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MODBUS RTU Communication
Communication interface
the integrated drive linear motors are provide with MODBUS RTU communication interface for programming. Any PLC with MODBUS RTU interface can be used in combination with this motor.
The supported MODBUS mode are :
1. Read Multiple Holding Registers - Function code 3
2. Write Single Holding Register - Function code 6
Please note that you can read a maximum of 2 registers per read operation with standard communication speed of 38400 and parity Even. The MODBUS parameters are organized in different area in respect to the function involved.
| PARAMETER AREA | STARTING ADDRESS Decimal | ENDING ADDRESS Decimal | SIZE |
| Drive Parameter | 0 | 1024 | 1024 |
| Application parameter | 1536 | 1792 | 256 |
| Motion table | 1793 | 1902 | 109 |
| Oscilloscope configuration | 2000 | 2008 | 8 |
| Input Variables | 4096 | 4159 | 63 |
| Output Variables | 4608 | 4671 | 63 |
| Oscilloscope data | 4672 | 6723 | 2051 |
| Diagnostic data logging temperature | 7000 | 7512 | 512 |
| Diagnostic data logging current | 7513 | 8025 | 512 |
Command Word - Address 4096
Please note that with function code 6 (write register), the reply at this register write will be not present.
| VALUE | DESCRIPTION |
| 0 | No command |
| 1 | Star Homing |
| 2 | Reserved |
| 3 | Enable drive |
| 4 | Disable drive |
| 5 | Manual Homing |
| 6 | Fault reset |
| 7 | Phase calculation - Motion test |
| 8 | Store configuration to Flash |
| 9 | Read configration from Flash |
| 10 | Start Motion |
| 11 | Stop Moiton |
| 12 | Drive reset |
Status Word - Address 4608
| VALUE | DESCRIPTION |
| 0 | Drive Init state |
| 1 | Ready |
| 2 | Phase calculation - Motion test |
| 3 | Automatic Homing |
| 4 | Manual mode operation |
| 5 | Run |
| 6 | I2T Fault |
| 7 | Manual Homing |
| 8 | Write configuration to FLash |
| 9 | Write to flash done |
| 10 | Flash error |
| 11 | Read configuration from Flash |
| 12 | Flash fault |
| 13 | SIN/COS encoder overrange |
| 14 | Motor overtemperature |
| 15 | Power stage overcurrent |
| 16 | DC Link overange |
| DOCUMENT | FILE |
| List of MODBUS registers | :integrated_drive_motors:modbus_register_microdrive.xlsx |
Digital Input and Output Signals
the integrated drive linear motors are equipped with 2 digital inputs and 3 digital outputs. The Logic level is 24V and the input are protected against excessive voltage level. The output logic can be NPN (default) or PNP output with internal pull-up resistors.