Micrologix 1400 Controllers Ab 1766 – Allen Bradley

With a maximum of 20 digital inputs and 12 digital outputs, the MicroLogix 1400 Allen Bradley series of compact programmable logic controllers may serve industrial applications, while some analog models feature 4 analog inputs and 2 analog outputs. The MicroLogix 1400 PLCs themselves offer this basic arrangement, but the processors can support up to 7 separately ordered 1762 extension I/O modules at any given time. The PLCs also include three communication ports: one RS232C/RS485 isolated combination port, one RS232C non-isolated port, and one RJ45 connecting connection for Modbus TCP/IP, EtherNet/IP peer-to-peer messaging, and DNP3 over IP.
Users of Allen Bradley PLC MicroLogix 1400 can graphically adjust their view of the data stored in tables in the module memory by enabling the Webserver capabilities across the Ethernet port. The devices have 128 KB of memory (without a recipe) and up to 64 KB of memory (after eliminating data recording) for this function. Non-volatile RAM is the memory available to users in PLCs. User applications have 10 KB of memory designated for them, and 10 KB of memory is user-configurable data space. For ultimate operational safety, the devices also contain a battery backup.