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EX-42034
4. Switch and Jumper Settings
4.1 Switch Settings
Termination for RS-422, RS-485 2-wire and RS-485 4-wire mode:
RS-485 2-wire mode
4.2 Jumper Settings
JP2-JP5:
12V 5V
JP1:
P12V
X12V
P5V
X5V
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5V
= At pin 9 is now a voltage of +5V DC.
(Factory Setting)
12V
= At pin 9 is now a voltage of +12V DC.
There are 4 jumper on the board, so you can make the settings individu-
ally for all serial ports. The voltage adjustment can be made with the
jumper JP1. But this should not be adjusted for standard applications.
If you have the jumper JP2-JP5 set to 5V or 12V, you can adjust the
voltage with the jumper JP1. There are 4 different power sources.
(Attention! Connector J4 must be connected to the power supply!)
X5V
= 5Volt from PC Power Supply (Factory Setting)
P5V
= 5Volt from Mainboard
X12V
= 12Volt from PC Power Supply
P12V
= 12Volt from Mainboard
RS-422 and RS-485 4-wire mode
17
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