Mark Interface+ Technisches Handbuch Seite 4

1.3 Product description and application
The Interface+ module can be applied in the following combinations:
1.3.1
Connection: one G(S+) per Interface+.
With an external controller, the burner capacity is controlled with a 0 - 10Vdc signal.
Functions:
• Burner capacity control: Signal 0-10Vdc, control 0 - 9 Vdc < 0.9V burner off, > 1,5V burner
start.
• Contact continuous ventilation
• Reset
• Operation notification (potential free contact)*
• Malfunction (potential free contact)*
• Reading current data using Modbus
See connection diagram 4.1 for the specific connections for this application.
* For both potential free exits only 1 voltage may be used: 230V or 24V.
1.3.2
Connection: one G(S)+ per Interface+.
With an external controller, the burner capacity is controlled with Modbus.
Functions:
• Burner capacity control (0-10Vdc displayed 0-1000, control 0-900)
• Continuous ventilation
• Reset with contact on Interface+ (not with Modbus)
• Reading current data using Modbus
See connection diagram 4.2 for the specific connections for this application.
Explanation of specific Modbus holding registers for this application:
Holding register
121
122
133*
204
205**
* In this application CH mode must be set to 8
** Continous fan is only possible in case the external override is active (204 = 1).
In this case holding registers 100 - 133 are applicable.
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0 – 10VDC burner capacity control
Burner capacity control with Modbus
Access Description
R Actual burner capacity
R + W Burner capacity
R + W CH mode
R + W External override
R + W Fan Override
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Range
0-900
Control 0-900
7 .. 8
0 = no override
1 = override active
0 = off
1 = continuous system fan