3 608 878 300
Tightening Technology |
Bosch Rexroth AG 263
System 350
| 3 608 878 300/2019-03
RK512
Each telegram can send a maximum of 128 bytes of data. Larger data quantities are divided among
several telegrams. The RK512 protocol lets you "link" telegrams to generate sequence telegrams (see
Tables
). Here, the transfer of more than 128 bytes (number data
word) will be announced in the telegram header of the first telegram already. Once received, the data
divided among the telegrams will be re-arranged in the correct order.
When a telegram is sent with RK512, a reaction telegram is also sent from the receiver to the sender
containing information about the transmission and any transfer errors that may have occurred.
3964R
With this protocol, each telegram can also send a maximum of 128 bytes of data only. Larger data
quantities are divided among several telegrams. Every telegram is a complete package, so there are no
sequence telegrams (see Table
). By addressing directly consecutive memory areas, the
3964R protocol can also re-arrange larger data quantities that were transferred in different telegrams in
the correct order.
No reaction telegrams are used with the 3964 protocol. Only "block check sum" (BCC) and "positive
acknowledgement" (DLE) are used for data security.
Table 6–24:
Setup of
send telegram
for the RK512 protocol as implemented in the tightening system
Protocol
CS351/
KE350
(PLC)
Value
PLC
(CS351/
KE350)
Meaning
Name
Hex
Send telegram
3964R
STX
02
Start character
DLE
10
Positive acknowledgement
Telegram header
1. Byte
00
ID
2. Byte
00
ID
3. Byte
41
Command SEND "A"
4. Byte
44
Data element "D"
5. Byte
0a
Data element no., e. g. DE 10=0a hex
6. Byte
80
Data word no., e.g. DW 64=80 hex
7. Byte
00
Number
e.g. 50 DW (= 32 hex)
8. Byte
32
9. Byte
ff
No CT
10. Byte
ff
All CPUs
Data
11. Byte
1 Data byte
12. Byte
2 Data byte
…
…
Xth byte
n. Nth data byte (128
n)
3964R
DLE
10
End ID
ETX
03
End ID
BCC
Block check sum
DLE
10
Positive acknowledgement
Reaction telegram
3964R
STX
02
Start character
DLE
10
Positive acknowledgement
Telegram header
1. Byte
00
ID
2. Byte
00
ID
3. Byte
00
4. Byte
00
Error number
3964R
DLE
10
End ID
ETX
03
End ID
BCC
Block check sum
DLE
10
Positive acknowledgement
Summary of Contents for Rexroth Tightening System 350
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