Communication87Cyclical message typesPPO typesFigure 8. PPO message typesType 1Type 2Type 3Type 4Type 5Parameter Process dataCW REF PZD3 PZD4 PZD5 PZD6 PZD7 PZD8 PZD9 PZD10VALUEINDidentificationPZD3SW ACT PZD4 PZD5 PZD6 PZD7 PZD8 PZD9 PZD10Fixed area Freely mappable areaOUT area ñ Data sent from Master to Slave (control data)IN area ñ Data sent from Slave to Master (actual data)Parameter Identification:ID ñ Parameter IdentificationIND ñ Index for ArraysVALUE ñ Parameter Value (Max. 4 bytes)PKW ñ Parameter ID/ValueProcess Data:CW ñ Control WordSW ñ Status WordREF ñ ReferenceACT ñ Actual ValuePZD ñ Process Data (application-specific)DW ñ Data WordOUT areaIN area ID IND VALUEType 6ParameterchannelDP-V0DP-V0DP-V0DP-V1DP-V1DP-V1PKW PZD
