Technical data

Configuring Messages
16.1 The Message Concept
Programming with STEP 7
340 Manual, 05/2010, A5E02789666-01
Message
Block
Chan-
nels
Acknow-
ledge-
ment
Asso-
ciated
Values
WinCC
Display
ProTool
Display
CPU
Messages
/S7 Status
Display
PLC Remarks
NOTIFY
SFB36
1 No Up to
10
Yes No No S7-400 As ALARM
NOTIFY_8P
SFB 31
8 No up to 10 Yes No No S7-400 As NOTIFY
AR_SEND
SFB37
1 Yes No No S7-400 Used to send an
archive; no
configuration of
message texts
and message
attributes
possible
ALARM_SQ
SFC17
1 Possible 1 Yes Yes* Yes S7-300/
S7-400
Each time there
is an SFC call
and a signal
change
compared with
the last SFC call,
a message is
generated
ALARM_S
SFC18
1 No 1 Yes Yes* Yes S7-300/
S7-400
As ALARM_SQ
ALARM_DQ
SFC 107
1 Possible 1 Yes Yes Yes S7-
300/400
As ALARM_SQ
ALARM_D
SFC 108
1 No 1 Yes Yes Yes S7-
300/400
As ALARM_SQ
* depending on the OP type