Worldcast Systems RELIO - Appendix A: Pinout Connections; 64 Digital Opto Isolated Inputs; Digital Inputs - Using the SCSI Connectors

Relio 4.2.x User Manual – 07/2015
Page 49
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APPENDIX A: PINOUT CONNECTIONS
! Please refer to the ScriptEasy manual for more information on I/O management
 All Input/Output connectors are high density SCSI format, with locking tabs
A.1. 64 Digital opto isolated inputs
The Relio has two integrated digital input connectors; each one providing 32 digital inputs
Digital inputs - using the SCSI connectors
Schematic diagram
The input is OFF by default.
It switches ON if an external power supply between 5 and 25VDC is applied between the 2 digital inputs (either
polarity – the opto-isolators are bidirectional).
SCSI Pinout – Digital Inputs
Digital
Input A
Digital
input B
V