Siemens 6AV6651-7KA01-3AA4 - S7-1200 + KTP400 Basic Starter Kit 6AV6651-7KA01-3AA4 Benutzerhandbuch

Produktcode
6AV6651-7KA01-3AA4
Seite von 364
Easy to create the device configuration 
 
5.5 Configuring the operation of the CPU and modules 
 
Easy Book 
76
 
Manual, 03/2014, A5E02486774-AF 
5.5 
Configuring the operation of the CPU and modules 
To configure the operational parameters for the CPU, select the CPU in the Device view and 
use the "Properties" tab of the inspector window.  
 
 
You can configure the following CPU properties: 
 
PROFINET IP address and time 
synchronization for the CPU 
 
Startup behavior of the CPU following an OFF-
to-ON power transition 
 
Local (on-board) digital and analog I/O, high-
speed counters (HSC), and pulse generators 
 
System clock (time, time zone and daylight 
saving time) 
 
Read/write protection and password for 
accessing the CPU 
 
Maximum cycle time or a fixed minimum cycle 
time and communications load 
 
Web server properties 
Configuring the STOP-to-RUN operation of the CPU 
Whenever the operating state changes from STOP to RUN, the CPU clears the process 
image inputs, initializes the process image outputs, and processes the startup OBs. 
(Therefore, any read accesses to the process-image inputs by instructions in the startup OBs 
will read zero rather than the current physical input value.) To read the current state of a 
physical input during startup, you must perform an immediate read. The startup OBs and any 
associated FCs and FBs are executed next. If more than one startup OB exists, each is 
executed in order according to the OB number, with the lowest OB number executing first.   
The CPU also performs the following tasks during the startup processing. 
●  Interrupts are queued but not processed during the startup phase 
●  No cycle time monitoring is performed during the startup phase 
●  Configuration changes to HSC (high-speed counter), PWM (pulse-width modulation), and 
PtP (point-to-point communication) modules can be made in startup 
●  Actual operation of HSC, PWM, and point-to-point communication modules only occurs in 
RUN 
After the execution of the startup OBs finishes, the CPU goes to RUN mode and processes 
the control tasks in a continuous scan cycle.      
Use the CPU properties to configure how the CPU starts up after a power cycle.