PROFINET
X
NOTE!
For the changes in this parameter be effective, the equipment must be powered off and on again, or
an update must be performed by P0899.
8.3
INDICATION LEDS
In addition to the LEDs next to the Ethernet connectors, the smart relay SRW01-ETH has the NET LED on the front
of the product to indicate network status. For the PROFINET IO protocol, it has the following indications:
Table 8.2:
Net LED
State
Description
Off
No power or no connection with controller.
Green, solid
Connection with controller established, controller in RUN mode.
Green, flashing
Connection with controller established, controller in STOP mode.
8.4
CYCLIC DATA
Cyclic data is the data normally used for status monitoring and equipment control. For PROFINET protocol, the
interface supports an I/O connection that allows communication up to 20 input words and 20 output words.
It is necessary the configuration to be made both at the slave and master.
8.5
ACYCLIC DATA
In addition to the cyclic data, the PROFINET protocol also provides acyclic data, mainly used to communicate diag-
noses and parameterization data. For the SRW01-ETH smart relay, the parameter list is available using this commu-
nication method.
The PROFINET protocol defines the following structure to address the components for network configuration:
AR (Application Relation)
API (Application Process Identifier)
Slot
Subslot
The AR and API are used to identify the Ethernet module during the network configuration steps. Slot/subslot are not
relevant for accessing acyclic data. Once the module is identified, the parameters are accessed indicating the index
and the data length:
Index: represents the parameter number;
Length: the length of data, in bytes. All device parameter are 2 bytes in length (Word).
The data is transmitted as an integer value, without the indication of the decimal places.
8.6
XML FILE – GSDML
Each device on an PROFINET network has an GSDML configuration file, which contains information about the device
functions on the network. This file is used by a master or configuration software to program devices present at
PROFINET network.
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