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ControlNet Instruction Set
Appendix C
C-2
Immediate Data I/O Instructions
Instruction Description
IDI
IMMEDIATE DATA INPUT
Data file offset
Length
232
10
Destination
N11:232
Immediate Data
Input
IDI
If the input conditions are true, an immediate data input is initiated that
updates the destination file from the private buffers before the next normal
inputimage update. The Data file offset (232) is where the data is stored.
The Length (10) identifies the number of words in the transferit can be an
immediate value ranging from 1 to 64 or a logical address that specifies the
number of words to be transferred. The Destination (N11:232) is the
destination of the words to be transferred. The Destination should be the
matching datatable address in the DIF except when you use the instruction
to ensure datablock integrity in the case of Selectable Timed Interrupts
(STIs). See page 47.
IDO
IMMEDIATE DATA OUTPUT
Data file offset
Length
175
24
Source
N12:175
Immediate Data
Output
IDO
If the input conditions are true, an immediate data output is initiated that
updates the private memory output buffers from the source file before the
next normal outputimage update. The Data file offset (175) is the offset
into the buffer where the data is stored. The Length (24) identifies the
number of words in the transferit can be an immediate value ranging from
1 to 64 or a logical address that specifies the number of words to be
transferred. The Source (N12:175) is the source of the words to be
transferred. The Source should be the matching datatable address in the
DOF except when you use the instruction to ensure datablock integrity in
the case of Selectable Timed Interrupts (STIs). See page 47.
For detailed information on the instruction set for programming PLC-5
processors, see the Enhanced and Ethernet PLC-5 Programmable
Controllers User Manual, publication 1785-6.5.12, and the PLC-5
Programming Software Instruction Set Reference, publication 6200-6.4.11.
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