F36887 — Hub DRIVE-CLiQ (CU): Component fault

F36887 is raised when a fault is detected on the DRIVE-CLiQ component involved — the DRIVE-CLiQ Hub Module behind the CU. The manual explicitly notes that Faulty hardware cannot be excluded. The message value tells you which component reported the fault and why, so read it out of r0949 before working on the hardware.

• The DRIVE-CLiQ component involved (the DRIVE-CLiQ Hub Module) has reported a fault; the manual warns that Faulty hardware cannot be excluded.
• The concrete reason is given with the fault cause in the message value — the manual decodes it as listed under message value below.

1. Check the DRIVE-CLiQ wiring (interrupted cable, contacts, ...).
2. Check the electrical cabinet design and the cable routing for EMC compliance.
3. If required, use another DRIVE-CLiQ socket (p9904).
4. Replace the component involved.

The drive codes the message value in r0949/r2124 as 0000yyxx hex: yy is the component number, xx the error cause. The manual decodes the fault cause as follows:

• 32 (= 20 hex): Error in the telegram header.
• 35 (= 23 hex): Receive error: the telegram buffer memory contains an error.
• 66 (= 42 hex): Send error: the telegram buffer memory contains an error.
• 67 (= 43 hex): Send error: the telegram buffer memory contains an error.
• 96 (= 60 hex): Response received too late during runtime measurement.
• 97 (= 61 hex): Time taken to exchange characteristic data too long.

• r0949 (fault value): read the coded message value here — component number (yy) and fault cause (xx) as 0000yyxx hex.
• r2124 (alarm value): named together with r0949 by the manual for the same coded value.
• p9904 (topology comparison acknowledge differences): the parameter named in the remedy when another DRIVE-CLiQ socket is to be used.

Acknowledge the fault immediately once the cause has been removed. Because the component itself is suspect, work through the checks first; if the fault returns after acknowledgement, switch to another DRIVE-CLiQ socket (p9904) and, as the last step of the remedy, replace the component involved.