7
3-3-5. Examples of HOST/RT-20 handshaking
3-3-5-1.
Example of successful handshaking
R T - 2 0
H O S T
C o m m a n d
a c c e p t a b le
R e q u e s t
a c c e p t a b le
C o m m a n d
A C K
S t a t u s
r e q u e s t
S t a t u s
a n s w e r
A u t o s t a t u s
f e e d b a c k
C h a n g e d
s t a t u s
The RT-20 may reply with an ACK instead of requested status, if the RT-20 cannot send the requested status
immediately.
3-3-5-2.
Examples of handshaking errors
R T - 2 0
H O S T
C o m m a n d
i n c o r r e c t
R e q u e s t
i n c o r r e c t
C o m m a n d
N A K
S t a t u s
r e q u e s t
N A K
