© Danfoss | August 2018 AQ00000211 | 169
1. Verify the changes to the sector by comparison of desired data to read-back inverted data.
2. Calculate the signature CRC as CRC-CCITT (sector data + PSAC). See example.
3. Write signature CRC to signature CRC address (see).
The PSAC is a 4-character hex-string. The signature CRC is calculated by adding the PSAC data as if it was the last 4
bytes of the sector data.
Name
Description of parameter
Hydraulic Config Signature
U16
Signature CRC value for named sector
Signature CRC value for named sector
Valve Calibration Data Signature
Signature CRC value for named sector
CAN WAS Calibration Data Signature
Signature CRC value for named sector
Analogue Sensor Calibration Data
Signature
Signature CRC value for named sector
Peripherals Config Signature
Signature CRC value for named sector
SEHS Protocol Data Signature
Signature CRC value for named sector
Internal monitoring Signature
Signature CRC value for named sector
Vehicle Geometry Signature
Signature CRC value for named sector
Signature CRC value for named sector
Signature CRC value for named sector
Signature CRC value for named sector
Table 80
17.5.5 Example
Example for calculating CRC signature for “Valve calibration data” (see section 17.5.2)
The serialized sector data is “5CFEA40197FF69001900”.
In this example PSAC = 12AFh is used. Note that this PSAC is not valid and will be detected as an incorrect PSAC by
the PVED-CLS.
The signature CRC is calculated as the CRC-CCITT for “5CFEA40197FF69001900AF12”.
In this example, the Signature CRC turns out to be is 0xE0BD.
The low byte (BDh) shall be stored at P44 and the high byte (E0h) at P45
Important
Contact your local technical support at Danfoss Power Solutions for the correct PSAC values.
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