Siemens Simatic S7 Series System Manual

Program instructions
7.8 Math
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
261
Integer operations from the LAD example
IN1
IN2
OUT
Add data
40
+
60
=
100
Data address
AC1
AC0
AC0
Multiply data
40
*
20
=
800
Data address
AC1
VW100
VW100
Divide data
4000
/
40
=
100
Data address
W200
VW10
VW200
Example: Real math instructions
LAD
STL
Network 1
LD I0.0
+R AC1, AC0
*R AC1, VD100
/R VD10, VD200
Real number operations from the LAD example
IN1
IN2
OUT
Add data
4000.0
+
6000.0
=
10000.0
Data address
AC1
AC0
AC0
Multiply data
400.0
*
200.0
=
80000.0
Data address
AC1
VD100
VD100
Divide data
4000.0
/
41.0
=
97.5609
Data address
VD200
VD10
VD200

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.