The format of the .COE file for the C_IP4 Virtex DA FIR core is different from the COE files used for the 4K FIR Filter cores.
For the Virtex core, the only valid variables that can be specified in the COE file are
RADIX : radix you are using to specify coefficient values, and COEFDATA : comma delimited list of coefficient values
When specifying the coefficients, you must make sure that the number of coefficients specified matches the number of TAPs you have specified in the DA FIR customization GUI, and that you have correctly specified whether the collective set of values are Signed or Unsigned.
Sample .COE coefficient file for a symmetrical 12-tap DA FIR filter with signed coefficients: