16.1.4 SFC 231 - RECEIVE - Receive from page frameThe RECEIVE block receives data from a CP. Normally the RECEIVE block is called inthe cyclic part of the user application program. Although the insertion of this block into theinterrupt or the waking program part is possible, the indicator word cannot be updatedcyclically. This should be taken over by a CONTROL block.The handshake with the CP (order initialization) and for activating a RECEIVE block isonly started, ifn the FB RLO received "1".n the CP released the order (Bit "Handshake convenient" = 1).ParametersName Declaration Type DescriptionSSNR IN INT Interface numberANR IN INT Job numberIND IN INT Mode of addressingZANF IN ANY Pointer to data destinationPAFE OUT BYTE Parameterization errorANZW IN_OUT DWORD Indicator wordIf the block runs in stand-by only the indicator word is updated. The RECEIVE blockreacts different depending from the kind of supply and the CP reaction:n If the CP transmits a set of parameters although the RECEIVE block itself got desti-nation parameters, the parameter set of the block has the priority above those of theCP.n Large amounts of data can only be transmitted in blocks. Therefore you have totransmit the assigned serial blocks by means of RECEIVE_ALL to the CPU. It is nec-essary that the block RECEIVE_ALL is called minimum one time per application cycleand CP interface, if you want to transmit larger data amounts. You also have to inte-grate the RECEIVE_ALL cyclically, if the CP only uses the RECEIVE for releasing areceipt telegram and the data is transmitted via the background communication of theCPU.DescriptionVIPA SPEED7System BlocksFetch/Write Communication > SFC 231 - RECEIVE - Receive from page frameHB00 | OPL_SP7 | Operation list | en | 18-30898
