Product description
18
5.4 Interfaces
This section describes the electronic interfaces on the device.
For safe operation, the interfaces must be operated according to their
corresponding permissible specifications.
5.4.1 Insulation requirements for the connection of external equipment
External equipment connected to the thermostat must be reinforced or double
insulated from the mains and the maximum voltages must be below the values
of 30 VAC / 60 VDC.
Also note the maximum voltage information in the technical specifications for
the individual interfaces.
5.4.2 RS232 interface
The RS232 interface is a 9-pin D-Sub socket for connecting the device to a PC.
RS232 plug
RS232 interface pin assignment
Pin 2 RxD receive data Pin 7 RTS request to send
Pin 3 TxD transmit data Pin 8 CTS clear to send
Pin 5 0 V signal GND
Pins 1, 4, 6 and 9 are reserved. Do not use.
RS232 interface factory setting
Parity straight
Baud rate 4800 baud
Handshake Hardware
Data bit 7
Stop bit 1
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