CTI 2576 DeviceNet™ Scanner Module (MATURE)



2576 DeviceNet™ Scanner Module (MATURE)

The 2576 allows a 2500 Series® PLC to read I/O devices on a DeviceNet™ network.

The module provides one DeviceNet™ channel which can attach up to 63 network devices. Multiple modules can coexist in the same I/O chassis.

Features

DeviceNet™ points appear as a standard PLC I/O

RS-232 serial port enables configuration of module and network devices

Front panel LEDs allow monitoring of module and network devices

Built-in power tap can be used to power DeviceNet™ network

Situation:

A French cheese making company running Simatic 505®  and CTI 2500 Series® PLCs had replaced its obsolete Siemens PCS

SCADA system with Wonderware Intouch but found that update times were very slow.

Certain parts of the process had update

times of 10 to 20 seconds making it difficult for plant operators to control the production in an optimized way.

Complication:

Continuous expansion of the plant and an almost continuous production process had led to a complex matrix of interconnected

PLCs and a heavy load on the Ethernet network.

Getting the Wonderware Intouch system up and running had taken a long

time to commission, and the engineering manager was concerned that a replacement of the Ethernet network and/or replacing

PLCs would lead again to a long commissioning time and extended production stops — a huge issue for a plant that cannot

afford to shut down due to food quality regulations and the continuous nature of the production process (e.g., cows don’t stop

giving milk).