Operating Mode Selection - Siemens SIMATIC C7-613 Manual

Special Features of the C7-613
3.1

Operating Mode Selection

Siemens
Mode selector
keys with
LEDs
SF
5 VDC
Status and
FRCE
error LEDs
RUN
STOP
Figure 3-1 C7-613 Operating Mode Keys
Changing the C7-613 Operating Mode
The C7-613 modes RUN, STOP and MRES are selected by means of the mode
selector keys:
The C7-613 carries out a mode change whenever the key is pressed. The RUN
key (upper key) must be pressed for at least 500 ms for the transition to take place
and to light up the relevant LED. The key LEDs do not reflect the C7-613 operating
mode, but rather indicate the setting of the operating mode keys.
The key function can be activated and deactivated by means of the external
authorization inputs AT1 and AT2 to prevent the C7-CPU operating modes from
being changed in an uncontrolled manner (for example, by unauthorized operating
staff).
3-2
SIMATIC C7
SIMATIC C7
SHIFT
C7-613 Control System
A5E00138934-03