AB 1747-SN Remote I/O Scanner Module Scanning Digital RIO New

The 1747-SN is an Allen-Bradley communication module designed to enable Remote I/O (RIO) communication between devices that support the RIO protocol. These include PanelView graphic operator terminals, message displays, SLC500 controllers, other Programmable Logic Controllers (PLCs), and third-party devices such as gateways and protocol converters. Specifically functioning as a scanner module, it communicates with compatible RIO adapter modules to request I/O status updates, messages, and diagnostics across the RIO network.

The 1747-SN is equipped with one RIO communication port, featuring a 3-pin terminal that requires a specific communication cable (e.g., Belden 9463). For RIO protocol implementation, the maximum physical wire length supported is 3050 meters (1050 feet). It can connect up to 16 devices in normal mode and 32 devices in complementary mode. This scanner module supports data transfer at 57.6 Kbaud over a cable length of 3048 meters, and at 230.4 Kbaud over 762 meters. Devices are connected in a daisy-chain topology, with both ends terminated using an 82-ohm resistor.

The 1747-SN facilitates downloading, uploading, and commissioning of the SLC500 controller, as well as data transfer to connected graphic terminals in the network. It also supports remote I/O passthrough.

Leveraging the node’s extended capability, the 1747-SN transmits information over the communication channel at 57.6 Kbaud across 3048 meters (10,000 feet) and at 230.4 Kbaud across a maximum of 762 meters (2,500 feet), using an 82-ohm terminating resistor. With the node’s non-extended capability, it transmits at the same baud rates (57.6 Kbaud and 230.4 Kbaud) over the same cable distances (3048 meters and 762 meters), but with an 82-ohm, 1/2-watt terminating resistor. It offers four selectable baud rates, which are configured using two DIP switches (Switch 1 and Switch 2).

The 1747-SN operates within a temperature range of 0 to 60 degrees Celsius, at 5 to 95% humidity (non-condensing). Its non-operational temperature range is -40 to 85 degrees Celsius.