Answer Posted / rajesh j

PROFIBUS - Siemens products
MODBUS - Modicon products
RIO - Remote I/O bus (general)
DH+ - Allen Bradley products (Generally)
FIELD BUS - Open bus communication in DCS
FF BUS - Foxboro Field Bus (foxboro products)
CAN Bus - ALSTOM products (Pls confirm)
RS232/ RS485 /RS422
HART - Rosemount products
BT - Brain Terminal for Yokogawa products
Others - Ethernet
TCP/IP

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