Features

• Up to 32 I/O per module
• 512 through 3072 maximum forcible I/O in any mix
• Up to 50,176 maximum non-forcible I/O
• Mechanical keying of the module to the backplane connector
• Optical coupling and filter circuitry for signal noise reduction
• External connections are terminated at a removable wiring arm
• Some modules require remote termination panels (RTPs) for I/O connections

Products

1771 Digital I/O Modules

• Electrical ranges from 5…276V AC or DC
• Relay contact output modules are available for ranges from 0…276V AC or 0…175V DC
• Isolated inputs and outputs on some modules

1771 Analog I/O Modules

• Up to 16-bit resolution
• Thermocouple and RTD modules available
• Software-selectable features include digital filtering and range selection per I/O

1771 Specialty I/O Modules

• Process control modules
• Positioning modules
• Many specialized modules, including high-speed logic
• controller and configurable flowmeter module

1771 I/O Communication Adapter Modules

• Use a 1771 I/O communication adapter module to interface with I/O modules located remote from the PLC-5® controller
• Available for ControlNet™ (including redundant-media) network, Universal Remote I/O link, or Extended Local I/O (on selected controllers)

Certifications

• UL, CSA Class I Div 2 Hazardous, CE, Marine and Offshore Certification, European Union Directives