Allen-Bradley MicroLogix 1200 Reference Manual page 12

Table of Contents vi
Data Logging
(MicroLogix 1500 1764-LRP
Processor only)
MicroLogix 1200 Memory
Usage and Instruction
Execution Time
MicroLogix 1500 Memory
Usage and Instruction
Execution Time
System Status File
Fault Messages and Error
Codes
Protocol Configuration
Publication 1762-RM001C-EN-P
Chapter 22
Queues and Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-2
Configuring Data Log Queues . . . . . . . . . . . . . . . . . . . . . . 22-6
DLG - Data Log Instruction. . . . . . . . . . . . . . . . . . . . . . . . . 22-8
Data Log Status File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-9
Retrieving (Reading) Records . . . . . . . . . . . . . . . . . . . . . . 22-11
Accessing the Retrieval File . . . . . . . . . . . . . . . . . . . . . . . 22-11
Conditions that Will Erase the Data Retrieval File . . . . . . . 22-13
Appendix A
Programming Instructions Memory Usage and Execution Time A-1
MicroLogix 1200 Scan Time Worksheet . . . . . . . . . . . . . . . . . A-7
Appendix B
Programming Instructions Memory usage and Execution Time B-1
MicroLogix 1500 Scan Time Worksheet . . . . . . . . . . . . . . . . . B-6
Appendix C
Status File Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Status File Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Appendix D
Identifying Controller Faults . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Contacting Rockwell Automation for Assistance. . . . . . . . . . . D-9
Appendix E
DH-485 Communication Protocol . . . . . . . . . . . . . . . . . . . . . E-2
DF1 Full-Duplex Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . E-5
DF1 Half-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . E-6
Modbus™ RTU Slave Protocol . . . . . . . . . . . . . . . . . . . . . . . E-9
ASCII Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-13
Glossary
Index
MicroLogix 1200 and 1500 Alphabetical List of Instructions