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303
Publication 1766-RM001A-EN-P - October 2008
Chapter
18
Input and Output Instructions
The input and output instructions allow you to selectively update data
without waiting for the input and output scans.
IIM - Immediate Input
with Mask
Instruction Type: output
Instruction
Used To:
Page
IIM - Immediate Input with Mask Update data prior to the normal input scan.
IOM - Immediate Output with
Mask
Update outputs prior to the normal output scan. 305
REF - I/O Refresh
Interrupt the program scan to execute the
I/O scan (write outputs, service
communications, read inputs)
IIM
Immediate Input w/Mask
Slot
I:0.0
Mask
N7:0
Length
1
IIM
TIP
This instruction is used for embedded I/O only. It is not designed to be used
with expansion I/O.
Execution Time for the IIM Instruction
Controller
When Rung Is:
True
False
MicroLogix 1400
10.9098 µs
0.2064 µs
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