Block Diagram - Protech Systems SI-W509 User Manual

5 channels digital input and 6 channels relay output remote i/o module
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2.5 Block Diagram

9~50V
DC / DC
GND
Converter
Data
RS-485
Isolation
SI-W509 SERIES USER MANUAL
+5V
EEPROM
+5V
MCU
Chapter 2 Getting Started
+5V
+5V
SRL1_COM
SRL0_COM
SRL1_NO
SRL0_NO
PRL3_COM
PRL0_COM
PRL3_NO
PRL0_NO
DI_COM
DI_4
DI_0
Page: 2-9

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