schmersal PROTECT-PSC - Page 63

System description
3
Instruction Manual PROTECT-PSC
V 2.6R01 / 04.19
3–31
3.7.3 Operating elements
The RUN/W.E. switch does not have the function of a start and restart lock. The
start and restart lock must be implemented in the user program.
RUN/W.E. switch
The operating mode of the CPU module can be selected us-
ing this switch. 2 operating modes are available:
W.E. = the user program can be transferred (Write
Enable)
Run = the user program is in operation.
After switching on the supply voltage the internally moves to the RUN operating
mode (if no errors occur during the self-check) The user program only starts
automatically, however, if the RUN/W.E. switch is similarly set to RUN.
R.S. (RESTART) switch
The operating mode can be altered using the RUN/W.E switch and the R.S. switch.
The relationship is described in Table 3-12.
F
F
i
i
g
g
u
u
r
r
e
e
3
3
-
-
1
1
1
1
R
R
U
U
N
N
/
/
W
W
.
.
E
E
.
.
s
s
w
w
i
i
t
t
c
c
h
h