Siemens Simatic S7 Series System Manual

PID loops and tuning
11.7 PID Tune control panel
S7-200 SMART
480 System Manual, 09/2015, A5E03822230-AC
The loop responds to the same setpoint change after applying the values determined by the
auto-tune process using the selection for a fast response. Notice that for this process there is
no overshoot, but there is just a little bit of ringing.
To eliminate the ringing at the expense of the speed of response, select a medium or a slow
response and re-run the auto-tuning process.
After you have a good starting point for the tuning parameters for your loop, you can use the
control panel to tweak the parameters. Then you can monitor the loop's response to a
setpoint change. In this way, you can fine tune your process for an optimum response in
your application.
To simplify the use of PID loop control in your application, STEP 7-Micro/WIN SMART
provides a PID wizard (Page 269) to configure your PID loops.

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.