Description
The Allen-Bradley 1756-HIST1G is a specialized Historic Machine Edition module designed for integration within the ControlLogix platform. This module provides essential data logging and historical monitoring capabilities, utilizing a dedicated processor architecture to ensure reliable performance in industrial automation environments.
Features
- Integrated Ethernet 10/100T port supporting IEEE 802.3 standards for network communication.
- Equipped with an AMD LX800 500 MHz x86 processor for computational efficiency.
- Features a precision real-time clock for accurate timestamping of historical data.
- Includes 512 Kbytes of battery-backed SRAM and cache memory (128 K L1 / 128 K L2).
- Supports Compact Flash Type 2 storage with DMA capability.
- On-board diagnostic indicators include status LEDs and a 4-character alphanumeric display for quick status verification.
- Internal rechargeable lithium battery (non-removable).
Technical Specifications
| Model |
1756-HIST1G |
| Power Consumption |
5 Watts (7 Watts Max) |
| Processor |
AMD LX800 500 MHz x86 |
| Communication Port |
1x Ethernet 10/100T |
| Memory |
512 Kbytes SRAM (Battery-Backed) |
| Storage |
Compact Flash Type 2 (DMA) |
| Weight |
0.35 kg |
Installation Guidelines
- Ensure the ControlLogix chassis is powered down before inserting or removing the 1756-HIST1G module to prevent electrical damage.
- Verify that the module is fully seated in the chassis slot and secured with the top and bottom latching mechanisms.
- Maintain proper ventilation in the control cabinet; ensure the module is not obstructed by high-heat sources or dense wiring bundles.
- Use shielded Ethernet cabling for the 10/100T port to minimize EMI interference in industrial environments.
- Handle the module using standard ESD (Electrostatic Discharge) protection protocols to prevent damage to sensitive internal components.
FAQ
What is the primary function of the 1756-HIST1G?
This module serves as a Historic Machine Edition component within the Allen-Bradley ControlLogix system, primarily used for data logging and historical record-keeping of machine processes.
Does the module require external power?
The module draws power directly from the ControlLogix backplane. It consumes 5 Watts under normal operation, with a maximum consumption of 7 Watts.
Can the internal battery be replaced?
No, the module features a non-removable, rechargeable lithium battery designed to support the battery-backed SRAM.
