1785-L80B PLC5 Processor

Description

The Allen-Bradley 1785-L80B is a Programmable Logic Controller (PLC) from the PLC-5 series. It is part of the enhanced PLC 5 range and primarily features an embedded memory of 100,000 Words which is capable of accommodating up to 3072 I/O of any mix or 3072 input and 3072 outputs when operating in complimentary mode.

1785-L80B

The 1785-L80B is designed with multiple communication interfaces which can be used simultaneously to communicate to different automation devices. It has four (4) DH+/Remote I/O (Adapter or Scanner) labelled as CH1A, CH1B; CH2A and CH2B; one (1) serial port configurable for RS-232 and RS-422A electrical standard supporting DF1 protocol, and two (2) programming terminals. The 1785-L80B is able to communicate up to 93 I/O chassis and up to 32 Remote I/O (RIO) rack.

Enhanced PLC 5 controllers such as the 1785-L80B are mainly used when the control system requires communication to a large number of Remote I/O (RIO) devices as well as connectivity to a large number of Data Highway Plus (DH+) devices.

For installation, the 1785-L80B may be installed in 1771-A1B, 1771-A2B, 1771-A3B, 1717-A3B1, and 1771-A4B PLC5 chassis. Supported power supplies by this processor include the 1770-P1, 1770-P45, 1770-P5, 1771-PE, 1771-P4S1, 1771-P6S1, 1771-P4R, and 1771-P6R.

It is also used to configure I/O modules and extension racks.

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