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5 OPERATION CONTROL PROGRAMS
(3) Indirect specification of device No.
In the above word/bit device descriptions, device No. (n) can be specified
indirectly.
(a) 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.
(Description examples)
(b) 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.
Usable data
Usable operators
• The word device which the device No. is specified indirectly cannot be
used.
• Only one operator may be used.
(Description examples)
(Note) : When you want to use the result of calculation other than the above
to specify the device No. indirectly, describe it in two blocks as
shown below.
D0=SHORT(ASIN(#0F))
W0=#(D0)
Good example
#(D10)
D(#10L)F
16-bit integer type word device
32-bit integer type word device
16-bit integer type constant
32-bit integer type constant
Addition: +
Subtraction:
Multiplication:
Division: /
Remainder: %
Sign inversion:
Good example
#(D10-K5)
D(#10L%H6L)F
5 - 8
Bad example
#(D(D5))
D(#4F)
Bad example
#(D(D5)F+K20)
D(#4L<<K2)
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