4 OPERATION CONTROL PROGRAMS
4.2 Device Descriptions
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• When using the device in DIN or DOUT as batch bit data, specify "n" as a multiple of 16.
• When using the following device as batch bit data, specify it as word device without making bit specification.
Indirect specification of device No.
In word/bit device descriptions, device No. (n) can be specified indirectly.
■Indirect specification of device No. (n) using word device
• The word device which the device No. was specified indirectly cannot be used.
• You can use the 16-bit and 32-bit integer type word devices for indirect specification. The 64-bit floating-point type cannot
be used.
• The word devices that can indirectly specify device No.(n) are shown below.
Description examples
■Indirect specification of device No. (n) using word device using operation expression
• Device No. can be specified indirectly by calculation expressions which use the following data and operators.
Device name
Data register (D)
Link register (W)
Motion register (#)
Special register (SD)
CPU buffer memory access device (U3E\G)
CPU buffer memory access device (fixed scan communication area) (U3E\HG)
Module access device (U\G)
• Data register (D)
• Link register (W)
• Motion register (#)
• Special register (SD)
Good example Bad example
#(D10) #(D(D5))
D(#10L)F D(#4F)
#(D10).1 #10.(D5)
Usable data 16-bit integer type word device
32-bit integer type word device
16-bit integer type constant
32-bit integer type constant
Usable operators Addition: +
Subtraction: -
Multiplication: *
Division: /
Remainder: %
Sign inversion: -
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