5
Using the Command Interface
72
CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04
5.2.11
Set_Offline_Mode
Meaning
This call switches between the online and offline mode.
The
online mode
is the normal operating situation for the AS-i master. Here, the
following jobs are processed cyclically:
S
During the data exchange phase, the fields of the output data are transferred to
the slave outputs for all AS-i slaves in the LAS. The addressed AS-i slaves
transfer the values of the slave inputs to the master when the transfer was free
of errors.
S
This is followed by the inclusion phase in which there is a search for the existing
AS-i slaves and newly added AS-i slaves are entered in the LDS or LAS.
S
In the management phase, jobs from the user such as writing parameters are
executed.
In the
offline mode
, the CP 343-2 only processes jobs from the user. (Jobs that
involve the immediate addressing of an AS-i slave are rejected with an error.)
There is no cyclic data exchange with the AS-i slaves.
The OFFLINE=TRUE bit is not permanently stored; in other words, following a
warm/hot restart, the CP 343-2 is once again in the online mode.
Structure of the Job Data in the Send Buffer
Byte
Meaning
Bit 7
Bit 1
Bit 0
0
Command number: 0A
H
1
0
Mode
(0=online
1=offline)
