Tightening Technology | Bosch Rexroth AG 91/263
7.5 Rexroth Open Protocol
This chapter describes the communication between the superior computer and tightening controller via
the Rexroth Open Protocol. During communication, the superior computer acts as a client and the tight-
ening controller acts as a server.
The Rexroth Open Protocol is a communication protocol based on TCP/IP that has been specially devel-
oped for tightening controllers. Up to 5 clients connected to each other can be managed using the Open
Protocol.. Users can configure a tightening controller and get information on events in the tightening con-
troller via the client.
Example of a communication sequence:
The settings for the protocol are made via the NEXO-OS operating system in the
Settings Data Open Protocol menu, see section Settings on page 203.
Client connects to the tightening controller via MID 0001
Tightening controller sends an MID 0002 acknowledgement
Tightening controller resets the keep alive timeout
Client sends MID 0060
Tightening controller confirms with MID 0005
Tightening controller sets the keep alive timeout
Tightening controller sends the tightening results to the client
Tightening controller waits for acknowledgement (Ack) from the client for response timeout sec-
onds
Tightening controller sends acknowledgement
Yes No
Tightening The connection is ended by the tightening
controller
Number of
attempts < 4
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