Siemens SIMATIC ET 200M Operating Instructions Manual page 157

Value
00h
67h
01h
0Dh
Table 8- 3
Bit
7 ... 6
5
4 ... 0
Return values on DS_READ
Alongside the possible return values (in accordance with DPV1 standard) on reading a data
record, in connection with the time stamping the following return value can be supplied:
Table 8- 4
Code
0x80B0
ET 200M
Operating Instructions, 12/2008, EWA-4NEB780600602-08
Meaning
Status of time stamping
Data record number of the data record to be fetched
(64h to 72h = DS 100 ... 114)
Number of messages in the data record
(01h to 14h = 1 ... 20)
fixed value
Status of time stamping
Contents
0
Place the time stamping again
0: No new placement carried out
1: New placement taking place
0
Return value on DS_READ
Meaning
A data record outside of the value range of DS 100 ... DS 114 is requested.
•
The IM 153-2 has not yet been configured (DS 240 missing).
•
8.2 Time stamping the input signals with IM 153-2
Meaning
Evaluation unnecessary
If the bit 5 is set (= 1), then the history of the still unread
buffer (data records) must be deleted, as the time
stamping has been placed again.
New placement of the time stamping is necessary when
starting up / restarting and changing over to redundant
mode. With the events specified, you must install this
deletion in the user program.
Evaluation unnecessary
Functions
155