Acnodes PCH 7591 - Manual (Page 21)

PCH 7591
15 inch Atom Fanless Panel PC
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8 . C O M 2 2 (2 . 0 M M 2 X 5 ) : it p r o v id e s s e le c t a b le R S 4 2 2 / 4 8 5 s e r ia l s ig n a l o u t p u t .
S ig n a l N a m e P in # P in # S ig n a l N a m e
A 1 2 Te r m in a l
R e s is t a n c e
B 3 4 Te r m in a l
R e s is t a n c e
Z 5 6 N C
Y 7 8 N C
G r o u n d 9 1 0 N C
9 . U S B 4 (2 . 0 M M 2 X 5 ) F r o n t U S B c o n n e c t o r : it p r o v id e s t w o U S B p o rt s v ia a d e d ic a t e d U S B
a d a p t e r c a b le .
S ig n a l N a m e P in # P in # S ig n a l N a m e
+ 5 V 1 2 + 5 V
U S B _ P 6 _ D N 3 4 U S B _ P 7 _ D N
U S B _ P 6 _ D P 5 6 U S B _ P 7 _ D P
G r o u n d 7 8 G ro u n d
N C 9 1 0 G ro u n d
N o t e :
B e f o r e c o n n e c t io n , m a k e s u re t h at p in o u t o f t h e U S B a d a p t e r is in a c c o rd a n c e w it h t h a t o f t h e s a i d
t a b le s . A n y in c o n f o r m it y m a y c a u s e s y s t e m d o w n a n d e v e n h a rd w a re d am a g e s .
1 0 . J C O M (2 . 0 M M 2 X 6 ) C O M 1 / 2 s e t u p j u m p e r: p i n 1 ~ 6 a r e u s e d t o s e le c t s ig n a l o u t o f p in 9 o f
C O M 1 p o r t ; p in 7 ~ 1 2 a r e u s e d t o s e le c t o u t p u t t y p e f o r C O M 2 p o r t (R S 2 3 2 o r R S 42 2 /4 8 5 ).
J C O M F u n c t i o n
C L O S E 1 - 2 C O M 1 P i n 9 = R I (d e f a u l t )
C L O S E 3 - 4 C O M 1 P in 9 = + 5 V
C L O S E 5 - 6 C O M 1 P in 9 = + 1 2 V
C L O S E 7 - 9
C L O S E 8 - 1 0
C O M 2 F O R R S 2 3 2 F R O M C O M 2
(d e f a u l t)
C L O S E 9 - 11
C L O S E 1 0 - 1 2
C O M 2 F O R R S 4 8 5 / R S 4 2 2 F R O M
C O M 2 2
N o t e :
1 . A s d e t e r m in e d b y i ts h a r d w a r e d e s ig n , th e b o a r d f e a t u r e s f u ll- d u p le x R S 4 8 5 c o m m u n ic a t io n . L ik e
R S 4 2 2 , a f o u r - w ir e c o n n e c t io n i s n e c e s s a r y.
2 . S in c e C O M 2 a nd C O M 2 2 u s e t h e s a m e a d d r e s s , th e y c a n n o t w o r k a t t h e s a m e t im e .