Every technical device has limited performance. For the MiniPLC, the original “soft” limitation, or rather reccomendation, was maximum 120 HW data points, which gives about 3 MCIO modules plus some binary input modules to reach the required I/O mix. In this configuration, and with application software typical for the normal HVAC plants, there is absolutely no problem with memory capacity, I/O bus response, web server response, computation cycle and other parameters.
Our customers discovered soon that there is some unleashed power in the Mini, and started to challenge the limits. When increasing the amount of I/Os (and corresponding function blocks in the IDE which serve them) it must be considered that the web server response is slower, and the refresh time in the clients (such as IDE, OPC server, and SCADA) increases, but everything keeps running.
However, one of the unsurpassable limits is the amount of communication channels:
- there may be maximum 3 channels of the same type, and
- the total amount must be less or equal 5.
So, if we have a COM port with I/O modules, a SMS modem, and three Native SoftPLC channels to read the link from other process stations, this is exactly the limit.
- the total number of connections the MiniPLC is able to keep is 10.
This includes those max. 5 channels plus incoming connection from the clients like Vision, IDE, touchscreen, external web panel, Native channels from other PLCs (!) etc.
In case you face a MiniPLC not communicating on some of the channels, even if tests in the IDE are OK, please check the amount and types of the communication channels. (The problem may be somewhere else, too, see also http://domat-int.com/forums/topic/miniplc-nekomunikuje-na-com2)
Those limitations do not apply for the Windows platform (Full).
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In 2004, our company had 3 members – its 3 founders. Today we have 5 departments, nearly 50 employees and we are part of the strong CEZ ESCO Group. At the beginning, we only offered two basic PLCs and one software in the Czech Republic. Today, we have countless products, an entire software family and nearly 200 distributors around the world. And none of this happened overnight. Let us remember a little bit what the road has looked like…
Our company will celebrate 15 years on the market this October. During this time Domat developed complex technology consists of PLCs, I/O modules, interface converters and number of field devices and regulators and especially the original software portfolio that pieces all the system out.
We have prepared for you the first batch of symbols for designing in BIM (Building Information Modeling). The libraries are designed for Revit version 2017 and later. There is an automatic upgrade to the newer versions. Components could be found in the 188.8.131.52 classification list (HVAC Controls).
This training will be a basic introduction to the Merbon IDE.
On 30 October, Domat will join forces with the Faculty of Electrical Engineering and Communication in Brno.
This training is marked as an ongoing training to basic Merbon IDE training.