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IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.5 408
Setting Jumpers Appendix E
E
Introduction
The IOLAN contains jumpers that you might need to set before you configure it and put it into
production. You can set the power out pin, pin 9, to a fixed 5V DC output or to the external adapter
output; this can range from 9-30V DC (if an external adapter is shipped with the IOLAN, it has a 12V
DC output); maximum output power is 1 (one) watt per a serial port. By default, the power out pin is
set to no power. You can set the IOLAN line termination to
on or off (this is off by default) if you
are using EIA-422/485 (not applicable for I/O models).
1-Port IOLAN DB25 Male/Female
To change the settings, do the following:
1. Unplug the IOLAN from the electrical outlet and disconnect everything from the box.
2. Open the case by unscrewing the two side screws, one on each side, and lifting off the top of the
case. You should see the following:
3. To change the power pin out, locate J4. For the fixed 5V DC output, jumper pins 1 and 2. For the
output to equal the external adapter input, jumper pins 2 and 3.
4. To turn line termination on, locate and jumper J1 for Full Duplex Rx (422) or locate and jumper
J9 for Half Duplex Rx/Tx (485).
5. Close the IOLAN case by replacing the case lid and the two screws. You can now power it on
with the new settings.
Power
DIP
Switch
Reset
RJ45
Serial Connection
Pin1
Screw
Screw
J1
J4
J9