
OPERATION IN THE ETHERNET/IP NETWORK
6 OPERATION IN THE ETHERNET/IP NETWORK
6.1 CYCLIC DATA
Cyclic data is the data normally used for status monitoring and equipment control. For EtherNet/IP protocol, the
interface supports an I/O connection that allows communication up to 50 input words and 20 output words.
It is necessary the configuration to be made both at the slave and master.
6.1.1
Input words
The SSW900 soft-starter has a reading area with 50 16-bit words available for cyclic data exchange of communication
networks. The data available in the reading area (Input) is sent to the master of the network. This area is shared
between the two Slots.
To map an object in the reading area, follow the steps below.
1. Configure parameter C8.1.1.1 (Slot 1) or C8.1.1.3 (Slot 2). Those parameters indicate which of the reading
words starts the input area for the specific Slot.
2. Configure on parameter C8.1.1.2 (Slot 1) or C8.1.1.4 (Slot 2) the quantity of input words which must be
transmitted via network.
3. Parameters C8.1.1.5 to C8.1.1.54 enable to configure the data that must be provided on the reading words.
Those parameters must contain the network addresses (Net Id) of the data that must be transmitted on the
respective reading words. The Net Id list is available on the table A.2. Consider the size of each parameter
mentioned in this list when programming each word.
Example
The example below presents a configuration for Slot 2. Considering the following parameters to be mapped:
S5.1.1 Status Word SSW.
S1.2.4 Main Line Voltage Average.
S1.1.4 Current Average.
S1.5.4 Output Power & P.F. P. F..
Searching parameter information on the table A.2:
Mapped Parameter
Net Id
Size
Qty Mapped Words
Example Value
S5.1.1 Status Word SSW
680
16bit
1
99 = 0063h
S1.2.4 Main Line Voltage Average
4
16bit
1
2186 = 088Ah
S1.1.4 Current Average
24
32bit
2
23 = 00000017h
S1.5.4 Output Power & P.F. P. F.
8
8bit
1
14 = 0Eh
Therefore, the configuration must be performed as shown below:
1. C8.1.1.3 Data Read Slot 2 1st Word = 26
→
first word transmitted via network is the word #26.
2. C8.1.1.4 Data Read Slot 2 Quantity = 5
→
sum of the column “Qty mapped words”.
3. Table 6.1 presents the configuration parameters of the words and the content of the reading words.
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