Diagnostics; Diagnosis Reply (Available Cyclically) - Siemens SITRANS LR560 Operating Instructions Manual

Values in hex notation
0x4B
0x4C/0x4F
0x47
Values in hex notation
0x10
0x01
0X1F
a)
This could happen when a firmware download has been done, but a system reset has not
been done. This could also happen if the function blocks are not configured properly using
the handheld programmer, PDM or acyclic services.

Diagnostics

All diagnostic information shown below is viewable via PDM.

Diagnosis reply (available cyclically)

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 cyclic diagnosis'
and it is 8 bytes long. The last 4 bytes of the extended diagnostic message give the error
Extended Mode Diagnosis
diagnosis (see
on page 136).
The same information is also available acyclically via the Diagnosis Object.
Cyclic Diagnosis (6 bytes)
7ML19985LT01 SITRANS LR560 (PROFIBUS PA) – OPERATING INSTRUCTIONS
Status Codes for Uncertain Quality
Description
Value is a substituted value (normally used in Failsafe).
Initial value.
Last usable value.
Status Codes for Bad Quality
Description
The LOE timer has expired: this could be caused by LOE or by a sen-
sor malfunction: value is BAD.
There is an error in the configuration of the function blocks in PROFI-
a)
BUS PA .
The function block, or the transducer block, has been placed out of
service.
on page 137 and
Extended Cyclic Diagnosis (8 bytes)
Condensed Mode
Condensed Mode Diagnosis
Diagnosis Object
(last 4 bytes)
Diagnosis
Extended Mode
Diagnosis
Page 135