Modbus Gateway(Pro) Technical Service Manual
4
2.2.4 Interface
1）Diagram of interface
RS485-1
communication
interface
CAN
communication
interface
RS485-2
communication
interface
Power input
DI Digital input
DO digital output
RS232
communication
interface
SD card interface
USB interface
Ethernet interface
2）Power Supply
Power supply should be 100VAC-240VAC, 50/60Hz.
Warning! Protective grounding of power input must be connected, otherwise a hazard
may happen; in addition, do not touch the power input when the gateway is energized.
Notice: Power cord should be secured with the equipped wire clip, as shown in the figure.
3）Communication Interfaces
CAN communication interface: It is connected to air conditioner through two-core
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