9
English
Installation
Communication sequence
System Initialization
࡙
At start-up, all registers have the value 0.
࡙ Ǯ˵ʪ͝ϩ˵ʪϩθɇʀ̧̈͝˝ͱ˙ϩ˵ʪđͱʒɵЇϑ̈͝ϩʪθ˙ɇʀʪ͔ͱʒЇ̷ʪ̈ϑʀͱ͔Χ̷ʪϩʪʒࡡɵ̈ϩϑߡϩͱߣͱ˙ϩ˵ʪʀͱ͔͔Ї̈͝ʀɇϩ̈ͱ͝ϑϩɇϩЇϑθʪ˝̈ϑϩʪθ࣍θʪ˝̈ϑϩʪθ
ߢ࣎˙ͱθʪɇʀ˵̈͝ʒͱͱθЇ̈͝ϩɇθʪЇΧʒɇϩʪʒϩͱߢࢋ
࡙ Ã˙ɇ̷̷ɵ̈ϩϑߡϩͱߣͱ˙θʪ˝̈ϑϩʪθߢɇθʪߢʪЭʪ͝˙ͱθͱ͝ʪ̈͝ʒͱͱθЇ̈͝ϩࡡ̈ϩ͔ʪɇ͝ϑϩ˵ɇϩϩ˵ʪϩθɇʀ̧̈͝˝ͱ˙ɇ̷̷̈͝ʒͱͱθɇ͝ʒͱЇϩʒͱͱθЇ̈͝ϩϑ˵ɇϑ
been completed, and that all indoor and outdoor register values have been updated.
࡙
If bit 0 of the communication status register for an indoor unit is 0, it means that this indoor unit is not connected.
࡙
After the power is turned on, the BMS periodically reads the communication status register values of indoor units. Then, if
ɇ̈͝͝ʒͱͱθЇ̈͝ϩӥϩ˵ɇ̷̷ɵ̈ϩϑߡϩͱߣͱ˙ϩ˵ʪθʪ˝̈ϑϩʪθϑʪϩϩͱߢ̈ϑ˙ͱЇ͝ʒࡡʀͱ͝ϩθͱ̷ɇ͝ʒ͔ͱ̈͝ϩͱθ̈͝˝ɇθʪɇЭɇ̷̈ɇɵ̷ʪ˙ͱθϩ˵ʪ˙ͱЇ͝ʒ̈͝ʒͱͱθ
unit from that time.
࡙ Ɵ˵ʪ9đƊʀɇ͝ͱ̷͝цʀͱ͝ϩθͱ̷ϩ˵ʪ̈͝ʒͱͱθЇ̈͝ϩϑӥϩ˵ɇ̷̷ɵ̈ϩϑߡϩͱߣͱ˙ϩ˵ʪʀͱ͔͔Ї̈͝ʀɇϩ̈ͱ͝ϑϩɇϩЇϑθʪ˝̈ϑϩʪθ˙ͱθϩ˵ʪ̈͝ʒͱͱθЇ̈͝ϩϑʪϩϩͱߢࢋ
Monitor and operate units from the BMS
࡙
When the BMS writes a value to the holding register, a control command is sent to the relevant indoor unit.
࡙
The holding register value for an indoor unit is not updated until a changed status value is received from that indoor unit.
࡙
Because the user might be able to operate indoor units with a remote control, the BMS must reads their status periodically.
࡙
If communication between an indoor/outdoor unit and the Modbus interface module is stopped, the last status value is
retained until communication is resumed.
Modbus
interface module
Communication status
(51 bits 0 to 2): 0 (Not Ready)
Check
communication
status.
Monitoring
&
control
Power on
Communication status
(51 bits 0 to 2) : 7 (Ready)
Indoor unit
BMS
Power on
Check communication status (51).
Response: 0 (Not Ready)
Tracking
Response: Status
Change a value.
Response: Status
Check communication status (51).
Response: 7 (Ready)
Check indoor status
(input & holding registers).
Response: Status
Change a value in the holding registers.
Response
Check indoor status
(input & holding registers).
Response: Status
Содержание MIM-B19N
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