Siemens SINUMERIK 828D Function Manual page 1018

P3: Basic PLC Program for SINUMERIK 840D sl
13.13 Block descriptions
to DB 21;
s dbx 6.0;
FB 1-Parameter "ExtendAlMsg"
With the activation of the parameter a new structuring of the DB 2 becomes effective (see "Interface PLC/HMI
[Page 868]"). Upon activation the bit fields are available to the user for the disable and halt signals, which do not
generate any alarms, messages. As a result, the user need not implement the aforesaid measures. The desired
functionality is given automatically by a simple setting, resetting of signals in the new DB 2 areas.
The error and the operating messages are stored by the user in data block DB 2 (see description of DB 2 in the
lists of interface signals).
Note
In DB 2, a "1" signal must be present for several OB1 cycles to ensure that a message can
also be displayed on the HMI. There is an upper limit for the number of interrupts and
messages that can be pending at the same time. This upper limit is dependent on the PLC
CPU. On PLC 317-2DP, the upper limit for messages pending simultaneously is 60.
See also Parameter Manual (Lists, Manual 2), chapter on PLC Alarms / Messages
Declaration of the function
STL Representation
FUNCTION FC 10 :
// NAME:
VAR_INPUT
ToUserIF :
Ack :
END_VAR
END_FUNCTION
Description of formal parameters
The table below lists all formal parameters of the AL-MSG function.
Signal Type
ToUserIF I
Ack I
1018
//Setting the blocking condition,
//Resetting is done via FC AL_MSG,
//if M 50.0 outputs the signal "0".
VOID
AL_MSG
BOOL ;
BOOL ;
Type Range of values
BOOL
BOOL
Remark
1 = Transfer the signals to user interface
every cycle
1 = Acknowledge error messages.
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions