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Programming the FM 350-1
5.7 Programming FM 350-1 without FCs
FM 350-1 Counter module
Manual, 05/2011, A5E03648639-01
71
Reading Back Values
Values are read from the record DS 2 of the FM 350-1. You can also read this record with
SFC 59 RD_REC. The DS 2 has the following structure:
Table 5- 23 Data record DS 2
Value
Address
Counting
Measure
Bytes 0 to 3
Load value
Low limit
Bytes 4 to 7
Comparison value 1
High limit
Bytes 8 to 11
Comparison value 2
Update time
Resetting the status bits
With the FM 350-1, the status bits are also reset using the complete acknowledgement
principle.
Table 5- 24 Resetting the status bits depending on the operating mode
Operating mode
Status bits
Counting
STS_ZERO, STS_OFLW, STS_UFLW, STS_COMP1, STS_COMP2
Measure
STS_OFLW, STS_UFLW, STS_COMP1
The chronological sequence when resetting the status bits is shown in the figure:
W
5(6B=(52
676B5(6B=(52
6WDWXVELW
&RQWUROELW
&KHFNEDFNELW
2QUHVHWWLQJHYHQWLVVWLOORFFXULQJ
5HVHWLVFDUULHGRXW
5HPRYDORIUHVHWUHTXHVW
7KH)0DFNQRZOHGJHVWKHUHVHW
UHTXHVWDQGUHVHWVWKHVWDWXVELW
5HTXHVWUHVHW
Figure 5-6
Resetting the status bits
Summary of Contents for SIMATIC S7-300 FM 350-1
Page 8: ...Table of contents FM 350 1 Counter module 8 Manual 05 2011 A5E03648639 01 ...
Page 186: ...Technical data 11 2 Technical data FM 350 1 Counter module 186 Manual 05 2011 A5E03648639 01 ...
Page 188: ...Replacement parts FM 350 1 Counter module 188 Manual 05 2011 A5E03648639 01 ...
Page 190: ...References FM 350 1 Counter module 190 Manual 05 2011 A5E03648639 01 ...
Page 194: ...Glossary FM 350 1 Counter module 194 Manual 05 2011 A5E03648639 01 ...