Power Interface - Zmotion ZAIO Hardware Manual

1.1.1. Power Interface

Pin No.
1
2
3
4
5
ZAIO0802 Module uses single power.
Relative GND of both parties in the CAN bus communication must be connected
or the main power supply of the controller and the main power supply of the expansion
module are the same power supply. When the controller and the expansion module are
powered by different power supplies: the main control power ground of the controller
should be connected to the GND of the power supply of the expansion module,
otherwise the CAN may be burned out.
The expansion module with an 8-bit DIP switch (the hardware version above V1.3)
integrates a 120Ω resistance between CANL and CANH. It is controlled by DIP 8.
When dialing ON, the resistance is connected. When multiple expansion modules are
connected on the CAN bus, it is only necessary to dial DIP 8 of the last expansion
module to ON. There is no need to connect a 120Ω resistor outside the terminal.
Name
GND
CANL
EARTH/SHIELD
CANH
+24V
5
ZAIO Bus Expansion Card Manual Version 1.1
Description
Internal power ground
CAN differential data -
Shield
CAN differential data +
Internal power 24V input