CPU 72x
24.05.2019
page 15
1.5.1
Operation Modes
The operation modes of the decentralized processor modules are set by means of DIP
switch S2 (DIP 1 to 4).
1.5.1.1
Start-Up Behavior
SW
CPU 72x
(DIP Switch S2)
Fct.
1)
Auto-
start
Program Start-Up from
1
C
No
RAM
2
C
Yes
RAM
3
C
Yes
Backup flash EPROM intern
4
C
Yes
Backup flash EPROM - external
(cassette).
The runtime system (RTS) is also
started from the cassette if it has been
copied by the user. Otherwise, the RTS
is used by the internal flash.
5
W
No
RAM
6
W
Yes
RAM
7
CPU 723-T
CPU 727-T/TH
W
Yes
Backup flash EPROM intern
CPU 725-LT/LTH
C
Yes
Backup flash EPROM intern
8
CPU 723-T
CPU 727-T/TH
W
Yes
Backup flash EPROM - external
(cassette).
Runtime system (RTS) as under SW 4
CPU 725-LT/LTH
C
Yes
Backup flash EPROM - external
(cassette).
Runtime system (RTS) as under SW 4
1)
Fct; W: Warm start , C: Cold start
IMPORTANT
On DIP switch S2 the CPU 725-LT/LTH may only take the positions SW 1
and SW 3. Reason: The CPU 725-LT/LTH has no battery !
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
