8 Using the Data Record Interface
141
IE/AS
−
INTERFACE LINK PN IO
as of hardware version 1, as of firmware version V2.0
Release 08/2018
C79000
−
G8976
−
C216
−
03
8.2.1.8
Set_Offline_Mode
Meaning
This call switches between the online and offline mode.
Online 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 activated AS-i slaves. 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.
Offline mode
In offline mode, the IE/AS-i LINK only processes jobs from the user (jobs that bring
about an immediate response on an AS-i slave are rejected as errors). There is no
cyclic data exchange with the AS-i slaves.
Bit assignment
The following bit assignment applies to the online/offline mode:
S
Online mode: “0”
S
Offline mode: “1”
The OFFLINE=TRUE bit is not permanently stored; in other words, following a
cold/warm restart, the IE/AS-i LINK is once again in online mode.
Structure of the RecordDataWrite service − Index 18
Byte
Meaning
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Version_hi = 0x00
1
Version_lo = 0x00
2
0
0
0
0
0
0
0
Mode
3
Reserved 0x00
