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2.2 Network Configuration
2
SYSTEM CONFIGURATION
(1) Using the QJ71MB91 as a master station
(a) Connecting to a slave station (1:1) with a RS-232 line
(b) Connecting to a slave station (1:1) with a RS-422/485 line
(c) Connecting to slave stations (1:1) with RS-232 and RS-422/485 lines
(d) Connecting to slave stations (1:n)
Figure 2.1 Connecting to a slave station (1:1) with a RS-232 line
Figure 2.2 Connecting to a slave station with a RS-422/485 line
Figure 2.3 Connecting to slave stations (1:1)with RS-232 and RS-422/485 lines
Figure 2.4 Connecting to slave stations (1:n)
4
2
5
3
1
6
7
(FG)
(FG)
RS-232
/485
RS-422
CH2
RDB
RDA
SDB
SG
SDA
CH1
QJ71MB91
RUN
RD
NEU.
SD
NEU.
RD
SD
CH1 CH2
ERR.
R
RS-232
QJ71MB91 (Master function)
MODBUS slave device
4
2
5
3
1
6
7
(FG)
(FG)
RS-232
/485
RS-422
CH2
RDB
RDA
SDB
SG
SDA
CH1
QJ71MB91
RUN
RD
NEU.
SD
NEU.
RD
SD
CH1
CH2
ERR.
R
RS-422/485
QJ71MB91 (Master function)
MODBUS slave device
4
2
5
3
1
6
7
(FG)
(FG)
RS-232
/485
RS-422
CH2
RDB
RDA
SDB
SG
SDA
CH1
QJ71MB91
RUN
RD
NEU.
SD
NEU.
RD
SD
CH1 CH2
ERR.
R
RS-232
R
RS-422/485
QJ71MB91 (Master function)
MODBUS slave device
MODBUS slave device
4
2
5
3
1
6
7
(FG)
(FG)
RS-232
/485
RS-422
CH2
RDB
RDA
SDB
SG
SDA
CH1
QJ71MB91
RUN
RD
NEU.
SD
NEU.
RD
SD
CH1 CH2
ERR.
R
RS-485
QJ71MB91 (Master function)
MODBUS
slave device
R
MODBUS
slave device
R
MODBUS
slave device
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