Shenzhen Hpmont Technology Co., Ltd. Chapter 9 MODBUS Communication Protocol
HD09-S Series User Manual V1.1 - 79 -
Chapter 9 MODBUS Communication Protocol
9.1 Communication Terminal
Type Name Terminal Description
SCI
communication
terminal
Communication port pin Communication port signal
1,3 +5V
2 485+
4,5,6 GND
7 485-
8 Reserved
9.2 The Transmitted Value Corresponding to Calibration Relationship
Except parameters in the remarks, other function codes should refer to the user manual column
"Minimum modification unit" description and determine the calibration relationship of the specified
function code.
Note:
1. F04.03, F16.05, F16.06, F16.22 communication data 0 - 2000 corresponding data -100.0% - +100.0%.
2. Status parameter 0x3318 communication data 0 - 16000 corresponding data -8000 - +8000.
3. Status parameters: Process PID setting, process PID feedback, process PID error, process PID integral term
and process PID output communication data 0 - 2000 corresponding data -100.0% - + 100.0%.
9.3 Protocol Functions
9.3.1 Support Functions
Supported function Code Instructions
Read the drive function parameters or status parameters 0x03
Rewrite the inverter with a single function parameter or
control parameter
0x06 Power-down is saved by F17.09
Read the drive function parameters or status parameters 0x10 Power-down is saved by F17.09