Pinetek Networks - Knowledge Base - iol-hat:hw-pro:2_connections
https://doc.pinetek-networks.com/
2026-04-30T00:35:25+00:00Pinetek Networks - Knowledge Base
https://doc.pinetek-networks.com/
https://doc.pinetek-networks.com/lib/exe/fetch.php?media=wiki:logo.pngtext/html2025-08-07T14:53:40+00:00Anonymous (anonymous@undisclosed.example.com)2.1 Connections overview
https://doc.pinetek-networks.com/doku.php?id=iol-hat:hw-pro:2_connections:2.1_connections-overview&rev=1754578420&do=diff
2.1 Connections overview
The following image provides an overview on the available connections and interfaces:
All logic signals (SPI, interrupts) on the 40-pin GPIO operate on 3V3 logic levels.text/html2025-08-07T15:38:56+00:00Anonymous (anonymous@undisclosed.example.com)2.2 Jumper settings
https://doc.pinetek-networks.com/doku.php?id=iol-hat:hw-pro:2_connections:2.2-jumper_settings&rev=1754581136&do=diff
2.2 Jumper settings
Power selection
The IOL HAT Pro generates 5V out of the 24V input provided on X5/X6. The Jumper JP1 selects if the 5V are forwarded to the Raspberry Pi on Pin 2 and Pin 4 of the 40-pin GPIO connector. Setting the jumper will power the Raspberry Pi from the IOL HAT.text/html2025-08-07T15:39:39+00:00Anonymous (anonymous@undisclosed.example.com)2.3 40-pin GPIO to Raspberry Pi and jumper settings
https://doc.pinetek-networks.com/doku.php?id=iol-hat:hw-pro:2_connections:2.3_40-pin-gpio&rev=1754581179&do=diff
2.3 40-pin GPIO to Raspberry Pi and jumper settings
This connector provides the connection to the Raspberry Pi over the standard 40-pin GPIO connector:
This connector is implemented as stack-through, i.e. up to two IOL HAT Pros can be connected on top of each other. Other additional expansion boards can be connected via the stack-through connector if the pins are not used by the IOL HAT Pro.text/html2025-08-07T15:43:41+00:00Anonymous (anonymous@undisclosed.example.com)2.4 24V-Input and Raspberry Power Supply
https://doc.pinetek-networks.com/doku.php?id=iol-hat:hw-pro:2_connections:2.4_24v-input&rev=1754581421&do=diff
2.4 24V-Input and Raspberry Power Supply
24V Input
The 24V power supply input is used for the L+ supply of the SDCI ports and the supply of the Raspberry Pi (if JP3 is set).
The logic part of the module is supplied over the 3V3 on the 40-pin GPIO connector. This supply comes from the Raspberry Pi.text/html2025-08-07T15:00:48+00:00Anonymous (anonymous@undisclosed.example.com)2.5 IOL Ports and LEDs
https://doc.pinetek-networks.com/doku.php?id=iol-hat:hw-pro:2_connections:2.5_sdci-leds&rev=1754578848&do=diff
2.5 IOL Ports and LEDs
Both IOL ports use the same pin-out. For industrial use, the signal lines on the SDCI ports have improved surge immunity. Each port features a bi-color LED for signalization of the operation mode. The typical M12 cable coloring scheme for pre-configured cables is listed.text/html2025-08-07T15:34:35+00:00Anonymous (anonymous@undisclosed.example.com)2.6 Stacking of IOL HAT Pro
https://doc.pinetek-networks.com/doku.php?id=iol-hat:hw-pro:2_connections:2.6_stacking&rev=1754580875&do=diff
2.6 Stacking of IOL HAT Pro
Two IOL HAT Pro can be stacked on top of each other:
To ensure proper operation, set JP1 to Port 1+2 on one IOL HAT Pro and JP1 to port 3+4 on the other IOL HAT Pro. If you decide to control the IOL enable through the Raspberry Pi (GPIO23, Jumper JP2), the enable signal applies for both IOL HAT Pro.