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3. PROCEDURE UP TO DATA COMMUNICATIONS DESCRIBED IN THIS GUIDEBOOK MELSEC
QnA
3.1.2
Functions of setting switches
The following describes the functions of the setting switches on the AJ71 QC24 front panel.
Mode switches
Set the mode of each Interface.
\
1 : Communlcations using dedlcated protocol,
6: Non procedure protocol
7: Bidirectlonal protocol
E: ROM/RAM/swltch test
F: Self loopback test
control procedure format 1
Transmission speclfications switches (CH1)
Set the data bit length, party blt, stop bit
length, checksum, and other data
communications speclfications.
Switch
Setting Item
Setting
Contents
SWOl
OFF
(independ-
Operation setting
ent operation)
SW02
ON (Enable)
Parity bit enable/dis-
SW03
OFF (7
bits)
Data bit settlng
able setting
SW04
ON
(Even)
Even parity/odd parity
setting
SW05
OFF
(Disable)
Checksum enable/dis-
SW06
OFF (1
bit)
Stop btt settlng
able setting
SW07
ON
(Enable)
Enable/disable write
during
RUN
SW08
OFF
(Disable)
Setting modification
enable/disable settlng
swo9
OFF
Transmission rate set-
OFF
(4800BPS)
I
ON
t - 1
-
I
OFF
I
CPURWO
O C H 2 ERR
RUNO OCHI.ERR
P R T O
0
0 0
-
NEUO
O N E U
A C K O
O A C K
NAKO
ONAK
CiNO
OCiN
p i s 0
OPE
S I 0 0
Oslo
SD WAITO
OSD.WAIT
S D O
OS0
-
RDO
O R D
RS232
CH1
0
-
0
-
CH2
RS422
RS485
SDA
RDP
SDB
RDE
NC
SG
FG
Station No. swltches
/
Set the statlon No. fcr 1
: n
system
configuration communlcations.
Settlng
IS
performed iylth 0-31,
For 1 :1 communications, thls
switch
IS
usually set to 0.
x10
x1
setting
3
communicates as statlon 0
Set switches SW13 to SW15 on the left side of the
module to OFF.
3 - 3
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