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Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17
322
6
PROFIBUS communication
6.11
Diagnostics
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Diagnosealarm
Process alarm
More information on the diagnostic data of a process alarm (bytes x + 4 to x + 7) can be found in the
respective module description.
Structure of diagnostic alarm
–
byte x + 4 ... x + 20
Byte
Function
x + 4
• Bit 0: Module fault, i.e. an error has been detected
• Bit 1: Internal error in the module
• Bit 2: External error (module is not accessible anymore)
• Bit 3: Channel error in the module
• Bit 4: External supply voltage is missing
• Bit 5, 6: Reserved
• Bit 7: Parameterisation error
x + 5
Bit 3 ... 0: Module class
• 0b1111: Digital module
• 0b0101: Analog module
• 0b1000: FM
• 0b0111: ETS, CP
Bit 4: channel information available
Bit 7 ... 5:
• 0 (fixed)
x + 6
see module description
x + 7
• Bit 5 ... 0: Reserved
• Bit 6: Process alarm lost
• Bit 7: Reserved
x + 8
Channel type
• 0x70: Module with digital inputs
• 0x71: Module with analog inputs
• 0x72: Module with digital outputs
• 0x73: Module with analog outputs
• 0x74: Module with analog inputs and outputs
• 0x76: Counter
x + 9
Number of diagnostic bits per channel
x + 10
Number of channels per module
x + 11
Position (channel) of the diagnostic event
x + 12
Diagnostic event for channel/channel group 0
For assignment, see module description
...
...
x + 19
Diagnostic event for channel/channel group 7
For assignment, see module description
x + 20
μ
s ticker (4 bytes)
Value of the
μ
s ticker when the diagnostic alarm occurs