126 Communication protocolRead Service (SDO Upload) Initiate SDO Upload ProtocolThis protocol is used to implement the Initiate SDO Upload service.ccs Client command specifier; ccs = 2: Initiates the upload request.scs Server command specifier; scs = 2: Initiates the uploadresponse.n Number of data bytes (in d) which do not contain data. Bytes[8-n, 7] do not contain segment data. Valid only if e = 1 and s =1 (otherwise n = 0).e Transfer type; e = 0: Normal transfer. e = 1: Expedited transfer.s Size indicator; s = 0: No data set size indication.s = 1: Data set size indication.m Multiplexor; represents the index/subindex of the data to betransferred by the SDO.d Data; e = 0, s = 0: Reserved for further use.e = 0, s = 1: Contains the number of bytes to be uploaded.Byte 4 contains the LSB and byte 7 contains the MSB.e = 1, s = 1: Contains the data of length 4-n to be uploaded.Encoding depends on the type of the data referenced by indexand subindex.e = 1, s = 0: Contains unspecified number of bytes to beuploaded.x Not used. Value is always 0.Reserved Reserved for further use. Value is always 0.Client Initiate SDO Upload ProtocolRequestConfirmServerIndicationResponse4...0x7...5ccs = 27...5scs = 24x3...2n1e0s0 1 4 80 1 4 8Reservedmm d
