Specifications
Appendix 1 Instruction of Standard Expansion Card SC-EXT1-IO 
177
 Appendix2SC‐EXT1‐IOExpansioncardandpanelinstallationdiagram
III.  WiringTerminalDescription
1、Terminalarrangementdiagram
TA4 TC4 485+  485-
HDO HDI
PW
FM2
2、TerminalFunctionDescription
Type 
Terminal 
symbol 
Terminal name  Function description 
Power supply  PW 
External inpu
t
p
owe
r
External power supply, max input is 30V,
the user could connect the power supply 
directly  ( between COM ), could also 
supply +24V power supply through this 
machine, and choose through JP6 JUM
P
WIRE on expansion cards. 










