opti-solar SP5000 Vitality Eco, Installation & Operation Manual, Page: 26 / 57

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For single unit, please
1. Prepare a 2-wire, twisted cable
2. Insert and wound the cable on the bead in
accessory as right drawing
3. Fix cable wires on plug (accessary E). Take care of
the polarity
4. Push the plug to RS485 port
5. Connect another end of cable to monitor device
For multiple connections, please connect them as figure below.
The DIP switch (1) is the terminal resistor switch of the RS485. The default
position of this switch is “off ”. However, if the communication does not work
well, please try to switch it to “on” to improve.
Setting Address
For multiple connections, you need to assign each unit with different address .
To set the address, please refer to section of “
Set RS485 Address”.
T+ T+ T T T+ T+ T T T + T+ T T T + T+ T T
RS485 RS485 RS485 RS485
Terminal resistor
switch (1)
Unit 1 Unit 2 …… Terminal Unit