Siemens Simatic S7 Series System Manual

Program instructions
7.4 Compare
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
195
Example compare values
LAD
STL
Activate I0.1 to load V memory addresses
with low values that make the compari-
sons FALSE and that set the status indi-
cators OFF.
Network 1
LD I0.1
MOVW -30000, VW0
MOVD -200000000, VD2
MOVR 1.012E-006, VD6
Activate I0.2 to load V memory addresses
with high values that make the compari-
sons TRUE and that set the status indica-
tors ON.
Network 2
LD I0.2
MOVW +30000, VW0
MOVD -100000000, VD2
MOVR 3.141593, VD6
Activate I0.3 to perform comparisons.
The Integer Word comparison tests to
find if VW0 > +10000 is TRUE.
You can also compare two values stored
in variable memory like VW0 > VW100.
Network 3
LD I0.3
LPS
AW> VW0, +10000
= Q0.2
LRD
AD< -150000000, VD2
= Q0.3
LPP
AR> VD6, 5.001E-006
= Q0.4
See also
Constants (Page 69)

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.