Mark Interface+ Technisches Handbuch Seite 5

1.3.3
Connection: maximum 8 G(S)+ units, Optitherm+ and Interface+
The current status of the devices can be read using Modbus. In addition, the setpoints of the
Optitherm+ can be changed and the clock program can be overruled. Reset of the units is possible
with the Optitherm+. Optionally, the actual room temperature can be determined with a digital
sensor, on the basis of which it is controlled. The Optitherm+ can then be placed in an additional
room (see for sensor selection the Optitherm+ manual).
See connection diagram 4.3 for the specific connections for this application.
Explanation of specific Modbus holding registers for this application:
Holding register
201*
202
220
221
222
223
133**
* In case after an override (1-5) you want to return to the clock program of the Optitherm+,
0 must be written. Modifying this is not possible in the Optitherm+ menu.
** In this application CH mode must be set to 7 (default setting)
*** Holding registers 122, 204 and 205 do not operate in this application.
1.3.4
Connection: maximum 8 GSX units and Interface+
With an Interface+, one or more GSX units, with a maximum of 8, can be controlled from, for
example, a building management system. All contacts are in this case potential free. The connected
GSX units are controlled simultaneously by means of the following signals: heating, ventilation and/
or reset. When an air heater is malfunctioning or in operation, a notification is given by means of a
potential free contact. The actual status of the units can be read using Modbus.
See connection diagram 4.4 for the specific connections for this application.
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Reading G(S)+ units and modifying or overruling settings Optititherm+
Access Description
R + W Heating mode override
R + W Ventilation mode
R + W Day Setpoint temperature
R + W Eco Setpoint temperature
R + W Night Setpoint temperature
R + W Frost
R + W CH mode
Control with contacts (only for GSX units))
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Range
0= clock program Optitherm+
active
1= off
2= Continuous frost
3= Continuous night
4= Continuous Eco
5= Continuous day
0 = off
1 = continuous system fan
[°C] (factor 100)
[°C] (factor 100)
[°C] (factor 100)
[°C] (factor 100)
7 .. 8
EN
5