Cause : Receive configuration data invalid comes when the drive unit did not accept the receive configuration data.

Alarm value (r2124, interpret decimal):

Return value of the receive configuration data check.
1: Connection established to more drive objects than configured in the device. The drive objects for process data exchange and their sequence are defined in p0978.
2: Too many PZD data words for output or input to a drive object. The number of possible PZD items in a drive object is determined by the number of indices in r2050/p2051.
3: Uneven number of bytes for input or output.
4: Setting data for synchronization not accepted. For more information, see A01902.
5: Cyclic operation not active.
501: PROFIsafe parameter error (e.g. F_dest).

Check the receive configuration data.

Re alarm value = 1, 2: Check the list of the drive objects with process data exchange (p0978). With p0978[x] = 0, all of the following drive objects in the list are excluded from the process data exchange.

Re alarm value = 2: Check the number of data words for output and input to a drive object.

Re alarm value = 501: Check the set PROFIsafe address (p9610).