266
Bosch Rexroth AG
| Tightening Technology
3 608 878 300
System 350
| 3 608 878 300/2019-03
Control information
The control information contains:
•
the start character, which is acknowledged by the communication partner
•
the end ID and a block check sum at the end of every telegram transfer
If the check sum corresponds to the data received, the communication partner acknowledges telegram
receipt with DLE (positive acknowledgement). If there is a negative acknowledgement (NAK), the
telegram will be sent again.
Control information is used for the send, sequence, and reaction telegrams.
Reaction telegram
The reaction telegram is only used with the RK512 protocol. It has a similar structure as the send
telegram, but it does not send any data, but just an error number in the telegram header. The error
numbers in the (sequence) reaction telegram (see Table
) and the
possible causes are described in Table
.
6.3.2
ID code transfer to the tightening system via the 3964R protocol
The ID-code is transferred as a string (ASCII) in a data element with the 3964R or RK512 protocol. In the
compact system, the ID code for the tightening channel (CH0.1) is written to a fixed position in the data
element. In the modular system, the ID-codes for the max 8 parallel applications (FO 1 to FO 8) and the
single tightening channels (CH 0.1 to CH 15.6) are each written to a fixed position in the data elements.
The ID-code of a single-channel tightening (single channel: the tightening channel runs outside of an
application, e.g. hand-held nutrunner) is transferred by the partner controller to the tightening system in
data element no. 2 ("ID code single channel"). Each of the max. 16 card rack fields has its own data
element available. Within the data element, the ID-codes are sorted by slot number.
Table 6–28:
Error numbers in reaction telegrams and possible causes
Error number
(hex)
Cause
00
No error, transmission successful
0a
User access to area not possible, e.g. hardware memory too small.
Command not supported, e.g. fetch
1
1
In CS351 respectively KE 350, only the Send command is supported.
0c
Length of the data received in the reaction telegram (or sequence reaction telegram) is too long/
short.
10
Byte 2 (telegram ID) and/or byte 4 (command type) in the command telegram not recognized.
14
Data element does not exist or is not permitted
Data element too short (start a length > area)
16
Error in 3rd byte: Command is not "A", "O", or "E"
Error in 3rd byte in sequence telegram: Command not the same as in the first send telegram
34
Send telegram was too short or <128 bytes, i. e. less data were received (possibly with
sequence telegrams) than indicated in the telegram header (byte 7 and 8).
36
A sequence telegram arrived, although a command telegram (send telegram) was expected.
The options supported are
Delete ID code after start
and
Extend ID code with sequence number
.
Summary of Contents for Rexroth Tightening System 350
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