Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
10 Table of Contents
AHL - ASCII Handshake Lines . . . . . . . . . . . . . . . . . . . . . . . 381
ARD - ASCII Read Characters . . . . . . . . . . . . . . . . . . . . . . . . 383
ARL - ASCII Read Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384
ASC - String Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
ASR - ASCII String Compare . . . . . . . . . . . . . . . . . . . . . . . . 387
Timing Diagram for ARD, ARL, AWA, and AWT Instructions . 389
Using In-line Indirection. . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
ASCII Instruction Error Codes . . . . . . . . . . . . . . . . . . . . . . . . 390
ASCII Character Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392
Chapter 22
Communications Instructions Messaging Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393
SVC - Service Communications . . . . . . . . . . . . . . . . . . . . . . 396
MSG - Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398
The Message Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399
Timing Diagram for the MSG Instruction. . . . . . . . . . . . . . . . 407
Communication Servicing Selection and Message Servicing
Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
MSG Instruction Ladder Logic. . . . . . . . . . . . . . . . . . . . . . . . 411
Local Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413
Configuring a Local Message . . . . . . . . . . . . . . . . . . . . . . . . 414
Local Messaging Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 423
Remote Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
Configuring a Remote Message. . . . . . . . . . . . . . . . . . . . . . . 442
Configuring a Multi-hop Remote Message on EtherNet/IP
Communication Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . 445
Configuring a MicroLogix 1400 CIP Generic Message via Ethernet
461
MSG Instruction Error Codes . . . . . . . . . . . . . . . . . . . . . . . . 466
Special Function with MSG instruction . . . . . . . . . . . . . . . . . 468
Configure MSG Setup Screen to send SMTP message. . . . . . . 474
Chapter 23
Socket Interface Using CIP
Generic Messaging
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479
Socket Interface Architecture . . . . . . . . . . . . . . . . . . . . . . . . 479
Communicate With the Socket Object Via a MSG Instruction . 485
Programming Considerations . . . . . . . . . . . . . . . . . . . . . . . . 489
Socket Object Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491
Possible Error Codes for Socket Services . . . . . . . . . . . . . . . . 508
Chapter 24
Recipe and Data Logging RCP - Recipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511
Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 518
Queues and Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 518
Configuring Data Log Queues . . . . . . . . . . . . . . . . . . . . . . . 523
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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