500 Series I/O Modules

The 500 Series I/O Modules are a family of input and output boards manufactured by Modicon for programmable logic controller systems. These modules handle field-level signal interfacing between a PLC and connected equipment, converting and routing discrete and analog signals.

The series covers a broad range of voltage and signal types, including AC and DC input and output boards from 5VDC through 220VAC, with intermediate ratings such as 12VDC, 24VAC, 28VDC, 48VAC, 48VDC, 115VAC, 150VDC, and wide-range 9–56VDC boards.

Module Types

• Input boards and cards for a variety of AC and DC voltage levels
• Output boards and modules covering the same voltage range
• Relay modules for switching and control functions
• Specialty boards, including encoder input and proximity latch boards

Common part number prefixes in this series fall within the B550–B596 range, with variant suffixes distinguishing configuration options.