User manual

4. Appendices
Appendix A Differences between EMG model devices
EMG10: Allows only 1 TCP connection.
EMG12 Allows 4 TCP connections at the same time.
EMG02 It is similar to EMG12 but allows request only sent to MODBUS addresses 1
and 2. This model also doesn't support the MODBUS Tunnel Mode.
Appendix B Query Interval and TCP Time-Out
When querying on the Ethernet/MODBUS Gateway devices using the client software,
the query interval must not exceed 1.5 minutes. After 1.5 minutes, a counter in the
device will be activated and disconnect the network connection. In applications
requiring a query interval more than 1.5 minutes, it is recommended to set the client
software so that it checks the connection status before every query and reconnect if the
connection is down.