Flexible Automation
Central processing unit ZS400
4-26
1070 072 143-101
4.5 Operating modes
The ZS400 distinguishes between the following operating modes which
have different effects when cold starting and restarting the control:
S114: Software switch S114 in system range
Buffer battery
Memory card Valid PLC program Retention User data memory
Yes
Buffer battery in the
power supply mod
No Cold start / Restart
Set S114 to 0000H
PLC pro
ram of internal
Retention Cold start / Restart
With retentive data, data
field and fixings.
RAM memory is valid
No
retention
Cold start / Restart
Deletion of all retentive
data and fixings with ex
ception of data field
Yes
1
Cold start / Restart
Set S114 to 0001H
PLC program of memory
Retention Cold start / Restart
With retentive data, data
field and fixings
card is valid
No
retention
Cold start / Restart
Deletion of all retentive
data and fixings with ex
ception of data field
No
No buffer battery
necessary
Jumper J2 at power
supply module in
position 1-2.
Yes
Memory card
must always
be inserted.
First start
PLC program of memory
card is valid
S114 is then set to 0000H
automatically
Restart
Retention First start
Deletion of all retentive
data, data field and fixings
Restart
With retentive data, data
field and fixings
S114 must be set to 0000H
or 0001H according to the
desired restart.
No
retention
First start
Deletion of all retentive
data, data field and fixings
Restart
Deletion of all retentive
data and fixings with ex
ception of data field
1
With firmware version 101, a first start is carried out automatically from the inserted memory card
after battery failure. From firmware version 102 onwards, the battery failure must first be acknowledged using
the Reset key on the front panel of the power supply module.
Fig. 4-21 Operating modes