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CooLinkHub PRM 1.0
© 2017 CoolAutomation
CONNECTIONS
4
CONNECTIONS
4.1
Communication Lines
CooLinkHub supports a number of communication lines intended for connection to PBUS interface as well
as integration with Home Automation and BMS control systems.
Line Type
Acronym
L1
L2
L3
L4
L5
HVAC
PBUS Master (PBM )
CH
Rolbit Zone Controller
RLBT
Home Automation / BMS
KNX
KNX
Modbus RTU
CG5
HDL
HDL
4.1.1
PBUS
PBUS is a CoolAutomation’s proprietary bus interface, based on shielded 2-wired cable (AWG24). It utilizes
free network topology.
PBUS is intended for connection of CoolPlug and ThermoPad devices to CooLinkHub. PBUS is a solution
for complete integration of (multi) split HVAC units with Home Automation and BMS systems.
4.2
RS232 Port
RS232 Interface in CooLinkHub is available from the RS232/IO connector. RS232 harness, provided with
CooLinkHub, routes RS232 signals to DB9 connector as shown below.
RS232/IO Pin
DB9 Pin
Signal Level
Description
1
2
±12V
TxD Data from CooLinkHub
2
3
±12V
RxD Data to CooLinkHub
3
5
GND
Ground
Maximal length of the RS232 Cable should not exceed 25m. The default CooLinkHub RS232 Port settings
are:
Baud Rate
9600
Data Bits
8
Parity Control
None
Stop Bits
1
Flow Control
None
By default RS232 Interface is dedicated for
