Message Buffer - Siemens Sinamics S110 Function Manual

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Message buffer

In addition to the fault buffer for F... faults and the alarm buffer for A... alarms, a special

message buffer for C... safety messages is available for Safety Extended Functions.

The fault messages for the Safety Basic Functions are stored in the standard fault buffer

(see "Buffer for faults and alarms").

Set parameter p3117 = 1 if you need to save both the Basic Functions messages and the

Extended Functions messages in the standard fault buffer.

The message buffer for safety messages is similar to the fault buffer for fault messages. The

message buffer comprises the message code, message value, and message time (received,

resolved), the component number for identifying the affected SINAMICS component and

diagnostics attributes. The following diagram shows how the message buffer is structured:

Structure of the message buffer

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"

Function Manual

Function Manual, 01/2011, 6SL3097-4AB10-0BP3

Safety Integrated Functions

8.5 Safety Integrated Extended Functions

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