Siemens SINAMICS S120 Function Manual page 93

Properties of the safety message buffer:
● The entries appear in the buffer according to the time at which they occurred.
● If a new message case occurs, the message buffer is reorganized accordingly.
● If the cause of at least one message in "Current message case" is rectified and
● If "Current message case" contains eight messages and a new message is output, the
● r9744 is incremented each time the message buffer changes.
● A message value (r9749, r9753) can be output for a message. The message value is
Deleting the message buffer:
The message buffer can be deleted as follows: p9752 = 0. Parameter p9752 (SI message
cases, counter) is also reset to 0 at POWER ON. This also clears the fault memory.
Overview of important parameters (see the SINAMICS S120/S150 List Manual)
● r2139.0...12 CO/BO: Status word, faults/alarms 1
● r9744 SI message buffer changes, counter
● p9752 SI message cases, counter
● r9747[0...63] SI message code
● r9748[0...63] SI message time received in milliseconds
● r9749[0...63] SI message value
● p9752 SI message cases, counter
● r9753[0...63] SI message value for float values
● r9754[0...63] SI message time received in days
● r9755[0...63] SI message time removed in milliseconds
● r9756[0...63] SI message time removed in days
Safety Integrated
Function Manual, (FHS), 11/2009, 6SL3097-4AR00-0BP0
The history is recorded in the "Acknowledged message case" 1 to 7.
acknowledged, the message buffer is reorganized accordingly. Messages that have not
been rectified remain in "Current message case".
message in the parameters in index 7 is overwritten with the new message.
used to diagnose the message more accurately (refer to the message description for
more details).
Safety Integrated Extended Functions
5.11 Message buffer
93