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MELSEC-Q
11 INSTRUCTIONS AND FUNCTIONS
Monitor registration of device memory
Control table format definition
Element position
Item
Description
Format 1
Format 2
%(0)
• • • • • • •
Station number
Specify the station number of the PLC.
%(0)
Control table
Specify a control table of format 2.
%(1)
Network number
Specify the network number.
%(2)
Station number
Specify the station number of the PLC.
%(3)
Detailed error code
Detailed error codes are stored here.
%(1)
%(4)
Processing code
Specify the processing code.
%(2)
%(5)
Processing unit
Specify the processing unit of the device.
Processing Code 2
%(3)
%(6)
Number of points
Specify the number of points to be
monitored.
• This code is used to perform monitor registration of device memory of the PLC
CPU, except extension file registers.
• By performing monitor registration, it becomes easy to monitor devices
nonsequentially using the PCRD instruction.
• Specify the following data for <control table>.
Format 1 control table
%(0)
• • • • • •
Specify the station number of the PLC CPU whose device
memory will be registered to be monitored.
See Section 4.2.2 for the allowable specification range.
%(1)
• • • • • •
Processing code
• Specify 2.
%(2)
• • • • • •
Specify whether the monitoring of the device is to be
performed in word or bit units.
• When reading in bit units • • • • • 1
• When reading in word units • • • 2
%(3)
• • • • • •
Specify the number of device points to be monitored. The
allowable specification ranges for the number of points are
as follows:
• When bit units are specified
• Bit devices
1 to 40 points
• When word units are specified
• Bit devices
• Word devices
1 to 20 words
(16 to 320 points, in units of
16 points)
1 to 20 words
