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List of SFCs, and SFBs No. Short Name Function SFB 61 RECV_PTP 2) SFB 62 RES_RECV 2) SFB 63 SEND_RK 2) Receiving Data (ASCII, 3964(R)) Deleting the Receive Buffer (ASCII, 3964(R)) Sending Data (RK 512) SFB 64 FETCH_RK 2) SFB 65 SERVE_RK 2) SFB 75 SALRM Send interrupt to DP master SFB 81 RD_DPAR Read Predefined Parameter * Fetching Data (RK 512) Receiving and Providing Data (RK 512) SFB 29 "HS_COUNT" and SFB 30 "FREQ_MES" only exist on the CPU 312 IFM and CPU 314 IFM. SFBs 38 "HSC_A_B" and 39 "POS" only exist on the CPU 314 IFM. For a detailed description, refer to /73/. 1) SFBs 41 "CONT_C," 42 "CONT_S" and 43 "PULSEGEN" only exist on the CPU 314 IFM. 2) SFBs 44 to 49 and 60 to 65 only exist on the S7-300C CPUs. 35-8 System Software for S7-300/400 System and Standard Functions - Volume 2/2 A5E00739858-01
