Weidmuller IE-CS-2TX-1RS232/485 User Manual page 13

IE-CS(T)-2TX-xRS232/485 Getting Started
the various environments and this is why the IE-CS(T)-2TX-xRS232/485 provides DIP switches for setting the
pull high/low resistor values for each serial port.
The DIP switches are located on the PCB board; you will need to take off the covers to access them. To set the
pull-high resistor to 150 KΩ, flip DIP1 to "OFF," and then set the pull-low resistor to 150 KΩ, and then flip DIP2
to "OFF." To set the pull-high resistor to 1 KΩ, flip DIP1 to "ON," and then set the pull-low resistor to 1 KΩ, and
then flip DIP2 to "ON." Make sure that DIP3 is "ON" to enable the 120Ω terminator. The default settings for the
pull-high and pull-low resistors, and the terminators are all at "OFF."
SW1
ON
ON
1 2 3
OFF
IE-CS(T)-2TX-1RS232/485 IE-CS(T)-2TX-2RS232/485
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