Siemens Simatic S7 Series System Manual

Program instructions
7.1 Bit logic
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
163
7.1.12
Bit logic output examples
LAD
STL
Output instructions assign bit values to external I/O
(I, Q) and internal memory (M, SM, T, C, V, S, L).
Network 1
LD I0.0
= Q0.0
= Q0.1
= V0.0
Set a sequential group of 6 bits to a value of 1. Spec-
ify a starting bit address and how many bits to set.
The program status indicator for Set is ON when the
value of the first bit (Q0.2) is 1.
Network 2
LD I0.1
S Q0.2, 6
Reset a sequential group of 6 bits to a value of 0.
Specify a starting bit address and how many bits to
reset. The program status indicator for Reset is ON
when the value of the first bit (Q0.2) is 0.
Network 3
LD I0.2
R Q0.2, 6
Sets and resets 8 output bits (Q1.0 to Q1.7) as a
group.
Network 4
LD I0.3
LPS
A I0.4
S Q1.0, 8
LPP
A I0.5
R Q1.0, 8
The Set and Reset instructions perform the function
of a latched relay. To isolate the Set/Reset bits,
make sure they are not overwritten by another as-
signment instruction. In this example, Network 4 sets
and resets eight output bits (Q1.0 to Q1.7) as a
group. In RUN mode, Network 5 can overwrite the
Q1.0 bit value and control the Set/Reset program
status indicators in Network 4.
Network 5
LD I0.6
= Q1.0

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.