ECI0032 Network IO Control Card User Manual V1.5
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Wiring Note:
When connecting multiple ZIO expansion modules on the CAN bus, a 120-ohm
resistor needs to be connected in parallel between the CANL and CANH terminals.
Please use STP to ensure communication quality and the shield layer is connected
to ground.
Please use the same power supply for internal powers of controller and expansion
module.
4.2.
CAN Bus Expansion
ZIO series expansion modules or ZMIO310-CAN coupler with sub modules can be
used.
Connect control card to CAN bus expansion modules, when the eighth bit of the DIP
switch of the expansion module is turned to ON, which indicates that a 120 ohm resistor
has been connected, but needs to connect one 120 ohm resistor externally. When
connecting multiple CAN expansion modules, you only need to dial ON for the eighth digit
of the last expansion module, which means please do not dial bit-8 of other modules.
4.2.1.
CAN Expansion Wiring
The ZIO expansion module is powered by the dual power supply. Except the main
power supply, an additional IO power supply is required to supply independent power for
IO. Both the main power supply and the IO power supply use 24V DC power supply. For
ZAIO, it only needs to connect to the main power supply.
To prevent interference, separate the IO power supply from the main power supply.
Please select the expansion module according to the requirements, and select IO
mapping or axis mapping according to the resources of the expansion module.
Wiring reference of connection between ZIO expansion module and control card and
standard wiring of CAN bus are shown as below (take ECI0032 and ZIO1616 as the
example):
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