An unsigned 64-bit value, you may need to use a union.
Description:
Please use NetworkOutputOverrideValueSet instead. NetworkOutputValueSet will set values to override those that would normally be set by the RMP. This allows you to take complete control over exchanged EtherCAT PDOs. This will only work if you have used NetworkOutputOverrideSet(index, true);
Note
NetworkOutputValueGet & NetworkOutputValueSet are not using the same location. ValueSet is an intended override value. ValueGet is the sent value.