Allen-Bradley micrologix 1500 Reference Manual

Publication 1762-RM001C-EN-P
20-28 ASCII Instructions
Timing Diagram for ARD,
ARL, AWA, and AWT
Instructions
12 6 345 1 5 263 4
Rung Condition
Enable Bit (EN)
Queue Bit (EU)
Running Bit (RN)
Done Bit
Error Bit
(DN or ER)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
1 - rung goes true
2 - instruction successfully queued
3 - instruction execution complete
4 - instruction scanned for the first time after execution is complete
5 - rung goes false
6 - instruction execution starts

Allen-Bradley micrologix 1500 Specifications

General

Processor Type	16-bit
Programming Language	Ladder Logic
Mounting	DIN rail or panel mount
Programming Software	RSLogix 500
Communication Ports	RS-232
Power Supply	24V DC
Operating Temperature	0°C to 55°C (32°F to 131°F)
Controller Type	Programmable Logic Controller (PLC)