Delta AS Series Operation Manual page 438

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9.4.5.6 Listen Only Connection
When using Listen only connection, multiple devices can read the same data from one EIP Adapter, but only one device
can write data into the EIP Adapter. This type of connection is the least-frequently used. Setting steps are as follows.
1. Create a dual connection (input/output) between one Exclusive Owner and EIP Adapter.
2. When creating a connection to EIP Adapter, you need to select the corresponding Listen only connection. For
example, when the Exclusive Owner is using Connection 1, you need to select Connection 1_ Listen only.
3. When the connection is established, the Exclusive Owner can read/write data on EIP Adapter. For Listen only
connection, the device can read data that is as what the Exclusive Owner reads. But the device cannot write data
into the EIP Adapter.
4. When the connection of Exclusive Owner and the EIP Adapter is disconnected, the Listen only connection will be
closed too. After the connection of Exclusive Owner and the EIP Adapter is reconnected, the Listen only
connection will be resumed.
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