SSI encoder singleturn: The number of absolute representable revolutions (0x2C46 and 0x2C56) is erroneously calculated to zero (corrected from V01.04.01)
Corrected from:
Servo inverter i950 FW: from V01.04.01.1471
Response of the new version:
With a singleturn SSI absolute encoder, the value 1 is now correctly displayed under parameter 0x2C46, or 0x2C56 (number of absolute representable revolutions). The singleturn encoder is now correctly evaluated as absolute encoder.
What happens? Parameter 0x2C46 or 0x2C56 (number of absolute revolutions) incorrectly displays '0 revolutions' in certain cases. As a result, an SSI absolute encoder is not recognized as an absolute encoder within the device and is evaluated as such.
When does the behaviour occur? Use of a singleturn SSI absolute encoder and Set the same value for the encoder parameters position data length (0x2C4A:8 or 0x2C5A:8) and bits/revolution (0x2C4A:3 or 0x2C5A:3).
For the SSI absolute encoder, the number of revolutions that can be displayed is calculated by the difference between the position data length (0x2C4A:8 or 0x2C5A:8) and the number of bits used to display one revolution (0x2C4A:3 or 0x2C5A:3). If both values are the same, then this is a single-turn absolute encoder. In this case the value 0 is calculated incorrectly.
