
STARTUP GUIDE
Input instance: 100
Output instance: 150
Once configured, the NS LED will be on in green. It is in this condition that cyclic data exchange effectively occurs
between the slave and the master of the network.
7.4 COMMUNICATION STATUS
Once the network is assembled and the master programmed, it is possible to use the LEDs and parameters of the
equipment to identify some status related to the communication.
The MS, NS and Link LEDs provide information about the status of the interface and communication.
The parameter S5.5.2 indicates the status of communication between the device and the network master.
The master of the network must also supply information about the communication with the slave.
7.5 OPERATION USING PROCESS DATA
Once the communication is established, the data mapped in the I/O area is automatically updated between master
and slave. Among the main parameters that can be used to control the device, we can mention:
S5.1.1 Status Word SSW.
S5.2.5 Command Word Slot1.
S5.2.6 Command Word Slot2.
It is important to know these parameters to program the master as desired for the application.
7.6 ACCESS TO PARAMETERS – ACYCLIC MESSAGES
Besides the I/O data (cyclic) communication, the EtherNet/IP protocol also defines a kind of acyclic telegram (
explicit
messages
), used especially in asynchronous tasks, such as parameter setting and configuration of the equipment.
The EDS file provides the full parameter list of the equipment, which can be accessed via
explicit messages
. The
item 6.2 describes how to address the parameters of the soft-starter SSW900 via acyclic messages.
SSW900 | 30