Siemens Simatic S7 Series System Manual

PID loops and tuning
11.7 PID Tune control panel
S7-200 SMART
478 System Manual, 09/2015, A5E03822230-AC
● Sampling: In the "Sampling" area, you can select the graphical display sampling rate from
1 to 480 seconds per sample.
You can freeze the graph by clicking the "Pause" button. Click the "Resume" button to
resume sampling data at the selected rate. To clear the graph, select "Clear" from the
right-mouse button within the graph.
● Advanced Options: You can use the "Options" button to further configure parameters for
the auto-tuning process. (See the figure below.)
From the advanced screen, you can check the box that causes the auto-tuner to
automatically determine the values for the Hysteresis and Deviation (default setting), or
you can enter the values for these fields that minimize the disturbance to your process
during the auto-tune procedure.
In the "Dynamic Response" field, use the dropdown button to select the type of loop
response (Fast, Medium, Slow, or Very Slow) that you wish to have for your process.
Depending upon your process, a fast response may have overshoot and would
correspond to an underdamped tuning condition. A medium speed response may be on
the verge of having overshoot and would correspond to a critically damped tuning
condition. A slow response may not have any overshoot and would correspond to an
overdamped tuning condition. A very slow response may not have overshoot and would
correspond to a heavily overdamped tuning condition.
Once you have made the desired selections, click OK to return to the main screen of the
PID Tune Control Panel.

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.