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Detailed alarm messages

Alarm messages can be signaled to the MES-Suite using three methods (BOOL, WORD, DWORD). For this purpose, all alarm messages must be mapped in the following structure (table or CSV):

Column Description Type Required / Std.
Number Number of alarm message. INT Yes
Text Alarm message as text. STRING Yes
Bit number Starts at 0. Required for alarm message link with WORD or DWORD, otherwise 0. INT Required at WORD/DWORD, otherwise 0.
PLC variable name/ address The name or address of the variable that indicates the alarm. BOOL/WORD/DWORD Yes
Descrition Details of alarm message STRING Optional
Action Possible measures for remedial action. STRING Optional

The alarm messages are imported once and linked with the PLC variables. Any number of faults can be present at the same time. All variables are monitored and recorded independently of each other.

For each fault message there is a corresponding BOOL variable in the PLC. The breakdown shown above defines which BOOL variable corresponds to which alarm. The fault is triggered on a rising edge and switched off on a falling edge.

16 alarm messages are mapped per WORD and 32 per DWORD. The bit position of the alarm in the WORD/DWORD variable is defined in the zero-based bit number column in the breakdown shown above. There is also defined which WORD/DWORD variable contains which alarm. The alarm is triggered on a rising edge of the corresponding bit, and switched off on a falling edge.