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1747-PIC Industrial Communication Interface – Detailed Technical Overview
Product Overview
The 1747-PIC is a programming and communication interface module used in SLC 500 programmable logic controller systems. It is designed to connect a personal computer to SLC 5/01 and SLC 5/02 controllers through a serial communication link, enabling program upload, download, and online monitoring.
This device acts as a bridge between programming software and PLC hardware, making it an essential tool for maintenance, commissioning, and troubleshooting of legacy SLC systems.
It is widely used in industrial environments where older SLC 500 controllers are still operating and require reliable programming access.
Brand Information
| Item | Details |
|---|---|
| Brand | Allen Bradley |
| Product Model | 1747-PIC |
| Product Type | Programming Interface Converter |
| Product Family | SLC 500 Series |
| Series | SLC Communication Accessories |
| Main Function | PC-to-PLC Communication Interface |
| Communication Type | RS-232 to DH-485 conversion |
| Installation Type | External interface cable/device |
Product Series Introduction
SLC 500 System Communication Architecture
The SLC 500 system is a modular PLC platform used in industrial automation applications.
Communication between programming devices and PLC controllers is achieved through specialized interface modules and cables.
The 1747-PIC belongs to the communication accessory family, enabling legacy serial communication between a PC and SLC controllers using DH-485 protocol.
It is especially important in older industrial systems where Ethernet-based communication is not available.
Detailed Technical Specifications of 1747-PIC
| Parameter | Specification |
|---|---|
| Model | 1747-PIC |
| Product Type | Programming Interface Converter |
| Function | PC to PLC communication interface |
| Communication Protocol | DH-485 |
| PC Interface | RS-232 serial port |
| PLC Interface | DH-485 network |
| Supported Controllers | SLC 5/01, SLC 5/02 |
| Software Compatibility | RSLogix / programming tools for SLC |
| Communication Speed | Up to 19.2 kbps (DH-485 standard) |
| Power Supply | Powered via PC serial port |
| Isolation | Basic electrical isolation |
| Cable Length | ~2–3 meters typical |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Dimensions | ~12 × 6 × 2 cm |
| Weight (kg) | ~0.25 kg |
Product Features
1. PC to PLC Communication Bridge
The 1747-PIC converts RS-232 signals from a computer into DH-485 protocol used by SLC controllers.
This enables direct programming and monitoring of PLC systems.
2. Legacy System Compatibility
It is designed specifically for older SLC 5/01 and 5/02 controllers that do not support Ethernet communication.
3. Plug-and-Play Operation
The interface requires no external power supply and operates directly through the PC serial port.
4. Stable Industrial Communication
Provides reliable communication for programming and troubleshooting in industrial environments.
5. Lightweight and Portable Design
The compact structure makes it easy to carry and use in field maintenance applications.
Product Applications
PLC Programming
Used for uploading and downloading PLC programs to SLC controllers.
System Debugging
Allows engineers to monitor real-time PLC operation and diagnose faults.
Industrial Maintenance
Used in servicing and maintaining legacy automation systems.
Commissioning of Machinery
Used during machine setup and configuration of PLC logic.
Legacy Factory Systems
Widely used in older industrial plants still operating SLC 500 systems.
Product Advantages
| Advantage | Description |
|---|---|
| Direct PC Connection | Enables PLC programming from computer |
| Supports Legacy Systems | Works with SLC 5/01 and 5/02 |
| No External Power Required | Powered via serial port |
| Simple Operation | Plug-and-use interface |
| Stable Communication | Reliable DH-485 data transfer |
| Portable Design | Easy field use |
| Cost-Effective Maintenance Tool | Reduces service complexity |
| Industrial Reliability | Suitable for harsh environments |
Recommended Models from Same Series or Related Series
| Model | Product Type | Main Function | Application | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1747-PIC | Interface Converter | PC to PLC communication | SLC programming | 12 × 6 × 2 cm | 0.25 kg |
| 1747-UIC | USB Interface | USB to DH-485 converter | Modern PC connection | 10 × 5 × 2 cm | 0.15 kg |
| 1747-CP3 | Programming Cable | RS-232 programming cable | SLC communication | 200 cm cable | 0.20 kg |
| 1747-CP1 | Communication Cable | DH-485 network cable | PLC networking | 200 cm cable | 0.18 kg |
| 1747-AIC | Interface Module | Advanced interface adapter | Multi-controller systems | 12 × 6 × 3 cm | 0.30 kg |
Recommended Popular Models from Same Brand
| Model | Product Category | Main Features | Application Area | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 1747-L541 | CPU Module | SLC 5/04 processor | Industrial automation | 25 × 17 × 6 cm | 0.45 kg |
| 1747-L542 | CPU Module | High-performance CPU | Distributed systems | 25 × 16.6 × 5.9 cm | 0.40 kg |
| 1747-L551 | CPU Module | Ethernet-enabled CPU | Network automation | 25 × 16.5 × 5.6 cm | 0.42 kg |
| 1756-EN2TR | Ethernet Module | Dual Ethernet/IP ports | Industrial networking | 14 × 11 × 8 cm | 0.45 kg |
| 1769-L33ER | Compact PLC | Built-in Ethernet/IP | Machine automation | 18 × 12 × 9 cm | 0.92 kg |
System Role in Industrial Automation
The 1747-PIC serves as a critical communication bridge between engineering software and SLC PLC controllers.
It enables programming, configuration, and diagnostics of legacy PLC systems that do not support modern communication protocols.
It remains an essential tool for maintaining older industrial automation systems.
Installation and Maintenance Characteristics
The device is connected between a PC serial port and PLC communication port.
No configuration or software installation is required beyond standard PLC programming software.
Maintenance is minimal due to its simple hardware structure.
It is primarily replaced when upgrading to newer communication interfaces such as USB-based converters.
Industrial Reliability
The 1747-PIC is widely used in industrial maintenance environments due to its simplicity and compatibility with legacy PLC systems.
It remains an important tool for engineers working with SLC 500 controllers in existing factories.
Its stable communication performance ensures reliable programming operations in field conditions.
Summary
The Allen Bradley 1747-PIC is a serial communication interface designed for SLC 500 PLC systems.
It enables PC-to-PLC programming and monitoring through DH-485 communication, making it essential for legacy system maintenance.
Its simplicity, portability, and reliability make it a widely used tool in industrial automation support and troubleshooting.