About 1775-S4AB

The Allen-Bradley 1775-S4AB PLC-3 I/O Scanner-Programmer Interface Module from Series B is an I/O scanner module in the Allen-Bradley PLC-3 family of I/O modules, which provide I/O and RS-232-C communication channels for the Allen-Bradley PLC-3 programmable controllers. The module features 4 high-speed I/O communication channels with up to 2,048 inputs and 2,048 outputs per scanner which communicates with I/O adapter modules, and it also features I/O scan priority, which can the I/O chassis according to a sequence that is programmed by users. The 1775-S4AB is installed on a single slot of the PLC-3 1775-A1 chassis, and it acts as an industrial terminal for programming interface, a backup processor in the case the PLC-3 processor faults, and it can back up to 6 PLC-3 processors for peer-to-peer communication.

The 1775-S4AB provides a compatible RS-232 channel for communicating with industrial terminals to monitor ladder program instructions, monitor data table values, and operate the PLC-3 LIST function. The module has a maximum I/O capacity 2,048 inputs and 2,048 outputs, and it has 4 I/O channels and a single RS-232-C communication channel. The 1775-S4AB module has a maximum transmission rate of Rate 57.6 or 115 baud on each I/O channels, and it has a transmission range of 110 baud to 19.2 KiloBaud on the RS-232-C communication channel. Each I/O channel has a maximum cable length of 10,000 cable feet, and it has a nominal I/O adapter scan times of 5.5 to 6.5ms for 1 channel, 6ms for 2 channels, and 6 to 6.5ms for 4 channels. The 1775-S4AB’s functional temperature range is 0 to 60 °C (32 to 140 °F) at a non-condensing relative humidity of 5 to 95%, and it can be stored at a range of -40 to 85°C (-40 to 185 °F).

Repair Services for 1775-S4AB

Type	Lead Time	Price	Action
Repair Service	2-4 weeks	Ask	Get Quote

Our highly skilled technicians can repair your 1775-S4AB. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Revisions for 1775-S4AB

Please refer to the manual for more information about the 1775-S4AB such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.