Distributed I/O (DIO)
Original instructions
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Overview
Quantum DIO is implemented over a Modbus Plus network. The CPU or NOM modules may be the network head via their Modbus Plus ports.
Quantum DIO Modbus Plus drop adaptors are specifically designed to link Quantum I/O modules to the head via twisted pair shielded cable (Modbus Plus). The DIO drop modules also provide the I/O with power (maximum 3 A) from a 24 VDC or a 115/230 VAC source. Each DIO network supports up to 63 distributed drops using repeaters.
NOTE: For detailed information see Experts and Communication Reference Manual, Part Quantum Distributed I/O (DIO) Drop Modules.