Allen-Bradley MicroLogix 1200 Reference Manual

Publication 1762-RM001C-EN-P - November 2000
Summary of Changes 5
New Information
The table below lists sections that document new features and
additional information about existing features.
For This New Information See
Added MicroLogix 1200 1762-L24BXB and 1762-L40BXB Controllers Chapter 1, 5, 6
Added configuration information for several new I/O modules:
•
1762-IQ16, -OA8, -OB8, -OB16, -OW16, -IF4
•
1769-OB16P and -IT6
Chapter 1
Added section on Configuring Expansion I/O Using RSLogix 500 Chapter 1
Made minor changes to clarify data file numbering. Chapter 2
Modified section on Writing Data to the Real-Time Clock Chapter 3
In the Communications Status File, General Channel Status Block, Bit 15,
the Comms Toggle Push Button Bit, is now valid for MicroLogix 1200 and
MicroLogix 1500 (previously was only the MicroLogix 1500).
Chapter 3
Added IMPORTANT notes about using the High-Speed Counter (HSC). Chapter 5
Added IMPORTANT notes about using the High-Speed Outputs (PTO and
PWM).
Chapter 6
Modified text that describes the PWM Accel/Decel Delay (ADD)
parameter.
Chapter 6
Added PTO Controlled Stop (CS) parameter (MicroLogix 1500 only). Chapter 6
Modified text that describes the Scale (SCL) instruction. Chapter 10
Corrected text for the PID Reset Term (Ti). The last sentence now reads:
“A value of 1 adds the maximum integral term into the PID equation.”
(previously said that “a value of 1 adds the minimum integral term...”)
Chapter 19
MicroLogix 1200 Series B Controllers can use the entire set of ASCII
instructions
Chapter 20
Added section on Programming ASCII Instructions with information on
how to prevent communications shut-down when using ASCII
instructions.
Chapter 20
Added Ctrl-characters to the ASCII Character Set chart. Chapter 20
Added MSG File Element description. Chapter 21
The ASCII String Manipulation Error bit (S:5/15) now applies to
MicroLogix 1200 Series B Controllers as well as the MicroLogix 1500.
Appendix C
Added Fault Classification (non-user, recoverable, non-recoverable) to the
Fault Messages troubleshooting table.
Appendix D
Added new Error Code:
001A - User Program Incompatible with OS at Power-Up
Appendix D
Added alphabetical list of instructions for easy reference. Inside Back
Cover
ASCII Protocol can be used by MicroLogix 1200 Series B Controllers as
well as the MicroLogix 1500.
Appendix E
Updated Instruction Execution Times Appendix A
and B, and
throughout
manual

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)