Siemens sitrans PROBE LU User Manual

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Remote Operation : PA
Page 28 SITRANS Probe LU (PROFIBUS PA) – INSTRUCTION MANUAL 7ML19985JB02
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.
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.)
Acyclic Diagnostics
This consists of four bytes.
Hex values Byte Bit Description
Indication
class
a
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

Siemens sitrans PROBE LU Specifications

General

Measuring Principle	Ultrasonic
Communication	HART
Output	4 to 20 mA
Power Supply	12 to 30 V DC
Process Temperature	-40 to 80 °C
Enclosure Rating	IP68
Material	PVDF
Ambient Temperature	-40 to 70 °C
Measurement Range	0.25 to 12 m (0.8 to 39 ft)