Overview & Function
The 1775-S5 is a communication module specifically designed for Allen-Bradley PLC-5 systems. It enables reliable data exchange between the PLC and peripheral devices, facilitating efficient system monitoring, control, and diagnostics. Its rugged design ensures stable operation in industrial environments while minimizing electrical noise interference.
Featuring a compact design, the module integrates seamlessly into existing PLC-5 racks, making it suitable for both system upgrades and maintenance applications.
Key Advantages
High-speed communication with PLC-5 controller
Low-noise, optically isolated input/output channels
Compact design reduces control cabinet space requirements
Supports system diagnostics and monitoring
Typical Application Areas
Factory Automation Networks
Material Handling Systems
Machine Automation and Assembly Lines
Process Monitoring and Distributed I/O Networks
PLC-5 Retrofitting and Legacy PLC-5 Installation
Engineering Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Allen-Bradley |
| Model Number | 1775-S5 |
| Module Type | PLC-5 Communication Interface |
| Compatible PLC | PLC-5 Series |
| Communication Protocol | Serial/Backplane |
| Isolation | Optical isolation for all I/O channels |
| Power Requirements | 5 VDC, typical current < 250 mA |
| Mounting | PLC-5 rack slot |
| Operating Temperature | 0°C – 55°C |
| Humidity | 5–95% RH, non-condensing |
| Indicators | LED for power, status, and fault |
| Dimensions | Standard PLC-5 module footprint |
Installation & Operation Guidelines
Power down the PLC-5 system before inserting the module.
Slide the module into the appropriate rack slot and secure firmly.
Connect communication cables following system schematics.
Power up the system and verify communication via status LEDs and PLC diagnostics.

Frequently Asked Questions
Can the 1775-S5 be used with newer PLC models?
It is designed specifically for the PLC-5 series. Integration with newer PLC series may require a protocol converter.
What protection features does this module have?
Optically isolated channels protect against electrical noise and transient interference.
How do I identify a faulty module?
Check the status indicator lights; a persistent fault indicator light usually indicates that the module needs to be replaced.
Is this module suitable for high-speed applications?
Yes, within the backplane bandwidth range, it supports real-time data transmission for most PLC-5 operations.
Why Partner With Us
in one-stop service
As a global supplier of industrial automation spare parts, PLC Export serves customers in more than 160 countries across Europe, the Americas, Asia-Pacific, and the Middle East. Our business continues to expand alongside global industrial development, with a strong focus on emerging manufacturing markets.
We maintain a large and diversified inventory of automation components, including many discontinued and hard-to-source parts. With established partnerships across the global supply chain, we support fast dispatch, international shipping, and consistent availability.

Check Stock & Pricing
Sales Manager: Lydia
📧 Email: sales3@mooreplc.com
📱 WhatsApp: +86 180 2071 4662
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