Allen-Bradley 1747-L543 SLC 5/04 Processor, 64K Memory, DH+ / RS-232
Allen-Bradley 1747-L543 is an SLC 500 slc 5/04 occupying a single slot of a 1746 I/O chassis, with 64K words of user memory and dh+ + rs-232.
Overview
The processor mounts in a single slot of a 1746 I/O chassis and is powered from the chassis power supply (1746-P1 to 1746-P7). It addresses up to 4096 discrete inputs and 4096 discrete outputs across up to three local chassis (30 slots). User memory is 64K words with battery-backed RAM and a user-replaceable 1747-BA battery. Local analog I/O capacity is 480. Communication is Data Highway Plus (DH+) + RS-232 (DF1); scan times are 0.9 ms/K per Kword for programs and 0.225 ms for I/O, with backplane current draw of Per 1746 chassis power supply loading.
Key Features
- SLC 500 SLC 5/04 – 64K words user memory, single 1746 chassis slot
- 4096 discrete inputs / 4096 discrete outputs; up to 3 local chassis / 30 slots
- Max local analog I/O: 480
- Communication: Data Highway Plus (DH+) + RS-232 (DF1)
- Scan times: 0.9 ms/K program / 0.225 ms I/O; backplane Per 1746 chassis power supply loading
- Battery-backed RAM with user-replaceable 1747-BA battery; 1747-M13 Flash EPROM module backup memory support
- Open-style module, 14 x 3.5 x 14.5 cm (5.5 x 1.4 x 5.7 in)
Technical Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Product Line | SLC 500 |
| Processor Series | SLC 5/04 |
| Part Number / Catalog No. | 1747-L543 |
| UPC | 662468653039 |
| User Memory | 64K words |
| Max. Discrete I/O | 4096 Inputs / 4096 Outputs |
| Communication | Data Highway Plus (DH+) + RS-232 (DF1) |
| Typical Program Scan Time | 0.9 ms/K |
| Typical I/O Scan Time | 0.225 ms |
| Backplane Current Draw | Per 1746 chassis power supply loading |
| Backup Memory | 1747-M13 Flash EPROM module |
| Power Supply | Via 1746 I/O chassis power supply (1746-P1 to 1746-P7) |
| Mounting | 1746 I/O chassis, single slot |
| Dimensions | 14 x 3.5 x 14.5 cm (5.5 x 1.4 x 5.7 in) |
| Weight | 1.31 lbs (0.60 kg) |
| Max. Local Analog I/O | 480 |
Applications
The 1747-L543 is the top-memory 5/04 with 64K words and 480 local analog I/O points, suited to large SLC 500 retrofits – multi-unit process lines and distributed DH+ networks – that need maximum resident program and data tables without changing the chassis platform.
Why Buy from Us
This product is available new in original factory packaging, fully tested and backed by a standard warranty of 1 year. We ship worldwide with careful anti-static packaging and fast dispatch. Quantity discounts and repair/exchange options are available on request.
Documents
| Resource | Title | Link |
|---|---|---|
| Publication | 1747-IN009 — SLC 500 Modular Hardware Style Installation Instructions | 1747-in009_-en-p.pdf |
| Publication | 1747-UM013 — SLC 500 Modular Hardware Style User Manual | 1747-um013_-en-p.pdf |
Certifications
| Certification | Download |
|---|---|
| MOROCCO DOC | slc500-ct008_-fr-e.pdf |
Per the Rockwell Automation product certification listing as of 2026-09-24. Please review the product label to confirm the certifications your specific unit carries.
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