Mark Interface+ Technisches Handbuch Seite 9

4.3 Connection reading and modifying Optitherm+ with Modbus for G(S)+/GSX
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Interface+ module
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B
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Communication
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Power supply 1~230V + N + PE / 50Hz
Connecting air heater with 2-wired bus cable.
For connecting more than 1 air heaters see figures [2] [3]
RS 485 Modbus
* Only 1 voltage may be used: 230V or 24V.
** The switch must always be switched to the right.
Note: It may happen that both contacts, malfunction and operation, are present simultaneously.
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L N PE
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S4(ON)
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OptiTherm+
06 29 189
EN
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