Siemens SINAMICS G130 Manual page 113

When a safety message is present, the bit 2139.5 = 1 ("Safety message present") is set. The
entry in the message buffer is delayed. For this reason, the message buffer should not be
read until a change in the buffer (r9744) has been detected after "Safety message present"
is output.
The messages must be acknowledged via the fail-safe inputs F-DI of the TM54F or via
PROFIsafe.
Properties of the safety message buffer:
● The entries appear in the buffer according to the time at which they occurred.
● If the cause of at least one message in "Current message case" is rectified and
● A maximum of 8 messages can be saved in the message buffer of the "Current message
● If a fault is rectified and the message is acknowledged, the message buffer will be
● 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 is deleted with p9752 = 0. The parameter p9752 (SI message cases,
counter) is also reset to 0 at POWER ON. This also clears the fault memory.
Overview of important parameters
● r2139.0...12 CO/BO: Status word, faults/alarms 1
● r9744 SI message buffer changes, counter
● r9745[0...63] SI component number
● r9747[0...63] SI message code
● r9748[0...63] SI message time received in milliseconds
● r9749[0...63] SI message value
● r9750[0...63] SI diagnostic attributes
● 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, 05/2010, A5E03264275A
acknowledged, the message buffer is reorganized accordingly. Messages that have not
been rectified remain in "Current message case".
case". If 8 messages are entered in the "Current message case" and a new message
occurs then this message can no longer be saved.
reorganized. The history is recorded in the "Acknowledged message case" 1 to 7.
used to diagnose the message more accurately (refer to the message description for
more details).
Safety Integrated Extended Functions
6.12 Message buffer
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