Interrupts, diagnostics messages, error and system alarms
6.5 Device-specific diagnostics in DP-V1
CM 1542-5
30
Manual, 11/2014, C79000-G8976-C290-02
Byte 1: Variant "Status type"
Table 6- 7
Structure of byte 1 of the device-specific diagnostics (variant "status type")
Bit no.
Meaning
7
Value
Meaning
1
Status information
6...0
Status_Type
0
- reserved -
1
Status information
2
Modul_Status (see also bytes 4...62)
3...31
- reserved -
32...126
Vendor-specific
127
- reserved -
Byte 2: Slot number
Slot number (1...n) of the slave module
0 is the placeholder for the entire device.
Byte 3: Variant "Interrupt specifier"
Table 6- 8
Structure of byte 3 of the device-specific diagnostics (variant "interrupt specifier")
Bit no.
Meaning
7...3
Seq_No
Unique identifier of an interrupt alarm
2
Add_Ack
If this bit is set, the DP-V1 master is indicating that this interrupt
expects an acknowledgement in the form of a WRITE job.
1...0
Alarm_Specifier
0
No further distinction
1
Interrupt appears, slot disrupted
The slot generates an interrupt due to an error.
2
Interrupt disappears, slot OK
The slot generates the interrupt and indicates that it has no further
errors.
3
Interrupt disappears, slot still disrupted
The slot generates an interrupt and indicates that it has further
errors.
