This page describes the Plug & Program PNP-LED4L & PNP-LED4R LED Tristate indicator modules
Quick Look
- Each PNP-LED4x module provides 4 pairs of LED indicators
- Each Indicator pair can indicate 3 states
- Off (Tristate): both LED’s are off
- Output 1: Yellow (Top) LED is on
- Output 0: Green (Bottom) LED is on


- Combining 1 of each module allows 2 bytes to be visually indicated, 1 across the top, 1 across the bottom
- PNP-LED4L has IO-IN on the left with LEDs numbered from right to left
- PNP-LED4R has IO-IN on the right with LEDs numbered from right to left
IO Connectors
- IO-In
Plug & Program Resources
- Schematic
- PCB
- BOM