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4. COMMUNICATIONS USING A DEDICATED
PROTOCOL
MELSEC
QnA
4.2
AJ71 QC24 Serial Communications Module Settings
Switch
Setting
0
0
0
0
0
0
0
0
-
sw
01
02
03
04
05
06
07
08
The following shows the setting of each AJ71 QC24 switch
Mode switches
i
CHI : Set
to
1
CH2: Set to 1
Transmlssion specifications switches (CHI)
/
SWOl
s w 0 2
SW03
SW04
SW05
SW06
SW07
SW08
s w o 9
S W I
0
S W l l
s w 1 2
Setting Item
Operation setting
Data bit setting
Parity bit enable/dis-
able setting
Even parity/odd parity
settlng
Stop bit setting
Checksum enable/dis-
able setting
Enable/disable
wrlte
during
RUN
Setting modification
enable/disable setting
Transmlssion rate set-
tlng
Setting
Contents
OFF (Independ-
ent operation)
OFF (7 bits)
ON
(Enable)
ON
(Even)
1
OFF
(1
bltj
OFF (Dlsable)
1
ON
(Enable)
OFF (Disable)
OFF (4800BPS)
ON
OFF
I
Set switches SW13 to SWI 5 on the left side of the mod-
ule to OFF.
R U N 0
O C H l ERR
CPURAVO
O C H 2
ERR
PRTO 0
0
0
.
NEUO ONEU
ACKO
0
ACK
NAKO
ONAK
CNO
o c m
p i s o
OPE
S I 0 0
OSIO
0
0
P R O 0
O P R O
SD W A I T 0
0
SD
WAIT
.
R D O
O R D
S D O
OS0
O
0
1
I
3
-
IoI/
: H Z
S422
5485
SDA
RDA
SDB
RDB
NC
SG
FG
Station No. switches
/
x1
0
x1
I
I
I
Station No. "00" set.
4 - 1 1
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