4.6.2 Accessing I/O area
The EtherNet/IP coupler determines automatically the modules on the System SLIO bus
and generates from this the number of input and output bytes. Information concerning the
I/O allocation of a module may be found in the corresponding manual. The position
(offset) of the input respectively output bytes within the input respectively output data
results from the order of the modules (EtherNet/IP slot 1 ... 64). By means of the base
address, which is to be preset in the EtherNet/IP scanner for the bus coupler and the
offset you may access the input or output data of a module. During operation the
EtherNet/IP coupler cyclically reads the input data of the peripheral modules and serves
for the last state of these data for the EtherNet/IP scanner. Output data, which the
EtherNet/IP coupler has received from the EtherNet/IP scanner, were directly transferred
to the modules, as soon as they were received.
n
Interrupting a connection
–
If the connection is aborted or the Ethernet connection is disconnected with disa-
bled parameter
Enable default values
, BASP is activated.
–
If the connection is aborted or the Ethernet connection is disconnected with ena-
bled parameter
Enable default values
, the last written output value is retained.
n
PowerOn
–
With PowerOn BASP is active.
–
When the IM 053-1IP00 is power supplied, PWR LED gets on.
BASP - BASP (
B
efehls-
A
usgabe-
Sp
erre) means command output disable.
If BASP is active, all module outputs are switched off and the inputs are not
read.
Behavior of the outputs
VIPA System SLIO
Deployment
Accessing the System SLIO > Accessing I/O area
HB300 | IM | 053-1IP00 | en | 19-03
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