ACE969FO-2 SLAN output is a serial port only and therefore only supports serial protocols. In this case, these protocols are Modbus RTU, DNP3 and IEC60870-5-103 protocols. Since Modbus TCP/IP is an Ethernet protocol, it is obviously not supported by the ACE969FO-2 serial communications accessory.
For more information, there is a chart in the "Communication Accessories" section of the Sepam 20, 40, 80 "Digital Protection Relays" catalogue. A copy of this chart from the 2010 version of this catalogues is reproduced below for convenience:
Keywords: Ethernet communications, serial communications, fiber ethernet, fiber serial, fiber optic, connection port, support, Modbus RTU over Ethernet, DNP over Ethernet, IEC103, Modbus TCP
Legacy KB System (APS) Data: RESL199704 V3.0, Originally authored by DaMi on 08/26/2009, Last Edited by DaMi on 02/02/2010
Related ranges: ACE 9XX