C.8 Status Byte - Siemens SITRANS LR250 Operating Instructions Manual
Radar transmitters profibus pa
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C.8
Status byte
In PROFIBUS PA there are two possible types of status byte:
● status byte: originally defined in Profile Standard V3.0
● condensed status: an alternative status byte defined in Profile Standard V3.01
You can choose which type of status byte will be returned, by enabling or disabling Condensed
Status (3.4.): see Enable (3.4.1.) for details. When Condensed Status is disabled, Status Byte
will be returned, and the following codes will be used.
Values in hex
notation
0x80
0x84
0x89
0x8A
0x8D
0x8E
Values in hex
notation
0x4B
0x4C/0x4F
0x47
Values in hex
notation
0x10
0x01
0X1F
This could happen when a firmware download has been done, but a system reset has not been
a)
done. This could also happen if the function blocks are not configured properly using the handheld
programmer, PDM or acyclic services.
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
Status Codes for good quality
Description
Data is GOOD.
A parameter in the function block has been changed: status active for 10 s
Active low warning.
Active high warning.
Active low alarm.
Active high alarm.
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 sensor
malfunction: value is BAD.
There is an error in the configuration of the function blocks in PROFIBUS
PA
.
a)
The function block, or the transducer block, has been placed out of
service.
Appendix C: Communications via PROFIBUS
C.8 Status byte
269
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