hier der dazugehörige orginaltext:

aufbau vom protokoll des anzusprächenden gerätes, und angaben zur checksum

Checksum calculation
The algorithm to compute the checksum to validate the RS485 transmission is the CRC polynomial
standardized by CCITT:

Bn=N^16+N^12+N^5+Bn-1

Where N^16 means that N is elevated to the sixteenth power of 2 (i.e. it is shifted left of 16 bit)
and where the symbol ‘+’ represents the XOR bit by bit.
Practically, if New is the byte to process , Tmp is a swap byte and BccLo and BccHi are the low
and high parts of the validation word, the following algorithm must be followed:

A. Initialize BccLo=0xFF, BccHi=0xFF

B. For each byte to transmit or receive repeat the following steps:
1. New = New XOR BccLo
2. Tmp=New << 4
3. New=Tmp XOR New
4. Tmp=New >> 5
5. BccLo=BccHi
6. BccHi= New XOR Tmp
7. Tmp= New << 3
8. BccLo= BccLo XOR Tmp
9. Tmp= New >> 4
10. BccLo= BccLo Xor Tmp

C. Negate bit by bit BccLo e BccHi : CRC_L=~BccLo CRC_H=~BccHi
Aufbau des Protokols
The communication protocol uses commands of fixed length (8Byte + 2Byte for Checksum)
structured as follows:

Address Command Par.1 Par.2 Par.3 Par.4 Par.5 Par.6 CRC_L CRC_H

The structure of the answer is also with fixed length (6 Byte + 2 Byte for Checksum) :

Transmission State Module State Par.1 Par.2 Par.3 Par.4 CRC_L CRC_H
schon mal danke, für deine mühe