Products Description
Allen‑Bradley 1747-L553 A SLC 5/05 PLC Processor Module in stock
Allen‑Bradley 1747-L553 A is the high-performance SLC 5/05 CPU processor for Rockwell SLC 500 PLC platform, equipped with 64K user memory. It integrates 10/100Mbps Ethernet and RS232 serial ports for programming, HMI connection and industrial networking.
This legacy controller supports RSLogix 500 ladder logic programming and works with 1746 series I/O chassis. Rockwell has discontinued this model, and it is mainly supplied as maintenance spare parts for existing old automation production lines.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | Allen‑Bradley (Rockwell Automation) |
| 2 | Model | 1747-L553 A |
| 3 | Module Type | SLC 5/05 PLC Processor / CPU Module |
| 4 | User Memory | 64K words (program & data memory) |
| 5 | Communication Ports | 10/100 Ethernet + RS232 serial port |
| 6 | Programming Software | RSLogix 500 |
| 7 | Compatible Chassis | 1746 series I/O chassis |
| 8 | Status | Discontinued, only for spare replacement |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Execute ladder logic control program, process logic calculation and control all 1746 I/O modules on backplane |
| 2 | Ethernet port for remote programming, HMI connection and multi-PLC networking on factory LAN |
| 3 | RS232 serial port for local program upload/download and direct connection with programming PC |
| 4 | Built-in LED status indicators to show run, fault, communication and battery alarm status |
| 5 | Support battery backup to retain program and data when power supply is cut off |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Legacy SLC500 PLC control cabinet for manufacturing and assembly production lines |
| 2 | Water treatment, oil & gas, metallurgy old industrial automation control systems |
| 3 | Packaging, textile, printing machinery original SLC 500 control equipment |
| 4 | On-site spare parts replacement and emergency maintenance for existing SLC500 systems |
| 5 | Factory system retrofit, before migration to CompactLogix platform |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q:What is the difference between 1747-L553 and 1747-L552? A:1747-L553 has 64K memory while L552 only has 32K memory, both are SLC5/05 CPU with Ethernet and RS232 ports. |
| 2 | Q:Which software is used to program this processor? A:RSLogix 500 software, ladder logic programming language, compatible with 1746 series I/O modules. |
| 3 | Q:Is this product still in production? A:Rockwell has discontinued this model. It is only used as spare parts for maintaining old SLC500 systems, not recommended for new projects. |
