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MV-831 Hardware Modules
Example: Driving LEDs from the GPI Outputs
Example: Driving LEDs from the GPI Outputs
MV-831 GPI outputs have open collector drivers. There is a +5 V DC screw terminal on the GPIO
connector to provide the power needed to drive LEDs or relays.
The following schematic is an example of the circuit needed to drive an LED by each GPI
output. MV-831 GPIO connector pin names and numbers are shown on the left.
Fig. 2-8: Connecting LEDs to GPI Outputs
CAUTION
Electrostatic Damage:
Static precautions must be observed when inserting and removing
cards.
150
Ω
150
Ω
150
Ω
150
Ω
+5 Vdc Out
GPI Out 1
GPI Out 2
GPI Out 3
GPI Out 4
Terminal 5
LED 1
LED 2
LED 3
LED 4
External Circuit
GPI Screw Terminal:
Terminal 1
Terminal 2
Terminal 3
Terminal 4