Usage Introduction - Bosch CLIMATE 5000 VRF BMS-MOD Installation & User Manual

2.3. Function Code
Function code Function name
0x01 Read Coils
0x04 Read Input Register
0x10 Write Holding Register
2.4. Abnormal Reply
The master unit sends requests and waits for reply from the slave.When there's no error occurs, the slave will reply normally, but when there's data
checking error, the slave won't answer. When the master unit sends wrong data (except for checking error), the slave will answer abnormally.
Code Name
0x01 Illegal function code
0x02 Illegal data address
0x03 Illegal data
0x06 Slave busy
3.

Usage Introduction

3.1. IP Configuration
The default IP address is 192.168.1.200 when modbus gateway leaves the factory. The PC used for visiting websites must be in the same subnet
segment with modbus gateway, which means it should be 192.168.1.xx (xx is from 2 to 254). There are 2 ways to configure IP: static configuration
and multi-IP addition
1.1.1. Single IP Configuration
Open protocol dialog, configure the IP address and subnet mask, for example: IP: 192.168.1.211, subnet mask 255.255.255.0
Fig.3.1
After setting, click "OK" button.
CLIMATE 5000 VRF
Function
Read
Read
Write
Meaning
Function code received by the slave
can't be executed.
The received data address is not
allowed.
Value in query data field is not allowed
by the slave
The slave is busy with a long-time
program command. Ask the master to
send messages when the slave is free.
Usage Introduction | 5
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