ECI2820 Network Motion Control Card Hardware Manual Version1.0
11
2.2.1 Power / CAN Interface
PIN NO
Name
Description
1
EGND
Power ground
2
CANL
CAN differential data -
3
EARTH/SHIELD
Shield
4
CANH
CAN differential data +
5
+24V
Internal power 24V input
For communication quality, please use twisted pair shielded wire, and shield
connects with the ground, the internal power of controller and expansion module use
the same one.
When multi controllers are linked on CAN bus, it is necessary to connect 120 Ω
resistor between CANL and CANH of the last IO expansion module.
2.2.2 RS232 Interface
PIN NO
Name
Description
2
RXD
Receive data PIN
3
TXD
Send data PIN
5
GND
Internal power ground
9
DC5V
Power 5V output, it supplies text screen.
Crossover cable with two female head is needed when try to link to computer.