Modbus Gateway(Pro)
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5.2 Internet topological graph
5.3 Topology Introduction:
Modbus bus: L1 shown in the figure is the Modbus bus.
CAN1 network: which is consist of Modbus Gateway(Pro) and all IDUs and
ODUs of the system. One CAN1 network can be connected to maximum 80 IDUs.
CAN2 network: which is consist of Modbus Gateway(Pro) and main control
ODU of the system. One CAN2 network can be connected to maximum 16 systems
and 255 IDUs.
System: One system consists of one set of outdoor unit (one set of outdoor
unit is a module group consisting of 1~4 modules, that is 1~4 outdoor units) and it’
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