Table of Contents
MODBUS RTU
MBD servo drive implements Modbus RTU protocol on a RS232 serial point to point communication interface.
Available functions
| Function name | Function code |
| Read Holding Register | 0x03 |
| Write Single Register | 0x06 |
| Write Multiple Registers | 0x10 |
Modbus register areas
| Parameter type | MODBUS address |
| Servo parameter | 0x00 to 0x3FF |
| Input variables | 0x1000 to 0x103F |
| Output variables | 0x1200 to 0x123F |
Basic command
Enabling, disable and set the speed
| Command | Address | Data Write | Unit | NOTE |
| Opmode | 0x0010 | 2 | - | 2 = digital speed |
| Enabling | 0x1000 | bit 0 = 1 | - | |
| Disabling | 0x1000 | bit 0 = 0 | - | |
| Speed setpoint | 0x1026 | xxxx | RPM |
Reading the status and the current
| Command | Address | Data Write | Unit | NOTE |
| Enabling OK | 0x1200 | Bit 0 = 1 | - | if enabled bit 0 is set to 1 otherwise is set to 0 |
| Read speed | 0x1218 | xxxx | - | |
| Read Q current | 0x1210 | xxxx | Amper x 10 |
Input Variable table
Output Variable Table
