Product Description
Allen-Bradley 1770-HT1 Communications Controller
The Allen-Bradley 1770-HT1 is a communications controller designed to interface with RS-232 and Remote I/O (RIO) networks. It supports multiple baud rates and uses Allen-Bradley DF1 and RIO protocols, making it ideal for industrial automation and control systems.
Key Specifications
RS-232 Interface
- Start Bits: 1
- Data Bits: 8
- Parity: None, Even, Odd
- Stop Bits: 1
- Baud Rates: 300, 600, 1200, 2400, 4800, 9600, 19200
- Connector: DB-25P (male)
- Output: RS-232C
- Protocol: Allen-Bradley DF1
Remote I/O (RIO) Interface
- Baud Rates: 57,600 / 115,200 / 230,400 bps
- Rack Size: 1/4 rack
- Connector: Phoenix COMBICON header and plug (3-position)
- Cable Type: Shielded twisted-pair (“blue hose” - Belden 9463)
-
Cable Length:
- 10,000 ft (3,048 m) @ 57.6 kbaud
- 5,000 ft (1,524 m) @ 115.2 kbaud
- 2,500 ft (762 m) @ 230.4 kbaud
- Termination: 150 or 82-ohm resistors (based on baud rate)
- Protocol: Allen-Bradley RIO
Electrical Specifications
- DC Input Voltage: 24V DC ±1% (600 mA max load)
- Fuse: UL 198G and CSA 22.2, No. 59, 5mm x 20mm, 1A, 250V, fast acting
- Connector: Phoenix COMBICON header and plug (3-position, 12-24 AWG)
- Power Consumption: 4.8W max
Physical & Environmental
- Dimensions: 4.3” (10.9 cm) W x 14.0” (35.6 cm) L x 2.7” (6.9 cm) H
- Weight: 1.8 lb (0.8 kg)
- Mounting: DIN Rail (EN 50 022 / EN 50 035)
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Storage Temperature: -40°C to 60°C (-40°F to 140°F)
- Operating Humidity: 5% to 95% (non-condensing)