Siemens LR 460 User Manual
7ML19985JM01
SITRANS LR 460 (PROFIBUS PA) – INSTRUCTION MANUAL
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Diagnostics
All diagnostic information shown below is viewable via PDM.
Diagnosis reply (applies only to cyclic masters)
This is a response to a GET-DIAG message.
During DPV0 data exchange, the PROFIBUS PA slave will notify the Master when a
serious error occurs. The Master will then send a Diagnosis request. The reply to this
request is normally logged in the PLC and is referred to as the "Hex values."
serious error occurs. The Master will then send a Diagnosis request. The reply to this
request is normally logged in the PLC and is referred to as the "Hex values."
The reply may contain two parts. The first part is 6 bytes long and is defined by the
PROFIBUS standard. If there is a second part, it is called the ’extended diagnostic’ and it
is eight bytes long. The last four bytes of the extended diagnostic message give the error
code shown below. (The same information is also available acyclically via the Diagnosis
Object.
PROFIBUS standard. If there is a second part, it is called the ’extended diagnostic’ and it
is eight bytes long. The last four bytes of the extended diagnostic message give the error
code shown below. (The same information is also available acyclically via the Diagnosis
Object.
Acyclic Diagnostics
This consists of four bytes.
Status Codes for Uncertain Quality
Values in hex notation
Description
0x4B
Value is a substituted value (normally used in Fail-safe).
0x4C/0x4F
Initial value.
0x47
Last usable value.
Hex values Byte
Bit
Description
Indication
class
a
a.
R indicates the message remains active as long as the reason for the message
exists.
A indicates the message will automatically reset after 10 seconds
exists.
A indicates the message will automatically reset after 10 seconds
0x01000000
0
0
Electronics failure
R
0x02000000
1
Mechanical failure
R
0x04000000
2
Motor Temperature too high
R
0x08000000
3
Electronics temperature too high
R
0x10000000
4
Memory error
R
0X20000000
5
Measurement failure
R
0X40000000
6
Device not initialized (no calibration)
R
0x80000000
7
Self calibration failed
R