Allen-Bradley micrologix 1500 Reference Manual

Publication 1762-RM001C-EN-P
22-2 Data Logging (MicroLogix 1500 1764-LRP Processor only)
Queues and Records
The 1764-LRP processor has 48K bytes (48 x 1024) of additional memory
for data logging purposes. Within this memory, you can define up to 256
(0 to 255) data logging queues. Each queue is configurable by size
(maximum number of records stored), and by length (each record is 1 to
80 characters). The length and the maximum number of records
determine how much memory is used by the queue. You can choose to
have one large queue or multiple small queues.
The memory used for data logging is independent of the rest of the
processor memory and cannot be accessed by the User Program. Each
record is stored as the instruction is executed and is non-volatile
(battery-backed) to prevent loss during power-down.
Data Files
Function Files
Program Files
1
2
0
3
4 to 255
STI
EII
HSC
PTO
PWM
RTC
3
4
2
5
6 to 255
Q1
Q2
Q0
Q3
Q4 to 255
Specialty Files

Allen-Bradley micrologix 1500 Specifications

General

Brand	Allen-Bradley
Model	micrologix 1500
Category	Controller
Language	English