Weighing Functions
SIWAREX FTA
Range of Values / Meaning
Table 5-32 Allocation of DR 47
5.29.1 DR 47 - MMC-ID
Identification of the MMC card.
5.29.2 DR 47 - Log ID
The log ID is a unique log number that can be used to identify the log. The number
is incremented with every logging procedure.
5.29.3 DR 47 - Last log data
The output log consists of 4 strings.
5.30 DR 120/121 Trace - Data logging
Measurement values and actual states in the weighing process can be stored in
RAM memory of the SIWAREX FTA or in the MMC card with the trace function.
When recording to RAM, SIWATOOL FTA reads the trace elements through data
record 120, when recording to MMC through data record 121.
The recording can be started with the “Start Recording” command 70 and stopped
with “End recording” command 71.
By defining parameters in data record DR 7 MMC Parameter the trace function can
be defined. The data record cannot be read through the SIMATIC CPU.
Range of Values / Meaning
Seq. Number of the stored trace element
Number of valid data bytes;
If 0, then the requested element number does
Block check character
Crc
CRC16 (seq.No. + Trace element)
Table 5-33 Trace data record