Allen-Bradley MicroLogix 1200 Reference Manual

1 Publication 1762-RM001C-EN-P
Chapter 17
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. 17-1
IOM - Immediate Output with
Mask
Update outputs prior to the normal output scan. 17-3
REF - I/O Refresh Interrupt the program scan to execute the
I/O scan (write outputs, service
communications, read inputs)
17-4
IIM
Immediate Input w/Mask
Slot I:0.0
Mask N7:0
Length 1
IIM
NOTE
This instruction is used for embedded I/O only. It is not
designed to be used with expansion I/O.
Table 17.1 Execution Time for the IIM Instruction
Controller When Rung Is:
True False
MicroLogix 1200 26.4
µ
s 0.0
µ
s
MicroLogix 1500 22.5
µ
s 0.0
µ
s

Allen-Bradley MicroLogix 1200 Specifications

General

Series	MicroLogix 1200
Type	Programmable Logic Controller (PLC)
Mounting	DIN rail or panel mount
Programming Language	Ladder Logic
Programming Software	RSLogix 500
I/O Points	Up to 40
Communication Ports	RS-232, RS-485
Memory	6 KB user memory
Power Supply	24V DC or 120/240V AC
Expansion	Supports expansion I/O modules
Operating Temperature	0°C to 55°C (32°F to 131°F)
Dimensions	90 mm x 110 mm
Weight	0.5 kg (1.1 lbs)