Connections
CoolMasterNet PRM Rev 0.7
8
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4
Connections
4.1
HVAC Lines
CoolMasterNet supports eight HVAC Lines labeled as L1 ... L8 (see Layout), intended for connection to various
HVAC systems. All eight HVAC Lines can be used simultaneously (except L1 with L5 and L2 with L6) and
independently according to CoolMasterNet configuration. Most of the HVAC Lines capable to support a number
of HVAC Types as specified in table below, but one at time, according to configuration of the specific Line.
Mitsubishi Heavy Industries
Notes:
· DIP Switches Q and R are used to adjust lines L1 and L2 internal parameters to meet specific HVAC Type
requirements.
· Lines L1 and L5 share the same internal resources of CoolMasterNet and can not be used simultaneously.
· Lines L2 and L6 share the same internal resources of CoolMasterNet and can not be used simultaneously.
DIP Switch P3 defines which line is enabled.
· Lines L6 and L7 can be linked into a single line L7 with polarity auto-detection, by DIP Switches P1 and P2.
Line L2 can be enabled in this case.
· Line L3 is by default used for ModBus RTU RS485 communication.
4.2
HomeAutomation/BMS Protocols
CoolMasterNet supports several Home Automation/BMS protocols.
Home Automation/BMS
Protocol
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