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5.6.26 DR 7 - Memory Segment for Trace Function
The MMC memory can be used for recording the trace data and for recording the
verifiable scale logs.
The percentage of MMC memory that is available for the trace function is defined
with this parameter.
Up to 100% is permitted in this definition but the total for trace function and
verifiable log may not exceed 100%
The trace function is described in
5.6.27 DR 7 - Memory Segment for Log
The MMC memory can be used for recording the trace data and for recording the
verifiable scale logs.
The percentage of MMC memory that is available for the verifiable logs is defined
with this parameter.
Up to 100% is permitted in this definition but the total for trace function and
verifiable log may not exceed 100%
The trace function is described in
5.6.28 DR 7 - Trace Function Recording Cycle
Every n-th measurement (n x 10 msec) is recorded. When recording to RAM, n 1
is possible and when recording to MMC, n 5 is possible.
The recording can be started with the "Start Recording" 70 command and stopped
with "End recording" 71 command.
A recording element has a length of 64 bytes and contains several measurement
values and status bits (
The values that are recorded can be read with the SIWATOOL FTC and can then
be exported into MS EXCEL.
If the trace function is defined as recording into cyclic memory then it can be used
to construct a status recorder. The command for starting the recording can come
from the SIMATIC control program and the command for stopping can also come
from the control program, e.g. if you want to record and save the progress of a
procedure.
5.7 DR 8 Date / Time
SIWAREX FTC has its own hardware clock. The actual date and time can be read
through DR 8. The date and time can be set on the module group using this data
record if required.
Procedures:
Setting the date and time.
o
Send the DR 8 to the scale
o
5-68
SIWAREX FTC
5.6.28
5.6.28
see Table 5-26
Combination of recording
elements).
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