Aport-212 User Guide
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4.4 Master RTU / ASCII Mode
When Modbus Master are serial devices, up to 32 TCP slave devices can be accessed by a serial
Modbus Master. Aport-212 uses UID to decide the IP address and port of the TCP slave device to
connect to. Except function is also available to serial Master when there is unknown TCP slave or
connection is not established.
Exception code: 0x0A
1. Unknown address of TCP slave
2. TCP slave is not connected
Master RTU/ASCII block diagram
4.5 S2E Gateway
Aport-212 also supports Serial to Ethernet conversion when you select S2E mode. In the S2E mode,
data is transferred to and from serial to Ethernet interface without any data conversion. Therefore
Aport-212 provides a transparent data tunnel between serial device to Ethernet device. Aport-212
supports both TCP server and TCP client mode. In TCP server mode, Aport-212 waits for TCP client
device to initialize the connection. On the other hand in TCP client mode, Aport-212 starts connection
to the other TCP server.
Summary of Contents for Aport-212
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