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MiiNePort E1/E2-SDK
Wiring Precautions
This section describes some important safety precautions that you should pay attention to before proceeding
with installation.
ATTENTION
Be sure to disconnect the power cord before installing or wiring the evaluation board.
ATTENTION
Determine the maximum possible current allowed in each power wire and common wire. Observe all electrical
codes dictating the maximum current allowable for each wire size. If the current goes above the maximum
capacity, the wiring could overheat, causing serious damage to your equipment.
ATTENTION
Take care when handling the evaluation boards. When plugged in, the evaluation boards' internal components
generate heat, and consequently the board may be too hot to touch.
You should also pay attention to the following:
•
Do not run signal or communication wiring and power wiring in the same wire conduit. To avoid interference,
wires with different signal characteristics should be routed separately. Separate paths should be used to
route wiring for power and devices. You can use the type of signal transmitted through a wire to determine
which wires should be kept separate. The rule of thumb is that wires sharing similar electrical
characteristics may be bundled together.
•
Keep input wiring and output wiring separate.
•
If power wiring and device wiring paths must cross paths, make sure the wires are perpendicular at the
intersection point.
•
All wiring should be clearly labeled.
Selecting the Serial Interface
RS-232
MiiNePort E1-SDK: To use an RS-232 serial interface, place the 6-pin jumper on JP19.
MiiNePort E2-SDK: To use an RS-232 serial interface, place the 6-pin jumper on JP13.
RS-485
MiiNePort E1-SDK: To use an RS-485 serial interface, place the 2-pin jumper on the middle two pins of JP15 or
the right-most two pins of JP16 (labeled as 485EN), and place the 6-pin jumper on JP20.
MiiNePort E2-SDK: Place the 6-pin jumper on JP14.
2-2
Getting Started
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