Siemens SIMATIC S7-300 Reference Manual page 14
Comparison list for programming languages based on the international mnemonics
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Also See for SIMATIC S7-300:
- Manual (676 pages) ,
- Reference manual (574 pages) ,
- Installation and operating manual (356 pages)
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Basic instructions
Counters
IEC counters
✔
✔
✔
✔
Count up
✔
✔
✔
✔
Count down
✔
✔
✔
✔
Count up and down
Legacy
✔
✔
✔
Assign parameters and count up
✔
✔
✔
Assign parameters and count down
✔
✔
✔
Assign parameters and count up / down
✔
✔
✔
Set counter value
✔
✔
✔
Count up
✔
✔
✔
Count down
✔
✔
✔
Enable counter
✔
✔
✔
Load counter
✔
✔
✔
Load BCD-coded counter value
✔
✔
✔
Reset counter
✔
✔
✔
Set counter
Comparator operations
✔
✔
✔
✔
Equal
✔
✔
✔
✔
Not equal
A5E33285102-AB
Extended instructions
Description
Technology
LAD / FBD
(not S7-1200)
CTU
CTD
CTUD
S_CU
S_CD
S_CUD
-(SC)
-[SC]
-(CU)
-[CU]
-(CD)
-[CD]
CMP ==
CMP <>
Communication
STL
SCL
CTU
CTD
CTUD
nn
S_CU
nn
S_CD
nn
S_CUD
nn
nn
CU
nn
CD
nn
FR
nn
L
nn
LC
nn
R
nn
S
nn
== I/D/R
=
<> I/D/R
<>
Page 13
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