1TNE968900R1100 is PM573-TP high-end CPU of ABB AC500-eCo PLC family with pluggable terminal block. It is high specification main controller for medium and large automation systems, used for cabinet configuration and obsolete automation spare replacement.

1TNE is unified part prefix for ABB AC500 PLC spare coding. 968900 is base hardware specification of PM573 platform. Suffix R1100 stands for factory standard plug-in terminal version with commercial name PM573-TP.

DC24V rated power input, program memory 512kB, data memory 256kB. Onboard 8-channel digital input and 6-channel transistor digital output with 0.5A per channel load. DIN rail mounting, operating ambient temperature 0℃~+55℃, storage temperature -25℃~+70℃, IP20 protection grade for cabinet installation.

Built-in 10/100Mbps Ethernet port and one RS485 serial port supporting Modbus RTU, CS31, ASCII protocols. Two expansion slots for optional communication modules, compatible with S500/S500-eCo series I/O expansion modules.

Run user programs programmed via Control Builder in LD, ST, FBD, SFC languages. Collect field discrete signals to realize equipment interlock, sequential control and closed-loop regulation. Upload operation data and fault records to upper HMI and DCS through Ethernet or serial bus, support SD card program backup and firmware upgrade, maximum expandable total I/O up to 1024 points.

Deployed for medium-large wastewater treatment plant, centralized pump & fan control, full automatic production line and medium-sized process industry automation, matched with ABB low voltage devices to build complete control system.

Disconnect DC24V power before module dismounting or wiring change. Conduct quarterly maintenance to clear dust with dry compressed air and check terminal fastening. Regularly back up project program to SD card. Inspect communication cable and field circuit first before module replacement when abnormal communication occurs.