Definition
modbus_crc16(data)
Features
When using the Modbus protocol, this command reduces the load on Modbus CRC16 calculations.
Parameters
|
Parameter Name |
Data Type |
Default Value |
Description |
|---|---|---|---|
|
data |
byte |
- |
Modbus data for CRC16 calculations |
Return
|
Value |
Description |
|---|---|
|
crchigh |
High byte of CRC16 calculation result |
|
crclow |
Low byte of CRC16 calculation result |
Exception
|
Exception |
Description |
|---|---|
|
DR_Error (DR_ERROR_TYPE) |
Parameter data error occurred |
|
DR_Error (DR_ERROR_VALUE) |
Parameter value is invalid |
|
DR_Error (DR_ERROR_RUNTIME) |
C Extension module error occurred |
|
DR_Error (DR_ERROR_STOP) |
Program terminated forcefully |
Example
Python
data = b"\x01\x02\x03\x04\x05\x06"
crchigh, crclow = modbus_crc16(data)
#crchigh = 186(DEC), BA(HEX)
#crclow = 221(DEC), DD(HEX)
Keyword
modbus / crc16