Brand: Allen Bradley Description: Remote I/O Adapter Module Condition: Brand New Certificate: COO TEST REPORT WARRANTY LETTER Warranty: 1 year Inventory Qty: 4 Payment Term: T/T Shipping Port: Shenzhen Allen Bradley 1771-ASB is to connect remote I/O modules to the programmable controller providing both transmit and receive capabilities. It is capable of accepting serial data from I/O scanners and converting the same to parallel for interfacing with I/O modules and converting parallel data to scanners from I/O modules to serial form.
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Manufacture |
Allen Bradley |
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Model Number |
1771-ASB |
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Ordering Number |
1771-ASB |
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Catalog |
- |
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Country Of Origin |
Switzerland |
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HS CODE |
8538900000 |
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Dimension |
12*10*4cm |
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Weight |
0.4kg |
Product Features
Allen Bradley 1771-ASB offers various baud rates to a maximum of 230.4K baud (2,500 feet transmission distance), 115.2K baud (5,000 feet) and 57.6K baud (10,000 feet), and meets the remote communication requirements at different distances.
Allen Bradley 1771-ASB supports serial-to-parallel data conversion, receiving serial data from the scanner and converting it to parallel data for interaction with I/O modules, and vice versa.
Allen Bradley 1771-ASB is suitable for several I/O point types of devices that have 4, 6, 8, 16, as well as 32 points of I/O modules.
Allen Bradley 1771-ASB supports 3 different addressing modes including 2-slot mode, 1-slot shuffle mode, and 1/2-slot mode so that the mode can be chosen that best suits the system provide I/O address allocation management.
Allen Bradley 1771-ASB comes with three diagnostic indicator lights- green ACTIVE (status of operation), red ADAPTER FAULT (fault at the adapter), and red I/O RACK FAULT (fault in I/O rack), which help you to troubleshoot it instantly. Automatically checks I/O assignment on power-up to ensure correct module installation position.
Allen Bradley 1771-ASB can optionally scan all slots or all slots except the last 4 slots, saving scan time and I/O image space without affecting slot power usage.
Allen Bradley 1771-ASB can emulate Series B adapters to meet the response speed requirements of scanners such as the 1771-S4A and 1771-S4B. Supports complementary I/O configurations (for PLC-2 series processors) to enhance system flexibility.
Product Working Principle
Allen Bradley 1771-ASB acts as an intermediary, receiving serial data from the I/O scanner, converting it into parallel data, and sending it to the remote I/O module; simultaneously, it reads parallel data from the I/O module, converts it into serial data, and transmits it back to the scanner, thereby enabling communication between the controller and the remote I/O.
Allen Bradley 1771-ASB sets key parameters via the S1 and S2 switch components, including I/O rack number, starting I/O group number, baud rate, scan mode (full slot/excluding the last 4 slots), and link response mode (Series B simulation or unrestricted), among others.
Product Parameter
The following detail is for Allen Bradley 1771-ASB Remote I/O Adapter Module.
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Parameter Category |
Details |
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Module Location |
Must be installed in the leftmost slot of the 1771 I/O chassis |
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Transmission Distance |
2500 feet at 230.4K baud 5000 feet at 115.2K baud 10000 feet at 57.6K baud |
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Interconnect Cable |
1770-CD |
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Power Consumption |
5W (power dissipation) 17.06 BTU/hr (thermal dissipation) |
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Backplane Current |
1.0A at 5V DC (must be included in the total current requirement of the chassis) |
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Keying Position |
Upper connector: between 54 and 56 Lower connector: between 16 and 18 |
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Environmental Conditions |
Operating temperature: 0-60°C (32-140°F) Storage temperature: -40-85°C (-40-185°F) Humidity: 5%-95% (non-condensing) |
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Field Wiring Arm |
Model 1771-WB, screw torque 7-9 pound-inches, conductor size 20 AWG (stranded copper) |
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Termination Resistor |
82Ω (model 740018-23) or 150Ω (model 1770-XT) |
