834
Basic I/O Unit Instructions
Section 3-23
Example
In this example, IORD(222) is used to read data.
3-23-4 INTELLIGENT I/O WRITE: IOWR(223)
Purpose
Outputs the contents of the CPU Unit’s I/O memory area to the Special I/O
Unit.
Ladder Symbol
Variations
Applicable Program Areas
Operands
C:
Varies depending on Special I/O Unit.
D:
Unit number 0000 to 005F (0 to 95)
D+1:
Number of words to transfer
(0000 to 0080 Hex, depends on the Special I/O Unit)
S+1
S
Unit number: 3
Number of words
to transfer: 10
When CIO 000000 is turned ON, 10 words are read from the Special
I/O Unit with unit number 3, and are stored in D00100 to D00109.
CPU Unit
Special I/O Unit (Unit #3)
10 words
The control code (C) varies depending on the Special I/O Unit.
S
C: Control data
S: Transfer source and number of words
D: Transfer destination and number of words
IOWR(223)
C
S
D
Variations
Executed Each Cycle for ON Condition
IOWR(223)
Executed Once for Upward Differentiation
@IOWR(223)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification
Not supported.
Block program areas
Step program areas
Subroutines
Interrupt tasks
OK
OK
OK
OK
D+1
D
D+1 : Leftmost 4 digits
D: Rightmost 4 digits
Summary of Contents for CJ1G-CPUxx
Page 3: ...iv N o t i c e ...
Page 5: ...vi ...
Page 21: ...xxii Conformance to EC Directives 6 ...
Page 35: ......
Page 1131: ...1110 CJ series Instruction Execution Times and Number of Steps Section 4 2 ...