Code Description0x85xy System error on the bus coupler0x8xyy General error informationÄ Chap. 4.2 ‘General and Specific Error Information RET_VAL’ page 6612.1.4 FC 302 - FM_GET_FREQUENCY - Calculate frequency consistentWith the FC 302 FM_GET_FREQUENCY, you can calculate the frequency of the inputsignals of both channels of the System SLIO frequency measurement module. By thisfunction internally SFC 14 - DPRD_DAT for consistent reading of user data is called.Here, the error messages of the function block are returned by ERROR.ParametersParameter Declaration Data type Memory block DescriptionLADDR_IN /HW_IDINPUT WORD /HW_IOI, Q, M, D, L n LADDR_IN– Logical base input address of thefrequency measurement module.– When used in CPUs from VIPA orin S7-300 CPUs from Siemens.n HW_ID– HW identifier to address the fre-quency measurement module.– When used in S7-1500 CPUsfrom Siemens.DONE OUTPUT BOOL I, Q, M, D, L Ready signal(TRUE = OK)ERROR OUTPUT WORD I, Q, M, D, L Return value(0 = OK)FREQUENCY_CH0 OUTPUT DINT I, Q, M, D, L Channel 0: FrequencyFREQUENCY_CH1 OUTPUT DINT I, Q, M, D, L Channel 1: FrequencyPeripheral address:n This parameter is available in CPUs from VIPA or in S7-300 CPUs from Siemens.n Configured base address of the input area of the System SLIO frequency measure-ment module, which is to be read from. The address is hexadecimal.n (Example: Address 100: LADDR_IN: = W#16#64)HW identifier:n This parameter is only available in S7-1500 CPUs of Siemens.n Enter at HW_ID the HW identifier, with which your module can be addressed accord-ingly.Ä Chap. 4.1 ‘HW identifier - HW_ID’ page 66Ready signal of the functionn TRUE: Function was finished without error.n FALSE: Function is not active respectively there is an error.DescriptionLADDR_INHW_IDDONEVIPA SPEED7 Device SpecificFrequency Measurement > FC 302 - FM_GET_FREQUENCY - Calculate frequency consistentHB00 | OPL_SP7 | Operation list | en | 18-30 251
