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Allen Bradley 1771-ASB Remote I/O Adapter Module with enhanced diagnostic indicators
Allen Bradley 1771-ASB Remote I/O Adapter Module with enhanced diagnostic indicators
10
000 cable-feet transmission Remote I/O Adapter Module
230.4K baud data transmission RIO Adapter
Place of Origin:
USA
Brand Name:
Allen Bradley
Model Number:
1771-ASB
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Product Details
Product Family:
SLC 500
Connectors:
Wiring Arm 1771-WB
Backplane Current (at 5 Volts):
1.0 Amps
Operating Temperature:
32°F To 140°F (0°C To 60°C)
Storage Temperature:
-40°F To +185°F (-40°C To +85°C)
Backplane Current:
1 MA At 5V Dc
Communication Port:
Remote I/O (RIO)
Lower Connector Keying:
16 To 18
Highlight:
10
,000 cable-feet transmission Remote I/O Adapter Module
,230.4K baud data transmission RIO Adapter
Payment & Shipping Terms
Minimum Order Quantity
1
Price
66USD
Packaging Details
Brand new and original
Delivery Time
2-3 work days
Payment Terms
T/T
Supply Ability
in stock
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Product Description
Remote I/O Adapter Module Overview
The Allen Bradley 1771-ASB Remote I/O Adapter Module serves as a critical interface between remote I/O modules and programmable controllers, enabling efficient industrial automation communication.
Key Features
- Transmits data up to 10,000 cable-feet at 57.6K baud
- Provides faster backplane scanning and data transmission up to 2,500 cable-feet at 230.4K baud
- Receives/sends data from/to the I/O scanner in serial form
- Reads/writes data from/to input and output modules in parallel form
- Supports any mix of I/O (4, 6, 8, 16 or 32 points)
- Supports three methods of I/O addressing: 1/2-slot, 1-slot and 2-slot
- Checks I/O configuration on power-up to verify I/O module placement
- Scans all slots in the chassis, or all but the last four slots, allowing improved scan time and I/O image space savings
- Can emulate series B adapters for compatibility with 1771-S4A and -S4B scanners
- Enhanced diagnostic indicators for easier troubleshooting
Series Comparison & Specifications
| Feature | Series A | Series B | Series C | Series D | Series E |
|---|---|---|---|---|---|
| Functional Changes | Initial release | Firmware change | Hardware and firmware change | Firmware change, Added CE certification | Hardware change, Added C-Tick certification |
| Restrictions / Limitations | Supports only 1 or 2 slot addressing | Supports 1/2, 1 or 2 slot addressing | |||
| Hardware Compatibility | Does not support 32-bit digital I/O | Does support 32-bit digital I/O | Does support 32-bit digital I/O, Can emulate Series B adapter | ||
| Communication Rate | 57.6 kbits/s, 115.2 kbits/s | 57.6 kbits/s, 115.2 kbits/s, 230.4 kbits/s | |||
| Certifications | CSA Hazardous Class I, Div 2 | CSA Hazardous Class I, Div 2 | CE | CE | C-Tick |
| Backplane Current | 1.2 A @ 5V DC | 1.0 A @ 5V DC | |||
| Chassis Distance | 5,000 ft @ 115.2 kbits/s, 10,000 ft @ 57.6 kbits/s | 5,000 ft @ 115.2 kbits/s, 10,000 ft @ 57.6 kbits/s, 2,500 ft @ 230.4 kbits/s | |||
| Thermal Dissipation | 20.47 BTU/hr | 17.06 BTU/hr | |||
| Power Dissipation | 6W | 5W | |||
Frequently Asked Questions
What happens to my inputs and outputs when an adapter communication failure occurs?
On a communication failure, inputs in this rack will appear in the processor input image table in the last state they were reported to be in before the failure. Outputs in this rack will either remain in their last state or be turned off, depending on the I/O chassis backplane switch setting for output last state.
Is there a way to monitor my remote rack status and take appropriate action if there is a rack fault or a communication failure?
Yes. Processor rack fault bits can be monitored. Communication failure can be detected by monitoring the program's block transfer error bit. A diagnostic step array and timer can be programmed to monitor the status of changing digital inputs. In all cases, the appropriate action can be taken, i.e., program a fault routine.
I just replaced my series B adapter with a series E adapter, and now my block transfers are timing out (block transfer error code ±9). What's wrong?
Certain scanner modules require series B emulation which includes a delay to provide the scanner sufficient time to service all of its communication ports. If you are using a 1772-SD2, 1775-S4, 1775-S4A, 1775-S5, 1775-SR5 or 1775-SR scanner, set the link response for unrestricted or series B emulation (switch S2, position 5 on).
I'm replacing an existing PLC-2 remote I/O system with new PLC-5 processors. Will the new processors work with the older 1771-ASB adapters?
Again, any processor will work with any series/revision remote I/O adapter. Watch your switch settings. Old power supplies can be used to power your adapters, but cannot be used to power the rack containing a PLC-5 processor. PLC-5 processors must be powered by slot power supplies or by a 1771-P7 supply.
Specifications for my processor state that it can support 24 logical racks, but it won't accept any rack addresses over rack 17 (16 physical racks).
This is a processor limitation. Each RIO channel is limited to 16 logical racks which can be scanned by the channel. The additional racks can be scanned on another RIO channel, if practical.
How do I add a 1771-ASB adapter module to my ControlLogix remote I/O network?
Simply add the adapter under the 1756-DHRIO scanner in the Logix5550 Controller Organizer I/O configuration tree. With the scanner, adapter and chassis switches set correctly, download the program to the Logix5550 processor and switch to Run mode. Communication to the adapter will commence.
About Amikon - Your Industrial Automation Partner
Back in 2005, we started Amikon in Hong Kong with a simple idea: Machines shouldn't die just because a part is "obsolete."
Two decades later, that idea has turned us into a global lifeline for manufacturers. We don't just sell boxes; we extend the life of your systems. When the OEM stops making it, we start stocking it.
Our Product Range (Ready Stock)
- The Brains: PLCs & Panel Controllers
- The Interface: HMIs & Industrial PCs
- The Muscle: VFD Components
- The Logic: Distributed Control Systems (DCS)
As we celebrate our 20th Anniversary, our motto remains the same as day one: "We keep global production running."
Let's keep your plant moving.
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