Overview
The Square D 8030-CRM-222 /G is a proven remote interface module designed for SY/MAX Class 8030 PLC systems. This used module provides a reliable method to remotely locate both digital and register I/O racks from SY/MAX 300, 400, 500, or 700 processors with serial communication capability.
Key Features
- 8 function digital I/O per module
- Supports two channels per local interface with up to eight channels per channel at maximum
- 255 registers for digital I/O per module
- 127 registers per drop maximum with daisy-chain drop configuration support
- Five indicator lights: RUN, HALT, CHANNEL ERROR, I/O ERROR, and MODULE ERROR for real-time diagnostics
- Compact form factor suitable for legacy SY/MAX system expansions
Technical Specifications
- Input Power: 5VDC
- Current Draw: 1000 mA (1A)
- Module Type: CRM-222 (Remote Interface)
- Series: G
- Digital I/O: 8 function
- Model Line: SY/MAX Class 8030
- Register Capacity: 255 per module
- Certifications: UL listed
Typical Applications
The 8030-CRM-222 /G is commonly used in:
- Legacy SY/MAX automation systems requiring distributed remote I/O
- Factory floor I/O rack extensions and system expansions
- Industrial machine controls with multiple remote input/output stations
- Process automation requiring serial communication between remote and local interface modules
- Retrofit and maintenance of existing SY/MAX 300/400/500/700 processor installations
Compatibility & Replacements
Compatible With
- SY/MAX Class 8030 PLC Processors (300, 400, 500, 700 series)
- SY/MAX local interface modules
- SY/MAX digital and register I/O racks
- Serial daisy-chain network topology
Replaces / Drop-In Replacement For
- Square D 8030-CRM-222 (earlier series versions A, B, C, F)
- Direct replacement in Series G SY/MAX systems
Works With
- SY/MAX Class 8030 system architecture
- Serial remote interface network protocols
- SY/MAX I/O module family (HIM, HOM, ROM, DIM, DOM types)














