An industrial control system comprising: a backplane (12, 120); a plurality of first electromagnetic connectors (24, 100) coupled with the backplane (12, 120), each first electromagnetic connector (24, 100) configured to form a first magnetic circuit portion comprising: a first core member; and a first coil disposed of the first core member, the first coil comprising a planar winding disposed of a printed circuit board, the first electromagnetic connector (24, 100) configured to mate with a second electromagnetic connector (16, 100) included within a module, the second electromagnetic connector (16, 100) configured to form a second magnetic circuit portion and comprising a second core member and a second coil disposed of the second core member, the first core member and the second core member configured to couple the first coil to the second coil with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion when the first electromagnetic connector (24, 100) is mated with the second electromagnetic connector (16, 100), the magnetic circuit configured to induce a signal in the second coil when the first coil is energized while maintaining galvanic isolation between the module and the backplane (12, 120). a backplane (12, 120); a plurality of first electromagnetic connectors (24, 100) coupled with the backplane (12, 120), each first electromagnetic connector (24, 100) configured to form a first magnetic circuit portion comprising: a first core member; and a first coil disposed of the first core member, the first coil comprising a planar winding disposed of a printed circuit board, the first electromagnetic connector (24, 100) configured to mate with a second electromagnetic connector (16, 100) included within a module, the second electromagnetic connector (16, 100) configured to form a second magnetic circuit portion and comprising a second core member and a second coil disposed of the second core member, the first core member and the second core member configured to couple the first coil to the second coil with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion when the first electromagnetic connector (24, 100) is mated with the second electromagnetic connector (16, 100), the magnetic circuit configured to induce a signal in the second coil when the first coil is energized while maintaining galvanic isolation between the module and the backplane (12, 120). a first core member; and a first coil disposed of the first core member, the first coil comprising a planar winding disposed of a printed circuit board, the first electromagnetic connector (24, 100) configured to mate with a second electromagnetic connector (16, 100) included within a module, the second electromagnetic connector (16, 100) configured to form a second magnetic circuit portion and comprising a second core member and a second coil disposed of the second core member, the first core member and the second core member configured to couple the first coil to the second coil with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion when the first electromagnetic connector (24, 100) is mated with the second electromagnetic connector (16, 100), the magnetic circuit configured to induce a signal in the second coil when the first coil is energized while maintaining galvanic isolation between the module and the backplane (12, 120).