1.Introduction
In the Gira door communication system, during start-up the devices are made known to each other through the assignment procedure.
In normal operation of the Gira door communication system, it is not important to know which bus device sends or which bus information is exchanged between the devices. The use of the DCS IP gateway in conjunction with the Gira HomeServer means that the transmitted bus information gains in importance as the HomeServer can assign functions of the KNX to individual actions of the door communication system.
In addition to the KNX functions, other functions of the HomeServer can also be controlled (e.g. entry of an authorised person in the message archive).
In normal operation of the Gira door communication system, it is not important to know which bus device sends or which bus information is exchanged between the devices. The use of the DCS IP gateway in conjunction with the Gira HomeServer means that the transmitted bus information gains in importance as the HomeServer can assign functions of the KNX to individual actions of the door communication system.
In addition to the KNX functions, other functions of the HomeServer can also be controlled (e.g. entry of an authorised person in the message archive).
2.Identification of the door communication telegrams
The door communication telegrams can be identified in two ways for later use in the HomeServer.
- Option (cheat sheet of the DCS IP gateway)
During the start-up of the DCS IP gateway, all the call buttons (e.g. ringing the bell at the front door) are made known to the DCS IP gateway. With this process the installer assigns freely selectable names to the previously pressed buttons.
The assignments of the bus address and the call button are provided for further processing in the logic of the HomeServer in a document, the so-called cheat sheet.
- Option (visualisation project of the HomeServer)
Some bus telegrams such as sample switching actions of KeylessIn devices are not taught in in the DCS IP gateway.
These bus telegrams can be displayed analysed in a visualisation project (DCS_IP_GW_sample project) of the HomeServer on the visualisation page "Basic parameters", so that they can then be processed in the logic nodes.
3.DCS logic nodes of the HomeServer
The HomeServer receives all communication of the bus system via the DCS IP gateway. The logic nodes are divided into two general functions. There are receiving modules which filter the bus information. The bus telegrams of a door station contain the following information:
- Bus address
- Module address
- Button number
4.Application examples
4.1.Switch on light
The light in the entrance area should switch on automatically if any button of the door station is pressed.
For this application the filter is only set to the bus address of the door station. Therefore, if any button of the door station is pressed, the corresponding logic node triggers the KNX function "Switch on light".
For this application the filter is only set to the bus address of the door station. Therefore, if any button of the door station is pressed, the corresponding logic node triggers the KNX function "Switch on light".
4.2.Signal door call with light
In the home of a deaf person, a light source is intended to visually implement the doorbell.
In this case, in addition to the bus address of the door station, the module address and button number must be filtered, so that only the pressed door station call button of the selected apartment is evaluated.
In this case, in addition to the bus address of the door station, the module address and button number must be filtered, so that only the pressed door station call button of the selected apartment is evaluated.
5.Application examples from the DCS brochure
5.1.Time-controlled access control
The cleaning staff is only granted access to the building on certain days of the week and at certain times. The Gira Keyless In Keypad opens the door when a personal number combination is entered. Access is denied outside the defined periods.
5.2.Access at any time
A resident is granted access to the building at any time by entering his personal number combination in the Gira Keyless In Keypad.
Any other switching processes in the home can be linked to opening the door. Programming is simple using the Gira Control 9 and Gira Control 19 control devices or on the computer.
Any other switching processes in the home can be linked to opening the door. Programming is simple using the Gira Control 9 and Gira Control 19 control devices or on the computer.
5.3.One-time access
The courier wants to deliver a package, but no one is in the building. The recipient can be contacted by mobile phone. The recipient then creates a universal code with one-time validity using his phone and sends it to the courier by text message. After the number combination is entered, the Gira KeylessIn keypad opens the door. Access is denied if this code is entered a second time.
5.4.Controlling access to areas
In a company, a certain area such as the development department should only be accessible to a defined group of people. These people are given a transponder key or a transponder card for this. Access is controlled by the Gira KeylessIn Transponder with long-range transponder technology. The reader reacts to the signal of the active transponder key or transponder card – already at a distance of approx. 1.5 m to the door, depending on the setting. Up to 250 keys or cards per Transponder device can be managed. The keys or cards are assigned to the readers once when starting up the system.