SmartHardware RS-485, Руководство пользователя, Страница: 8 / 12

SmartHardware
User Guide STR1000008X
8
2. Power
This controller can be powered from +5V, +12 or +24V. Use Jp1 and Jp3 to
select voltage.
Power = +5 V
Power = +12/24 V
Jp2 is used to load all default parameters
.
Disconnect power. Put jumper. Connect power. The blue LED will light
constantly. Now controller waits to remove jumper. Remove jumper. The
controller will continue in normal mode. The blue LED will flash briefly.
Check the PDF file with commands for a full explanation – page 3.
IMPORTANT: Do not change jumpers for power, when voltage for power is applied to the
controller. The controller is powered by a switching converter for 5V. It might pulses, from
switching the jumper to erase the software built into the microcontroller.
Jumpers should be switched ONLY when the controller is powered down!
V
=
+
5
V
G
nd
Jp1
Jp3
Jp2
JR
2
JR
1
JR
3
CPU
9
-2
4
V
t
o
5
V
+5V
(Load Defaults)
V
=
+
9
-2
4
V
G
n
d
Jp1
Jp3
Jp2
JR
2
JR
1
JR
3
CPU
9-
2
4V
t
o
5V
+5V
(Load Defaults)