Mitsubishi QD51 Programming Manual page 375

11 INSTRUCTIONS AND FUNCTIONS
Processing Code 12
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Reading a special function module's buffer memory
Control table format definition
Element position
Format 1 Format 2
%(0) • • • • • • •
%(0)
%(1)
%(2)
%(3)
%(1) %(4)
%(2) %(5)
%(3) %(6)
%(4) %(7)
%(5) %(8)
• It is possible to read the data of the special function module's buffer memory
using this code.
• Specify the following data for <control table>.
Format 1 control table
%(0) • • • • • •
%(1) • • • • • •
%(2) • • • • • •
%(3) • • • • • •
%(4) • • • •
%(5) • • • • • •
Format 2 control table
%(0) • • • • • •
%(1) • • • • • •
%(2) • • • • • •
Item
Station number
Control table
Network number
Station number
Detailed error code
Processing code
Module number
Buffer memory
address
Number of bytes
Specify the station number of the PLC CPU from which
data is to be read.
See Section 4.2.2 for the allowable specification range.
Processing code
• Specify 12.
Specify the module number of the special function module
whose buffer memory data is to be read.
Specify the address of buffer memory whose data is to be
read.
Specify how many bytes of data should be read, including
the specified buffer memory address of the special function
module.
The allowable specification range is from 1 to 128.
Format 2 control table
• Specify 256.
Specify the number of the network to be accessed.
See Section 4.2.2 for the allowable specification range.
Specify the station number of the PLC CPU from which
data is to be read.
See Section 4.2.2 for the allowable specification range.
MELSEC-Q
Description
Specify the station number of the PLC.
Specify a control table of format 2.
Specify the network number.
Specify the station number of the PLC.
Detailed error codes are stored here.
Specify the processing code.
Specify the module number of the
special function module.
Specify the buffer memory address.
Specify the number of bytes to be read.
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