Siemens Simatic S7-300 User manual

Edition 12/2014
Reference manual
SIMATIC
S7-1200 / S7-1500
Comparison list for programming languages based on the international mnemonics

A5E33285102-AB Page 1
Comparison list for S7-300, S7-400, S7-1200, S7-1500
Reference manual
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The notices
referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage have no safety
alert symbol. These notices shown below are graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of injury
to persons with a safety alert symbol may also include a warning relating to property damage.

A5E33285102-AB Page 2
Qualified personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the
relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and
experience, are capable of identifying risks and avoiding potential hazards when working with these products/systems.
Proper use of SIMATIC products
Note the following:
WARNING
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and
components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation,
assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems. The
permissible ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of
Siemens AG. The remaining trademarks in this publication may be trademarks whose use
by third parties for their own purposes could violate the rights of the owner.
Disclaimer of liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software described. Since varia
nce cannot be
precluded entirely, we cannot guarantee full consistency. However, the information in this pu
blication is reviewed regularly and any necessary
corrections are included in subsequent editions.
Siemens AG
Digital Factory
Postfach 48 48
90026 NÜRNBERG, Germany
Comparison list for S7-300, S7-400, S7-1200, S7-1500
12/2014

A5E33285102-AB Page 3
Overview of the comparison list
•Measuring runtime of instructions and program parts (see below)
•Loading objects to the CPU: which changes and which changed blocks you can load to the CPU in which
operating mode. (next page)
•Overview, requirements, framework conditions and legends to the comparison list (page 7)
•Comparison list for S7-300, S7-400, S7-1200, S7-1500 including CPU 150xS software controller:
Which instructions and functions can be used for which controller family. (from page 8)
•Annex: Optional instructions for SIMATIC Ident
Measuring runtime of instructions and program parts
The runtime of parts of the user program and instructions depend on numerous factors. A tabular list is therefore not possible.
The RUNTIME (runtime measurement) instruction is used to measure the runtime of the entire program, individual blocks or
command sequences. The runtime measurement starts with the first call of the RUNTIME instruction and ends with the
second call.
For the runtime measurement of individual instructions, you use an OB priority >15. As a result, “Monitor online” does not
falsify the runtime. You can find additional information in the SIMATIC STEP 7 online help. Enter “Runtime” in the search box.
Program example in SCL:
“Common_Data“.opt.Last_Cycle := RUNTIME(#Tag_Memory); //Start of runtime measurement, LReal
“speed test FB opt_DB”(ON_2:=“i1”,…);//Runtime measurement through RUNTIME
“Common_Data”.opt.Last_Cycle := RUNTIME(#Tag_Memory); //End of runtime measurement
The Last_Cycle tag contains the time that has elapsed between the previous call and the current call of RUNTIME.

A5E33285102-AB Page 4
Loading objects to the CPU
The table shows which changes and which changed blocks can be loaded in which operating mode.
Very complex programs can prevent loading in RUN mode. Possible solutions:
•Use a memory card with sufficient capacity.
•Select a CPU with sufficient work memory.
•Reduce the number of changed used blocks, constants, PLC tags or data types.
Changes and blocks S7-300 S7-400 S7-1200
as of V4.0
S7-1500
V1.7
S7-1200
V1.0 - 2.1
S7-1200
V2.2 - V3.0
S7-1500
V1.0-V1.6
Changed properties of HW
components
STOP
STOP
STOP
STOP
STOP
STOP
STOP
Added HW components
STOP
STOP
STOP
STOP
STOP
STOP
STOP
New/changed text lists
(Alarms)
RUN
RUN
STOP
STOP
STOP
STOP
STOP
Download number of blocks
RUN (<17)
RUN (<57)
RUN (<21)
RUN
STOP
RUN (<11)
RUN
Download PLC program to
device and reset
STOP
(Reset)
STOP
(Reset)
STOP
(Reset)
STOP
(Reset)
STOP
(Reset)
STOP
(Reset)
STOP
(Reset)
New OB
RUN
RUN
STOP
RUN
STOP
STOP
RUN
Changed OB: Code changes,
change of comments
RUN
RUN
RUN
RUN
STOP
RUN
RUN
OB with changed properties
(e.g. cycle time change)
RUN
RUN
STOP
RUN
STOP
STOP
RUN
Deleted OB
RUN
RUN
STOP
RUN
STOP
STOP
RUN

A5E33285102-AB Page 5
Changes and blocks S7-300 S7-400 S7-1200
as of V4.0
S7-1500
V1.7
S7-1200
V1.0 - 2.1
S7-1200
V2.2 - V3.0
S7-1500
V1.0-V1.6
New FB/FC/DB/PLC data type
(UDT)
RUN
RUN
RUN
RUN
STOP
RUN
RUN
Deleted FB/FC/DB/PLC data
type (UDT)
RUN
RUN
RUN
RUN
STOP
RUN
RUN
Changed FB/FC: Code change,
change of comments
RUN
RUN
RUN
RUN
STOP
RUN
RUN
Changed FB/FC: Interface
change
STOP
STOP
RUN (Init)
RUN (Init)
STOP
STOP
RUN (Init)
Changed DB (no memory
reserve configured): Name/type
of tags changed, tags added or
deleted
RUN (Init)
RUN (Init)
RUN (Init)
RUN (Init)
STOP
STOP
RUN (Init)
Changed DB (memory reserve
configured): New tags added
--
--
RUN
RUN
--
--
RUN (Init)
Changed PLC data type
(UDT)
STOP
STOP
RUN (Init)
RUN (Init)
STOP
STOP
RUN (Init)
Changed PLC tags (added,
deleted, name changed)
RUN
RUN
RUN
RUN
STOP
STOP
RUN

A5E33285102-AB Page 6
Changes and blocks S7-300 S7-400 S7-1200
as of V4.0
S7-1500
V1.7
S7-1200
V1.0 - 2.1
S7-1200
V2.2 - V3.0
S7-1500
V1.0-V1.6
Changed retentivity settings (bit
memory area, DB area)
STOP
STOP
STOP
STOP
STOP
STOP
STOP
Motion Control technology
objects: Changes
to MC servo
cycle clock, change from
asynchronous to cyclic (and
vice
-versa). Changes to
the HW
interface of the TO
--
--
--
STOP
--
--
STOP
(init) means that the current values of the DBs are overwritten by start values during loading.

A5E33285102-AB Page 7
Structure of the comparison list
•Basic instructions
Instructions that you often use such as bit logic operations, timers, counters, mathematic functions
•Extended instructions
Sophisticated instructions for more options, such as date and time, interrupts, alarms, PROFIenergy
•Technological instructions (technology)
Technological functions, such as PID control, Motion
•Instructions for communication (communication)
Instructions for communication, e.g. S7 Communication, Open User Communication
Validity and framework conditions
•SIMATIC STEP 7 as of Version 13, as of service pack 1
•The contents of the S7-1500 column are valid also for SIMATIC S7-1500 Software Controller CPU 150xS
•SIMATIC S7-1200 as of firmware 3.x; SIMATIC S7-1200 supports only LAD, FBD and SCL.
•STL: you have to call some instructions via CALL.
Legend
✔
Applicable
(
✔
)
Applicable with limitations
nn
Not necessary
gray
We recommend that you do not use the grayed out instructions in the S7-1200 or S7-1500, as these instructions
are unsuitable for symbolic addressing or multiple instances. SIMATIC counters and timers are not
recommended, as they are not multi-instance capable.
Xyz
New instruction as of SIMATIC STEP 7 V13.
For this purpose, SIMATIC S7-1200 requires at least firmware 4.0 and SIMATIC S7-1500 at least firmware 1.5
Xyz
New instruction as of SIMATIC STEP 7 V13 SP1.
For this purpose, SIMATIC S7-1200 requires at least firmware 4.1 and SIMATIC S7-1500 at least firmware 1.7
Xyz
Also available as safety instruction in the optional safety package in LAD and FBD.

A5E33284667-AB Page 8
Extended instructions
Basic instructions
Communication
Technology
Instructions in the section "Basic instructions"
Instruction groups
Page
Instruction groups
Page
Instruction groups
Page
General
Bit logic operations
8
8
Comparator operations
Math functions
13
16
Word logic operations
Shift and rotate instructions
27
27
Safety functions
10
Move
17
Load and transfer
28
Timers
11
Conversion operations
20
Legacy
29
Counters
13
Program control operations
23
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
General
✔
✔
✔
✔
Insert network
✔
✔
nn
✔
✔
✔
✔
Insert empty box
✔
nn
nn
✔
✔
✔
✔
Open branch
✔
(
✔
✔
✔
✔
Close branch
✔
)
✔
✔
✔
✔
Insert input
-|
nn
nn
✔
✔
✔
✔
Invert Boolean result
-|NOT|-
-o|
NOT
Bit logic operations
✔
✔
✔
✔
AND logic operation
✔
&
A
&

A5E33285102-AB Page 9
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
✔
✔
✔
✔
OR logic operation
✔
>=1
O
OR
✔
✔
✔
✔
EXCLUSIVE or operation
✔
X
X
XOR
✔
✔
✔
✔
Assignment
-( )-
-[=]
=
:=
✔
✔
Negate assignment
-(/)-
-[/=]
NOT
✔
✔
✔
✔
Reset output
-(R)
-[R]
R
nn
✔
✔
✔
✔
Set output
-(S)
-[S]
S
nn
✔
✔
Set bit field
SET_BF
nn
nn
✔
✔
Reset bit field
RESET_BF
nn
nn
✔
✔
✔
✔
Set/reset flip-flop
SR
nn
nn
✔
✔
✔
✔
Reset/set flip-flop
RS
nn
nn
✔
✔
✔
✔
Scan operand for positive signal edge
-|P|- <Operand>;
FP;
nn
✔
✔
✔
✔
Scan operand for negative signal edge
-|N|-
<Operand>;
FP;
nn
✔
✔
Set operand on positive signal edge
-(P)-
R_TRIG
✔
✔
Set operand on negative signal edge
-(N)-
F_TRIG
✔
✔
✔
✔
Scan Boolean result for positive signal edge
P_TRIG
FP
nn
✔
✔
✔
✔
Scan Boolean result for negative signal edge
N_TRIG
FN
nn

A5E33285102-AB Page 10
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
✔
✔
Set tag on positive signal edge
R_TRIG
✔
✔
Set tag on negative signal edge
F_TRIG
✔
✔
✔
✔
Normally open contact
-||-
nn
nn
nn
✔
✔
✔
✔
Normally closed contact
-|/|-
nn
nn
nn
Safety functions
✔
✔
✔
✔
Safety only: EMERGENCY STOP up to Stop
category 1
ESTOP1
✔
✔
Safety only: Two-hand monitoring
TWO_HAND
✔
✔
✔
✔
Safety only: Two-hand monitoring with enable
TWO_H_EN
✔
✔
Safety only: Parallel muting with two or four
muting sensors
MUTING
✔
✔
✔
✔
Safety only: Parallel muting with two or four
muting sensors
MUT_P
✔
✔
✔
✔
Safety only: 1oo2 (2v2) evaluation of
two
single
-channel encoders combined with a
discrepancy analysis
EV1oo2DI
✔
✔
✔
✔
Safety only: Feedback monitoring
FDBACK
✔
✔
✔
✔
Safety only: Safety door monitoring
SFDOOR

A5E33285102-AB Page 11
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
✔
✔
✔
✔
Safety only: Acknowledgment for
simultaneous reintegration of all
F-I/O /
channels of the
F-I/O of an F-runtime group
after communication errors and/or
F-I/O /
channel errors
ACK_GL
Timers
IEC timers
✔
✔
✔
✔
Generate pulse
TP
TP
✔
✔
✔
✔
Generate on-delay
TON
TON
✔
✔
✔
✔
Generate off-delay
TOF
TOF
✔
✔
Time accumulator
TONR
✔
✔
Time accumulator (start timer)
-(TONR)-
-[TONR]-
nn
nn
✔
✔
Reset timer
-(RT)-
-[RT]-
RESET_TIMER
✔
✔
Load time duration
-(PT)-
-[PT]-
PRESET_TIMER
✔
✔
Generate pulse
-(TP)-
-[TP]-
nn
TP
✔
✔
Start on-delay timer
-(TON)-
-[TON]-
SD
S_ODT
✔
✔
Start off-delay timer
-(TOF)-
-[TOF]-
SF
S_OFFDT

A5E33285102-AB Page 12
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
Legacy
✔
✔
✔
Assign pulse timer parameters and start
S_PULSE
nn
S_PULSE
✔
✔
✔
Assign extended pulse timer parameters and
start
S_PEXT nn S_PEXT
✔
✔
✔
Assign on-delay timer parameters and start
S_ODT
nn
S_ODT
✔
✔
✔
Assign retentive on
-delay timer parameters
and start
S_ODTS nn S_ODTS
✔
✔
✔
Assign off-delay timer parameters and start
S_OFFDT
nn
S_OFFDT
✔
✔
✔
Start pulse timer
-(SP)
-[SP]
SP
nn
✔
✔
✔
Start extended pulse timer
-(SE)
-[SE]
SE
nn
✔
✔
✔
Enable timer
FR
nn
✔
✔
✔
Load timer value
L
nn
✔
✔
✔
Load BCD-coded timer value
LC
nn
✔
✔
✔
Reset timer
-(R)
-[R]
R
nn
✔
✔
✔
Start on-delay timer
-(SD)
-[SD]
SD
nn
✔
✔
✔
Start retentive on-delay timer
-(SS)
-[SS]
SS
nn

A5E33285102-AB Page 13
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
Counters
IEC counters
✔
✔
✔
✔
Count up
CTU
CTU
✔
✔
✔
✔
Count down
CTD
CTD
✔
✔
✔
✔
Count up and down
CTUD
CTUD
Legacy
✔
✔
✔
Assign parameters and count up
S_CU
nn
S_CU
✔
✔
✔
Assign parameters and count down
S_CD
nn
S_CD
✔
✔
✔
Assign parameters and count up / down
S_CUD
nn
S_CUD
✔
✔
✔
Set counter value
-(SC)
-[SC]
nn
nn
✔
✔
✔
Count up
-(CU)
-[CU]
CU
nn
✔
✔
✔
Count down
-(CD)
-[CD]
CD
nn
✔
✔
✔
Enable counter
FR
nn
✔
✔
✔
Load counter
L
nn
✔
✔
✔
Load BCD-coded counter value
LC
nn
✔
✔
✔
Reset counter
R
nn
✔
✔
✔
Set counter
S
nn
Comparator operations
✔
✔
✔
✔
Equal
CMP ==
== I/D/R
=
✔
✔
✔
✔
Not equal
CMP <>
<> I/D/R
<>

A5E33285102-AB Page 14
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
✔
✔
✔
✔
Greater or equal
CMP >=
>= I/D/R
>=
✔
✔
✔
✔
Less or equal
CMP <=
<= I/D/R
<=
✔
✔
✔
✔
Greater than
CMP >
> I/D/R
>
✔
✔
✔
✔
Less than
CMP >
> I/D/R
<
✔
✔
Value within range
IN_RANGE
nn
✔
✔
Value outside range
OUT_RANGE
nn
✔
✔
Check validity
-|OK|-
nn
✔
✔
Check invalidity
-|NOT_OK|-

A5E33285102-AB Page 15
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
Variant
✔
✔
Check data type of a VARIANT tag
TypeOf
✔
✔
Check data type of an ARRAY element of a
VARIANT tag
TypeOfElements
✔
✔
Compare data type for EQUAL with the data type
of a tag
EQ_Type
*)
✔
✔
Compare data type of an ARRAY element for
EQUAL with the data type of a tag
EQ_ElemType *)
✔
✔
Compare data type for UNEQUAL with the data
type of a tag
NE_Type
*)
✔
✔
Compare data type of an ARRAY element for
UNEQUAL with the data type of a tag
NE_ElemType *)
✔
✔
Check for EQUALS NULL pointer
IS_NULL
*)
✔
✔
Check for UNEQUALS NULL pointer
NOT_NULL
*)
*) Application examples for SCL:
IF TypeOf(...) = INT THEN ... // corresponds to EQ_Type
IF TypeOfElements(...) = INT THEN ... // corresponds to EQ_ElemType
IF ... <> NULL THEN ... // corresponds to NOT_NULL
Other operators can also be used instead of “=”, for example: “<>”.
Instead of “INT” you can also use any other data types or data types that you have defined, for example: “REAL”, “Recipe”.
✔
✔
Check for array
IS_ARRAY

A5E33285102-AB Page 16
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
Math functions
✔
✔
Calculate
CALCULATE
nn
nn
✔
✔
✔
✔
Add
ADD
+
+
✔
✔
✔
✔
Subtract
SUB
-
-
✔
✔
✔
✔
Multiply
MUL
*
*
✔
✔
✔
✔
Divide
DIV
/
/
✔
✔
✔
✔
Return remainder of division
MOD
✔
✔
✔
✔
Create twos complement
NEG
NEGI, NEGD
nn
✔
✔
✔
✔
Create ones complement
INVI, INVD
nn
✔
✔
✔
✔
Increment
INC
nn
✔
✔
✔
✔
Decrement
DEC
nn
✔
✔
✔
✔
Form absolute value
ABS
✔
✔
✔
✔
Get minimum
MIN
✔
✔
✔
✔
Get maximum
MAX
✔
✔
✔
✔
Set limit value
LIMIT
✔
✔
✔
✔
Form square
SQR
✔
✔
✔
✔
Form square root
SQRT
✔
✔
✔
✔
Form natural logarithm
LN
✔
✔
✔
✔
Form exponential value
EXP
✔
✔
✔
✔
Form sine value
SIN

A5E33285102-AB Page 17
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
✔
✔
✔
✔
Form cosine value
COS
✔
✔
✔
✔
Form tangent value
TAN
✔
✔
✔
✔
Form arcsine value
ASIN
✔
✔
✔
✔
Form arccosine value
ACOS
✔
✔
✔
✔
Form arctangent value
ATAN
✔
✔
Return fraction
FRAC
FRAC
✔
✔
Exponentiate
EXPT
**
**
Move
(✔)
(✔)
✔
✔
Move value
S7-300/400: Only LAD and FBD
MOVE MOVE :=
✔
✔
Safety only: Write value indirectly to an F-DB
WR_FBD
✔
✔
Safety only: Read value indirectly from a
n F-
DB
RD_FBD
✔
✔
Move data type from ARRAY of BYTE
(deserialize)
Deserialize
✔
✔
Move data type to ARRAY of BYTE (serialize)
Serialize
✔
✔
Move block
MOVE_BLK
✔
✔
Move block uninterruptible
UMOVE_BLK
✔
✔
Move block
MOVE_BLK_VARIANT
✔
✔
Fill block
FILL_BLK

A5E33285102-AB Page 18
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
✔
✔
Do not fill block uninterruptible
UFILL_BLK
✔
✔
Swap
SWAP
ARRAY DB
✔
✔
Read from ARRAY data block
ReadFromArrayDB
✔
✔
Write to ARRAY data block
WriteToArrayDB
✔
✔
Read from ARRAY data block in load memory
ReadFromArrayDBL
✔
✔
Write to ARRAY data block in load memory
WriteToArrayDBL
Variant
✔
✔
Read out VARIANT tag value
VariantGet
✔
✔
Write VARIANT tag value
VariantPut
✔
✔
Get number of ARRAY elements
CountOfElements

A5E33285102-AB Page 19
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200
S7-1500
Description LAD / FBD STL
(not S7-1200) SCL
Read/write access
Recommendation: program symbolically
✔
✔
Read data in little-endian format
READ_LITTLE
✔
✔
Write data in little-endian format
WRITE_LITTLE
✔
✔
Read data in big-endian format
READ_BIG
✔
✔
Write data in big-endian format
WRITE_BIG
✔
✔
Read memory address
PEEK
✔
✔
Read memory bit
PEEK_BOOL
✔
✔
Write memory address
POKE
✔
✔
Write memory bit
POKE_BOOL
✔
✔
Write memory area
POKE_BLK
Legacy
Recommendation: Program symbolically
✔
✔
✔
Move block
BLKMOV
✔
✔
✔
Move block uninterruptible
UBLKMOV
✔
✔
✔
Fill block
FILL
✔
✔
Read field
Recommendation: indexed access to an array
FieldRead
✔
✔
Write field
Recommendation: indexed access to an array
FieldWrite