View source for S7-SoftPLC:CPU Parameters

[[Image:Konf_CPUPara.png|frame|none]]

In this window the basic settings of ''S7-SoftPLC'' are performed.


'''Load PLC-program at startup'''

The currently saved PLC-program, stored in &quot;S7.BIN&quot; in the ''S7-SoftPLC'' installation folder, is loaded into ''S7-SoftPLC'', as soon as it is started. The display of the jitter is reset.

If the option &quot;Load PLC program at startup&quot; is selected, the PLC-program saved in the file &quot;S7.BIN&quot; is loaded into ''S7-SoftPLC'' when S7-SoftPLC is started. The starting conforms to the start-up of a hardware-PLC after a voltage-return. Therefor the organisation block OB 101 is processed first. After that the cyclic program-processing starts with OB 1. The signal states of flags(M), timers(T) and counters(C) are restored into ''S7-SoftPLC'', if this is set in the hardware configuration.

If any problems should occur at the next start, delete the file &quot;S7.BIN&quot; in the installation directory of ''S7-SoftPLC''. Such problems may occur, if the saving process has been disturbed. In such case the PLC-program has to be downloaded again with the programming unit. In such case the flags(M), timers(T) and counters(C) are in their initial state.


'''Save PLC programm at shutdown'''

The PLC-programm located in ''S7-SoftPLC'' is saved into the file &quot;S7.BIN&quot; in the ''S7-SoftPLC'' installation folder, as soon as ''S7-SoftPLC'' is terminated. The signal states of flags(M), timers(T) and counters(C) are saved as well.


'''Retain M/T/C (Select the areas with the S7-Hardware-Configurator)'''

The memory is kept remanent for M,T,C. (starting at byte 0 up to the value set with the hardware configuration)


'''Permit saving in RUN'''

Permits saving without stopping the PLC.


WARNING: IF THE PROGRAM IS SAVED DURING A RUNNING OPERATION, THE CYCLE TIME CAN INCREASE.


'''Single processor mode (also Hyperthreading CPUs)'''

Sets the single processor mode fixed. With real double or dual-core processors the PLC has got 25% of the possible computing time. This option should be activated with Hyperthreading processors, otherwise the processor capacity and the cycle time may vary.


'''Order number'''

Permits to select the order number of the emulated PLC. Older CPUs can be chosen to stay compatible with existing projects. Alternatively Profibus and Profinet types can be set, if the hardware configuration will be made with STEP®7. There are also types available, which are suitable with TIA.


'''Key switch position'''

{| 
|-
|style="width: 7em"| RUN || In this mode ''S7-SoftPLC'' processes the PLC-program.
|-
| RUN-P || In this mode ''S7-SoftPLC'' processes the PLC-program. The PLC-program can be modified during operation.
|}


'''Operating system'''

Selection of used operating system. Everything newer uses the XP option.


'''Language'''

Selection of user interface language.


'''MPI via serial interface'''

The connection to ''S7-SoftPLC'' can be established via the selected port.


'''PLC memory size'''

The size of the ''SoftPLC S7-416'' load memory. The size of the ''SoftPLC S7-315'' load memory is limited to 256 kbyte.


'''PLC : Windows processor time (ms)'''

Partitioning of the PC-CPU processing time between ''S7-SoftPLC'' and Windows<sup>®</sup>.


'''Default'''

Restores the default settings.