4.
SETTINGS
AND
PROCEDURES
BEFORE
OPERATION
MELSEGA
(4)
Write during
RUN
-
Set whether a processing requested by the external device is executed
or not executed by the PC
CPU
in
the
RUN
state when the computer link
operates with the dedicated protocol.
Section
3.3.1
gives the functions available with this setting.
(5)
Terminal resistance at send and receive
When using the
RS-422
cable, set the terminal resistance to "Present" at
the stations connected to
the
both sides
of
the station which is linked
with the
RS-422
cable.
If this setting is not correct, normal computer link operations cannot be
done.
The following chart shows examples
of
settings. Shaded boxes indicate
the stations where terminal resistance needs to be set, and white boxes
indicate the stations where terminal resistance need not be set. (Appen-
dix
6
gives the settings
to
be done on the computers.)
10
P&PU
Com uter
Ratio
l:n
m:n
I
System Configurrtlons
Computer
w22
--
Computer
,,e&&&
R5422
p&mp"ter
3s-
- -
I
r----
--w
C24
C24
C24
C24
4-8
Setting
ot
W71
C24
Whore
Torminai
Needs
to
be
Set
R.rlst.nce
SW23
ON
ON
ON
SW24
~~
ON
ON
ON
ON
OFF
or
OFF
ON
(Set either to
ON)
I
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