Bosch CLIMATE 5000 VRF BMS-MOD Installation & User Manual page 4

4 | Overview
2.2. System Architecture Description
It supports two kinds of outdoor unit with baud rates of 600 and 4800. (For detailed information, please contect our technical support). The
addresses of accessed indoor/outdoor units can't repeat.
1) When the baud rate of the outdoor unit is 600, 64 indoor units and 4 outdoor units can connect to it at once.
2) When the baud rate of the outdoor unit is 4800, 60 indoor (with the address from 4—63) units and 4 outdoor units can connect to it at most.
The upper computer system with Modbus protocol access to terminal A2B2E by RTU or by TCP to connect to modbus gateway. See the connection
figure between modbus gateway and air-conditioner system below: Connection through Modbus TCP:
Note:XYE port and K1K2E port connect hand in hand,and then access to A1B1E port.
XYE
Modbus TCP
K1K2E
Modbus system
Fig.2.2
Connection through Modbus RTU:
XYE
K1K2E
Fig.2.3
6720862468 (16/04)
Modbus RTU
Modbus system
CLIMATE 5000 VRF