Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
Table of Contents 11
DLG - Data Log Instruction . . . . . . . . . . . . . . . . . . . . . . . . . 525
Data Log Status File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 526
Retrieving (Reading) Records . . . . . . . . . . . . . . . . . . . . . . . . 528
Accessing the Retrieval File. . . . . . . . . . . . . . . . . . . . . . . . . . 529
Conditions that Will Erase the Data Retrieval File. . . . . . . . . . 532
Chapter 25
LCD - LCD Information LCD Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 533
LCD Function File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 534
LCD Function File Sub-Elements Summary . . . . . . . . . . . . . . 535
LCD Function File Sub-Elements . . . . . . . . . . . . . . . . . . . . . . 536
LCD - LCD Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 542
Appendix A
MicroLogix 1400 Memory
Usage and Instruction
Execution Time
Programming Instructions Memory usage and Execution Time 545
MicroLogix 1400
Scan Time Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550
Appendix B
System Status File Status File Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 552
Status File Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 553
Appendix C
Fault Messages and Error
Codes
Identifying Controller Faults . . . . . . . . . . . . . . . . . . . . . . . . . 577
Contacting Rockwell Automation for Assistance. . . . . . . . . . . 585
Appendix D
Protocol Configuration DH-485 Communication Protocol . . . . . . . . . . . . . . . . . . . . 588
DF1 Full-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . 592
DF1 Half-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 593
DF1 Radio Modem Protocol . . . . . . . . . . . . . . . . . . . . . . . . . 604
Modbus RTU Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 611
ASCII Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 623
Ethernet Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625
Appendix E
Knowledgebase Quick Starts # 17444 “Quick Start” Pulse Train Output (PTOX) . . . . . . . . . 629
# 17446 “Quick Start” Pulse Width Modulation (PWMX). . . . . 632
# 17447 “Quick Start” High Speed Counter (HSC) . . . . . . . . . 634
# 17465 “Quick Start” Message (MSG) . . . . . . . . . . . . . . . . . . 638
# 17501 “Quick Start” Selectable Timed Interrupt (STI). . . . . . 642
# 17503 “Quick Start” Real Time Clock (RTC) . . . . . . . . . . . . 644
# 17558 “Quick Start” User Interrupt Disable (UID) . . . . . . . . 646
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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