can be selected.
• Edge trigger transmission: Send the result when the condition matches.
• Level trigger transmission: Send the result in the cycle time interval during the condition matches
Edge trigger Level trigger
transmission transmission
0001H 0101H
0002H 0102H
ASCII code
0 0
30 30
H H
0 1
30 31
H H
0 0 0 0 1 Device data
30 30 30 31
H H H H H
Binary code
00 00
H H
Monitoring condition
ON/OFF status of device = ON/OFF status of monitoring
condition
Device value = Monitoring condition value
ON/OFF status of device  ON/OFF status of monitoring
condition
Device value  Monitoring condition value
13 SERIAL COMMUNICATION MODULE DEDICATED COMMANDS
Binary code
00
H
01
H
13.5 Programmable controller CPU monitoring function
Device type that can be
specified
Bit device
Word device
Bit device
Word device
267
13