Siemens Siwarex U - Diagnosis by Means of the Data Set DS31;32; Diagnosis by Means of the Component Status; Table 7-2 Content of Ds1

6BMESSAGES AND DIAGNOSTICS
Byte Bit Meaning Remarks
4 0
to
6
Channel type
7 (further channel type available) –
5 0
to
7
Number of diagnostic bits per channel all bits are being used
6 0
to
7
Number of channels (here 1 or 2)
7 0 Channel error - channel 0
(SIWAREX U: weighing channel 1)
channel-specific errors - see byte 9 / 10
1 Channel error - channel 1
(SIWAREX U: weighing channel 2)
2
3
4
5
6
7
8,9 0 0 byte 9 = channel 1
byte 10 = channel 2
1 0
2 0
3 0
4 Minimum voltage undershot at the sense lines
5 0
6 Gross weight number overflow
7 Measuring range exceeded
10–15 Not allocated (factory setting = 0)
Table 7-2 Content of DS1
7.5.2 Diagnosis by means of the data set DS31/32
Alternatively, operating faults can also be determined by reading data sets
DS31/32, e.g. in the case of disabled diagnostic alarm. It should be noted here,
however, that brief errors may not be detected under certain circumstances when
the duration of the error is short relative to the cycle of the SIMATIC CPU.
7.5.3 Diagnosis by means of the component status
The component status of SIWAREX U can be displayed in SIMATIC Manager.
The operating faults are reported to the SIMATIC CPU as a diagnostic alarm and can
be displayed via the component status in STEP 7 (see picture, Component status).
7-46
SIWAREX U