Siemens Simatic S7 Series System Manual

Program instructions
7.17 Timer
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
341
TONR retentive On-delay timer example
LAD
STL
10 ms TONR timer T1 times out at
PT = 1 s (100 x 10 ms).
Network 1
LD I0.0
TONR T1, +100
T1 bit is controlled by timer T1.
Q0.0 is ON after the timer accumulates
a total of 1 second.
Network 2
LD T1
= Q0.0
TONR timers must be reset by a Reset
instruction with a T address.
Reset timer T1 (current value and bit)
when I0.1 is on.
Network 3
LD I0.1
R T1, 1
Timing Diagram

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.