3 608 878 300 Tightening Technology | Bosch Rexroth AG 431/641
System 350 | 3 608 878 300/2019-03
6.7.7.20 Keep alive messages
MID 9999 Keep alive message
Sent by:
superordinate computer
The superior computer sends a keep alive message to the tightening controller. The tightening controller returns the
received message to the superior computer.
A communication timeout of 15 s (can be parameterized by the BS) applies to the tightening controller, i. e. if no
message is exchanged between the superior computer and the tightening controller within 15 s, the tightening
controller will believe that the connection has been disrupted and disconnect it.
Note:
We recommend sending a message (keep alive or other) to the tightening controller at the latest every 10 seconds
to avoid undesired connection disruptions (with high latency times with TCP/IP).
Revision: 001 (supported by Rexroth OP and Rexroth OP-Ford and Rexroth OP-BMW)
Data field: is empty, 0 bytes
Possible response MID Error no. Comment
Keep alive message MID 9999 (mirrored
from the tightening controller)
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