The sat-nms IO-FEP2 offers multiple ways to control it from a remote site. It may be controlled remotely by Modbus/TCP, SNMP, a text based protocol based on HTTP or through a serial RS232 interface.
The Modbus/TCP interface gives complete control over the IO-FEP2, including all setup / installation parameters. It is recommended to use this interface for new applications. The SNMP, HTTP and RS232 remote interfaces only provide a subset of parameters which covers all operational settings and status values, but implements no setup parameters.
The SNMP, HTTP and RS232 remote interfaces are legacy interfaces which provide full backward compatibility to previous versions of the sat-nms IO-FEP and IO-FEP-E.