Allen-Bradley MicroLogix 1200 Reference Manual

Publication 1762-RM001C-EN-P
Table of Contents iv
Chapter 15
Sequencer Instructions SQC- Sequencer Compare . . . . . . . . . . . . . . . . . . . . . . . . . 15-2
SQO- Sequencer Output. . . . . . . . . . . . . . . . . . . . . . . . . . . 15-5
SQL - Sequencer Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-8
Chapter 16
Program Control Instructions JMP - Jump to Label. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-1
LBL - Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-2
JSR - Jump to Subroutine . . . . . . . . . . . . . . . . . . . . . . . . . . 16-2
SBR - Subroutine Label. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-3
RET - Return from Subroutine. . . . . . . . . . . . . . . . . . . . . . . 16-3
SUS - Suspend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-4
TND - Temporary End . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-4
END - Program End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-5
MCR - Master Control Reset . . . . . . . . . . . . . . . . . . . . . . . . 16-5
Chapter 17
Input and Output Instructions IIM - Immediate Input with Mask . . . . . . . . . . . . . . . . . . . . 17-1
IOM - Immediate Output with Mask . . . . . . . . . . . . . . . . . . 17-3
REF- I/O Refresh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-4
Chapter 18
Using Interrupts Information About Using Interrupts . . . . . . . . . . . . . . . . . . 18-2
User Interrupt Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 18-7
INT - Interrupt Subroutine . . . . . . . . . . . . . . . . . . . . . . . . . 18-7
STS - Selectable Timed Start . . . . . . . . . . . . . . . . . . . . . . . . 18-8
UID - User Interrupt Disable. . . . . . . . . . . . . . . . . . . . . . . . 18-9
UIE - User Interrupt Enable . . . . . . . . . . . . . . . . . . . . . . . 18-10
UIF - User Interrupt Flush . . . . . . . . . . . . . . . . . . . . . . . . 18-11
Using the Selectable Timed Interrupt (STI) Function File . . 18-12
Using the Event Input Interrupt (EII) Function File . . . . . . 18-17
Chapter 19
Process Control Instruction The PID Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-1
The PID Equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2
PD Data File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2
PID - Proportional Integral Derivative . . . . . . . . . . . . . . . . . 19-3
Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-4
Output Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-7
Tuning Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-8
Runtime Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-16
Analog I/O Scaling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-17
Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-18
Application Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-22

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)