HUMAN / MACHINE INTERFACE

HMI

	Designed to meet Food Industry Standards
	Sealed to IP65
	Wide Voltage Range (9 to 35) VDC, (110 to 240) VAC
	RS232 & RS485 Compatible
	Fully Programmable with Tools Supplied

We have added the following range of cost effective Human Machine Interface (HMI) terminals to the MEDACS range.

The panels have a back-lit LCD display and are sealed to IP65, making them suitable for use in harsh environments.

A variety of configurations are available, ranging from a relatively simple 2 line by 20 character display with 128 K of flash memory (HMI2L20C) up to one with 8 lines by 40 characters and 512 K flash memory (HMI8L40CX).

Each terminal can talk to a network of MEDACS devices acting as a local Modbus master, collecting data from, and sending data to, various MEDACS slave devices to produce a local system with operator input.

Data can now be exchanged locally between MEDACS devices each of which can have its own devolved intelligence using the TFML feature.

Each HMI unit has a number of dedicated keys which can be allocated to a particular function. The operation is defined within the HMI using the 'Configuration Manager' software supplied and the configuration stored in flash memory.

Some versions are supplied with an in-built BASIC scripting language to offer a greater degree of flexibility in development of the HMI application. This, together with the versatility of TFML, enables multiple MEDACS units to be used together to create a powerful process control system.

The lower cost versions have a single RS232/RS485 port which is used to programme the HMI and then uses the same port to communicate with the MEDACS units, thus enabling the development of a stand alone system.

More sophisticated versions have two ports which can be used to create a system that can communicate with a remote station as well as the MEDACS devices making it suitable for distributed control applications. In this instance, the HMI can act both as a local Modbus master to the MEDACS slaves, and as a remote Modbus slave to SCADA/DCS systems.

The HMI comes complete with a dedicated MEDACS driver which also communicates with the DM3600, enabling front and back of panel instruments to be integrated together in a common system.