The EXP4040 is an expansion board specifically designed for the FMD-Series and F-Series PLCs. It adds additional 40 digital inputs and 40 digital outputs. Of these expansion I/Os, 16 of the expansion digital inputs are TTL levels, and 16 of the expansion digital outputs are 5V HCMOS logic level type.


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  • Key Features
  • Specification
  • Documentation
  • Application
  • Review
  • Compatible PLCs
EXP4040 can be cascaded or mixed with EXP1616 to provide up to maximum of 128 digital inputs and 128 digital outputs for any FMD or F-series PLC model.

EXP4040 is also identical in size to the FMD and F-Series PLCs. This allows one or more of the expansion board(s) to be “stacked” on top or below a T100MD1616+ PLC for applications where the controllers must be fitted within a very tight space.
- Digital Input: 40 (24x NPN @ 24VDC, 16x 5V HCMOS)
- Digital Output (peak current): 40 (24x 1A @ 24V DC, 16x 5V HCMOS)
- Dimension (L x W x H) 5.0" x 4.5" x 0.8"
- Power Source connected to same 12-24V power supply as the PLC
EXP4040 Installation Guide (View PDF)
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