Bit7 in the status word of the device control (active controller inhibit) displays incorrect status (eliminated from V5.0 onwards)

Eliminated from:
StateLine / HighLine with firmware version V05.01 or higher

Behaviour of the new version?
Depending on the controller inhibit, Bit7 changes to the correct status in the status word of the device control (DCTRL).

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Which products are affected?
8400 StateLine / HighLine with FW < 05.01

What happens?
According to the controller inhibit status, Bit7 (CInh) in the wDriveControlStatus status word is not displayed correctly. Bit7 is not set to TRUE although the controller is inhibited.
This behaviour results in incorrect diagnostics / misinterpretation regarding the controller inhibit status. Incorrect reactions in a control may be the outcome.

When does the problem occur?
If the device is supplied with only 24 V after switch-on.

Possible diagnostics?
Compare the status word in C00150 and the wDriveControlStatus output word.

Short-term measures / recommendations?
Do not evaluate Bit7 in the DCTRL status word.

Evaluation:
Use additional power supply to avoid the problem.

Information taken from chapter 1.1.40 of Service Message No. 16/2010.