F37835 — HF Damping Module: Cyclic data transmission error

F37835 reports a DRIVE-CLiQ communication error between the Control Unit and the HF Damping Module: the two nodes no longer send and receive in synchronism, so the cyclic data exchange with the HF Damping Module is disturbed. The component concerned and the precise reason are coded in the message value, which the drive stores in r0949 (fault value) or r2124 (alarm value); the decoding is listed below.

• There is a DRIVE-CLiQ communication error between the Control Unit and the HF Damping Module — the nodes do not send and receive in synchronism.
• Which telegram actually failed is recorded as a coded fault cause: the cyclic telegram was not received, the telegram receive list ran into a timeout, or the telegram send list ran into a timeout (see the decoding of the message value below).

1. Read the message value of F37835 in r0949 and split it into component number and fault cause to identify the affected component and the type of telegram fault.
2. Carry out a POWER ON.
3. If F37835 occurs again after powering up, replace the component involved.

• The drive codes the individual information of this message in the message value (r0949/r2124): 0000yyxx hex: yy = component number, xx = error cause.
• Fault cause 33 (= 21 hex): the cyclic telegram has not been received.
• Fault cause 34 (= 22 hex): timeout in the telegram receive list.
• Fault cause 64 (= 40 hex): timeout in the telegram send list.

• r0949 — fault value: read the coded message value of F37835 here; the hex coding 0000yyxx gives the component number (yy) and the fault cause (xx) of this event.
• r2124 — alarm value: named by the manual alongside r0949 as the register in which the same coded information of this message is stored.

Carry out a POWER ON first. If F37835 appears again afterwards, replace the component involved. Once the cause has been eliminated this way, the fault can be acknowledged immediately; no further reset steps are described.