Allen-Bradley 1794-ASB2 Remote I/O Adapter

FAQ

Q1. What is the main function of the 1794-ASB2?
It is a FLEX I/O Remote I/O adapter used to connect small FLEX I/O systems to a PLC via Remote I/O communication.

Q2. How many I/O modules can it support?
It supports up to 2 FLEX I/O modules per adapter.

Q3. What communication protocol does it use?
It uses the Allen-Bradley Remote I/O (RIO) protocol.

Q4. What is the communication speed range?
It supports 57.6 kbps, 115.2 kbps, and 230.4 kbps selectable baud rates.

Q5. What is the power requirement?
It operates on a 24 VDC supply with an input range of 19.2 to 31.2 VDC.

Q6. What is the purpose of the internal FlexBus power?
It provides 5 VDC backplane power (up to 640 mA) to support connected FLEX I/O modules.

Q7. What are its physical size and weight?
It measures approximately 8.7 × 9.4 × 9.2 cm and weighs about 0.20–0.25 kg.

Q8. What applications is it typically used for?
It is used in legacy industrial automation systems to extend PLC I/O over Remote I/O networks in compact distributed configurations.

1794-ASB2 Allen Bradley

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