Gree ME30-24/E6, Service Manual

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Step one: Set address DIP of Modbus Gateway(Mini);
Step two: Refer to Chapter to set matching resistance of Modbus Gateway(Mini);
Note:
1. In Modbus bus, if the connected Modbus Gateway(Mini) exceeds 30 or communication distance exceeds 800m, one
photoelectric isolation repeater shall be added. Connect the R+ and R- port of photoelectric isolation repeater with the R+ and R-
port of RS485 communication port of nearby Modbus Gateway(Mini).
2. In “ The fourth switch of DIP switch S3——setting of CAN2 bus matched resistance”, the setting method of matched
resistance of Modbus Gateway(Mini) is introduced. Meanwhile, the master ODU in the first and end systems of CAN2 bus shall be
set as with matched resistance. In the following, the detailed setting position and method of matched resistance of GMV5 DC
inverter multi VRF are taken as example.
※ CAN2 bus: Detailed meaning please refer to topology introduction.
2
2.1
2.1.1
DIP Switches
Notice! Please set DIP switches before using this gateway. Re-energize the device after setting DIP switches.
Otherwise this device cannot operate normally!
Setting area of Modbus gateway DIP switch is located inside the product, including address DIP switch and function DIP switch.
2.1.1.1
Setting of Address DIP Switch
(1) Address DIP switch consists of S1 and S2. S3 is function DIP switch.
Modbus Gateway(Mini)
Debugging
ardware
H
Debugging