Application Note: WL-MIO-AN-20000

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WL-MIO Hardware Introduction

This application note describes the hardware used in the WL-MIO system.

• The VPE-6000 Backplane
• I/O Modules

Please refer to the other Appplication Notes under the "Applications" menu for more specific details on the hardware and available software.

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The VPE-6000 Backplane

The backplane is the heart of the WL-MIO system. There are no active parts, only the terminal blocks, the I/O module sockets complete with card guides, and the backplane ID jumpers. The backplane wiring is divided into two sections:

• The Field Wiring side - each module has 12 I/O terminal blocks and 3 Shield terminal blocks
• The Bus Power and CAN bus communication side

Typical WL-MIO System Field Wiring Diagram

Every signal on the backplane headers is doubled for redundancy.

View and download the VPE-6000 schematic.

Please refer to the individual module specifications for more details

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The WL-MIO I/O Modules

Each WL-MIO module has exactly the same footprint and wiring connections. The VPE-6020 REaspberry Pi carrier module has a slightly different geometry to accomodate the RPi, however the I/O connections pins are the same as the other modules.

Here is a typical block diagram of a module (4 Channel Analog Input Module SDAFE (mA and VDC), 15 Bit)

Every WL-MIO module has the same design:

• 12 I/O field wiring termination points
• An ARM processor
• Isolated (1 kV) CAN bus driver
• Isolated (1 kV) 5 VDC to DC Converter
• Backplane ID Logic
• Field Voltage can be either local or jumpered in from the main input field voltage

Please refer to the individual module specifications for more details

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