Remote I/O Adapter Modules | Allen-Bradley 1771-AR
The Allen-Bradley 1771-ARC is a dedicated remote I/O adapter module designed for Bulletin 1771 and PLC-5 control system architectures. It interfaces a remote 1771 I/O chassis with a central PLC-5 processor over a Remote I/O (RIO) network link. The module enables long-distance signal distribution, supporting communication cabling spans up to 5000 feet (1524 meters).
Signal Processing and System Interface
The module acts as a communication bridge within the remote I/O chassis, gathering discrete and analog output status data from the master controller while reading and transmitting input status back to the PLC-5 processor. Occupying two module slots in the 1771 I/O rack, it continuously monitors system status and provides real-time diagnostics via front-panel LED indicators.
Mechanical Installation and Power Specifications
The 1771-ARC installs directly into the backpanel slot of a Bulletin 1771 expansion rack. It draws a maximum backplane current of 900 mA at 5 VDC. Internal mechanical keying pins prevent incorrect module insertion, ensuring proper alignment across backplane connections.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-ARC |
| Brand | Allen-Bradley |
| Product Type | Remote I/O Adapter Module |
| Backplane Current | 900 mA at 5 VDC |
| System Compatibility | PLC-5 / Bulletin 1771 Control Systems |
| Max Transmission Cable Distance | 5000 ft (1524 m) |
| Slot Width | 2 Slots |
| Mounting Type | Backpanel / Chassis Mount |
| Operating Temperature | 0 deg C to 60 deg C |
| Storage Temperature | -40 deg C to 85 deg C |
| Weight | 1.81 lbs (0.82 kg) |
Frequently Asked Questions
Q: What is the primary function of the 1771-ARC module? A: It links a remote Bulletin 1771 I/O chassis to a central PLC-5 controller over a Remote I/O network link to facilitate distributed data transfer.
Q: What is the maximum cable distance supported by the 1771-ARC? A: The module supports Remote I/O cable runs extending up to 5000 cable feet from the central processor.
Q: How many chassis slots does the 1771-ARC occupy? A: The 1771-ARC is a double-slot module requiring 2 adjacent slots in a 1771 chassis.
Remote I/O Adapter Modules | Allen-Bradley 1771-AR
Remote I/O Adapter Modules | Allen-Bradley 1771-AR
The Allen-Bradley 1771-ARC is a dedicated remote I/O adapter module designed for Bulletin 1771 and PLC-5 control system architectures. It interfaces a remote 1771 I/O chassis with a central PLC-5 processor over a Remote I/O (RIO) network link. The module enables long-distance signal distribution, supporting communication cabling spans up to 5000 feet (1524 meters).
Signal Processing and System Interface
The module acts as a communication bridge within the remote I/O chassis, gathering discrete and analog output status data from the master controller while reading and transmitting input status back to the PLC-5 processor. Occupying two module slots in the 1771 I/O rack, it continuously monitors system status and provides real-time diagnostics via front-panel LED indicators.
Mechanical Installation and Power Specifications
The 1771-ARC installs directly into the backpanel slot of a Bulletin 1771 expansion rack. It draws a maximum backplane current of 900 mA at 5 VDC. Internal mechanical keying pins prevent incorrect module insertion, ensuring proper alignment across backplane connections.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-ARC |
| Brand | Allen-Bradley |
| Product Type | Remote I/O Adapter Module |
| Backplane Current | 900 mA at 5 VDC |
| System Compatibility | PLC-5 / Bulletin 1771 Control Systems |
| Max Transmission Cable Distance | 5000 ft (1524 m) |
| Slot Width | 2 Slots |
| Mounting Type | Backpanel / Chassis Mount |
| Operating Temperature | 0 deg C to 60 deg C |
| Storage Temperature | -40 deg C to 85 deg C |
| Weight | 1.81 lbs (0.82 kg) |
Frequently Asked Questions
Q: What is the primary function of the 1771-ARC module? A: It links a remote Bulletin 1771 I/O chassis to a central PLC-5 controller over a Remote I/O network link to facilitate distributed data transfer.
Q: What is the maximum cable distance supported by the 1771-ARC? A: The module supports Remote I/O cable runs extending up to 5000 cable feet from the central processor.
Q: How many chassis slots does the 1771-ARC occupy? A: The 1771-ARC is a double-slot module requiring 2 adjacent slots in a 1771 chassis.
