GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
316
In application of the Modbus gateway, an upper unit as the terminal unit is usually coupled with a
RS485 matched resistance, so this gateway is factory defaulted to be without a matched resistance.
When the Modbus gateway is required to be set with a matched resistance, the seventh position of
this DIP switch should be set as shown in the figure above to ―0‖ and the gateway should be located at
the end of the RS485 bus.
Function
Without
matched
resistance
configured
With
matched
resistance
configured
indicates the position of toggle switch
5) Function DIP Switch-First IDU No. Setting
As shown in the topological air conditioning network, each IDU has an identification number.
The sixth position of the function DIP switch is intended to set the first IDU number which is used to
define the range of the IDUs under the control of the gateway.
The number of IDUs ranges from 1 to 255.
When the first IDU number is set to ―1‖, it indicates the range of the IDUs under the control of the
gateway is 1 through 128.
When the first IDU number is set to ―129‖, it indicates the range of the IDUs under the control of the
gateway is 129 through 255.
When the IDU number is beyond the range defined by the gateway, it should be modified.
The following figure shows how to set the No. of the first IDU under the control of the gateway:
6
First indoor
unit number :1
First indoor unit
number: 129
6
Projecting lever
Function DIP
1 65432 7 8
0
1
0
1
To Next Page
Loading...
Need help?
General