FM 350-2 Counting This section contains information on the following topics:CNT2WRPN (S7-300, S7-400)CNT2RDPN (S7-300, S7-400)CNT2_CTR (S7-300, S7-400)DIAG_RD (S7-300, S7-400)Additional references for FM 350-2 Counter V2 (S7-300, S7-400)