MultiCon and remote data acquisition

The MultiCon line devices offer the possibility of recording many signals - directly from built-in measuring inputs, and from external modules located round the facility. An example of such an application is monitoring the maximum level in thirty-two tanks containing ethyl alcohol.

The application is featured with the following recorder: CMC-141-PS32/E/S24/S8/E-1B1 supported with the SIN-8 binary input modules.

Signal inputs
Four external SIN-8 modules have been used in this application. Each module contains 8 binary inputs that are used to receive signals from 32 level switches placed inside tanks. SIN-8 modules communicate with the CMC-141 recorder via the RS-485 Modbus RTU interface.

Control outputs
The thirty-two SSR outputs (S24 and S8) built into the CMC-141 recorder are connected to an external control system. Each output duplicates the level indicator condition in particular tanks.

Configuration
The CMC-141 recorder receives signals from all SIN-8 module inputs and records their status in its internal memory. The recorded data is downloaded via a USB port placed at the front of the device. A user has a direct view of the process data, locally in the recorder display.