Specification Method For Extended File Register - Mitsubishi Electric MELSEC IQ-R series Reference Manual

Specification method for extended file register

The specification method differs depending on the command.
• ACPU common command: Specify with device number and block number.
• AnA/AnUCPU common command: Specify the address from device number 0 of block number 1 as a device number.
(Access with the consecutive device number of extended file register using usable number of blocks  8192 points.)
Device numbers specified
with the ACPU common commands
0
to Block No.1
8191
0
to Block No.2
8191
1 word
Range of block number and device number that can be specified
An extended file register has blocks numbered from '0' to 'n' (the n differs depending on the memory cassette). Block number
'0' has a number of points registered with a parameter of the CPU module, while block numbers '1' to 'n' have a register of
8192 points in each block.
However, the range that can be read from or written to the CPU module will be the range specified in the parameter of 0 block.
The range of block numbers and device numbers that can be specified differ depending on the type of memory cassette and
the parameter setting in the CPU module. For details, refer to the operating manual of UTLP-FN1 or FNUP, or user's manuals
of AnACPU and AnUCPU.
• The AnA/AnUCPU common commands can be used for reading/writing data to the extended file register of
block number 1 to 256. In addition, the commands can be used regardless of the existence of file register
parameter.
• When accessing the file register (R) set by parameter or when accessing it by specifying block number, use
ACPU common commands.
17 COMMUNICATING USING 1C FRAMES
372
17.5 Read and Write Extended File Register
Device numbers specified with the
AnA/AnUCPU common commands
0
Area of
to
block No.1
8191
8192
Area of
to
block No.2
16383
16384
1 word
Device numbers are automatically assigned in
ascending order beginning from the device with
block No.1 to the device with block No.256.