Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
142 Using High-Speed Outputs
structure of the control program determines when the DN bit goes off. So,
to detect when the PTO instruction completes its output, you can monitor
the Done (DN), Idle (ID), or Normal Operation (NO) status bits.
Standard Logic Enable Example
In this example, the rung state is a maintained type of input. This means
that it enables the PTO instruction Normal Operation (NO) and maintains
its logic state until after the PTO instruction completes its operation. With
this type of logic, status bit behavior is as follows:
Stage 0 1 2 3 4 5 6 7 8 9 10 11 12
Rung State
Sub-Elements: Relative Timing
Normal Operation/NO
Accelerate Status/AS
Run Status/RS
Decelerate Status/DS
Enable/EN
Done/DN
Idle/ID
Jog Pulse/JP
Jog Continuous/JC
Start of PTO
Start of PTO
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Allen-Bradley MicroLogix 1400 Specifications

General

Processor	32-bit
Expansion Modules	Up to 7 expansion I/O modules
Power Supply	24V DC or 120/240V AC
Programming Software	RSLogix 500
Communication Ports	Ethernet, RS-232/RS-485 combo port
Controller Type	Programmable Logic Controller (PLC)
Series	MicroLogix
Digital Outputs	12
Analog Inputs	6 (embedded)
Analog Outputs	2 (embedded)
High-Speed Counter	6 high-speed counters
Pulse Output	2 (embedded)
Ethernet Port	Yes