Rexroth Tightening System 350 System Documentation - Rhino ...

7 Data Services Tightening Technology | Bosch Rexroth AG 125/3167.3 3964R communicationTable 7–18: Telegram setup for the 3964R protocol with a telegram header as in the tightening system.ProtocolCS351 ValuePLC Meaning(PLC)Name Hex(CS351)Data ⎯⎯ 11th byte ⎯→ 1st data byte⎯⎯ 12th byte ⎯→ 2nd data byte⎯⎯ … ⎯→⎯⎯ … ⎯→⎯⎯ Xth byte ⎯→ nth data byte (128 ≥ n)3964R ⎯⎯ DLE 10 ⎯→ End ID⎯⎯ ETX 03 ⎯→ End ID⎯⎯ BCC ⎯→ Block check sum←⎯ DLE 10 ⎯⎯ Positive acknowledgementTelegram headerThe telegram header can differ according to the protocol and type of telegram. It can have up to 10 bytesand contains the following information:Table 7–19: Description of the information in the telegram headerByte no. Meaning Used inRK512 sendtelegramRK512sequencetelegram3964R sendtelegram1 ID, indicates if it is a send telegram or a sequence telegram +(0000 hex) +(00ff ex) +(0000 hex)23 Command byte, always “send” in the CS351 compact system+(41 hex) +(41 hex) +(41 hex)4 Data type, always “data element” in the CS351 Compact +(44 hex) +(44 hex) +(44 hex)System5 Data element (DB), data storage address + – +6 Data word (DW), data storage address (first byte) + – +7 Number of data words (data) in this send telegram and all of +(Max. 256) – + (Max. 64)8the affiliated sequence telegrams9 No “coupling marker”, not used in the CS351 Compact +(ff hex) – +(ff hex)System10 All CPUs, not used in the CS351 Compact System +(ff hex) – +(ff hex)DataThe number of data words listed in the telegram header are transferred from the data element. The examplein Table 7–18 on page 124 shows 50 data words (100 bytes) in data element 10 starting with dataword 64.The size of the data elements is 512 bytes=256 data words. However, each transferred telegram maycontain a maximum of 128 bytes (64 data words). If more than 128 bytes in a data element have to betransferred, then the contents will be shared between several telegrams.System 350 | 3 608 878 040/05.2008