Merbon process stations

Thanks to modern technologies, Domat offers compact controllers IMIO100 (16 I/O) and ICIO200 (30 I/O) with Ethernet and RS485 in the new range of PLCs, and IMIO105 and ICIO205 with an extra RS485 interface for room units, expanding I/O modules, or 3rd party integration. For larger sites, the markMX with 88 I/O is the right choice. Compact process stations combine the control unit and I/O modules in one housing, which makes installation easier. It is still possible to extend the system with standard I/O modules over the RS485 interface. The Ethernet interface is used for programming and client communication, such as SCADA, web browser, or 3rd party programs.

Process station with no integrated I/Os can be used both in standard control system with I/O modules, and as free programmable protocol converters and communicators. Models with one RS485 port (mark100mark125mark220), with two RS485 and two RS232 ports (mark320), and with integrated M-Bus converter for up to 10 M-Bus slaves (mark150mark150/485) are available. These process stations are perfect for small sites, such as compact heat exchange stations, small home controllers, or heat pump and small AHU controllers.

If a mark220 or mark320 controller is installed in panel door, use the markKit to fix it.

mark320_web

Merbon process station, type mark320.

 

The controllers use different operating systems depending on the processors used in the hardware. ARM® Cortex® with real-time operating system FreeRTOS is used at the smallest platforms (for about 20 to 30 physical datapoints), in the more powerful process stations MPC5200 with OS Linux can be found. Controllers for panel door installation (mark120mark125) feature IP65 protection degree.

All process stations feature a web server for customer visualisation. The web pages are presented in HTML 5 standard, which gives compatibility with all modern browsers. The web pages editor has the same look & feel as the SoftPLC HMI Editor, so the transition to Merbon IDE is seamless.

All controllers also have an Ethernet port which is used for client connections, web access, and configuration. The SSCP protocol, which is used for configuration, programming, and process data communication, is fit for Internet communication because of autentification. It also makes possible to upload new software to the controllers on a remote basis. The controllers also support direct writing into Merbon DB database .

Type

Display

RS232

RS485

I/O

Others

Performance

mark100

no

-

1

-

*

mark120

LCD 4×20

-

-

-

*

mark125

LCD 4×20

1

1

-

larger RAM

**

mark150

no

-

-

15

M-Bus

*

mark150/485

no

-

1

15

M-Bus

*

mark220

LCD 3×16

-

1

-

***

mark320

LCD 3×16

2

2

-

***

markMX

no

2

2

88

***

IMIO100

no

-

-

16

*

IMIO105

no

-

1

16

larger RAM

**

ICIO200

no

-

-

30

*

ICIO205

no

-

1

30

larger RAM

**

Merbon process stations and their performance

To estimate the maximum physial I/O amount for a process station. a following rule of thumb applies:

Performance:

*  - about 30 physical data points
**  - about 100 physical data points
***  - about 400 physical data points.