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
installed controllers or communication adapters and I/O modules in a 1771 chassis. Both chassis-based and stand-alone power supplies are available. They support a range of AC and DC input voltages.