ZMC304X/306X Hardware Manual Version1.3
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Chapter III Expansion Module
There are ZIO series expansion modules which support ZCAN protocol and EIO
series expansion modules which support EtherCAT protocol. See related hardware
manual for reference.
3.1 Wiring Reference For CAN, Input, Output and Power
ZMC3 series controller uses single power. ZIO expansion module card uses
double power to supply, in actual application, ZIO power channels on expansion
modules can share the same power supply.
When ZMC306X series controller and ZIO module use different powers, the
EGND of controller must be connected to the GND of expansion modules,
otherwise CAN bus may be burned out.
When multi expansion modules are linked on CAN bus, it is necessary to connect
120Ω resistor between CANL and the CANH on the last IO expansion module.
