3.1. CONNECTION TO RS485/RS422 BUS
RS485/RS422 interface in ADA-4010 converter is available on screw terminal block described as:
Tx+, Tx-, Rx+, Rx-, GND.
The way of connection the converter to RS485(4W) / RS422 bus, is shown below.
3.1.1. CONNECTION TO RS422 BUS
The converter has to be setted to operation in RS422 bus mode.
Fig. 5. Example connection of ADA-4010 to RS422 bus
3.1.2. CONNECTION TO RS485(4W) BUS
The converter has to be setted to operation in RS485 bus mode.
Fig. 6. ADA-4010 connection to RS485(4W) 4-wires bus and galvanic separation of SLAVE device
6
ADA-4010
(5) GND
(2) Rx
(3) Tx
RS232 DB-9M
connector
PC
GND
RS422
connector
Tx+
Tx-
Rx+
Rx-
Device with
RS422 interface
DB-9F
socket
(5)
(2)
(3)
GND
RS485 / RS422
connector
Tx+ / A
Tx- / B
Rx+
Rx-
RS232
connector
ADA-4010
.
Tx
Rx
.
GND
(5) GND
GND
(2) Rx
(3) Tx
RS232
connector
DB-9F/DCE
Connector
RS485/RS422
RS485(4W) bus
RS232
connector
DB-9M/DTE
PC or
MASTER device
ADA-I1040
GND (5)
Tx (2)
Rx (3)
Rt
Rt
Rx+
Rx-
Tx+/ A
Tx-/ B
RS232
C
o
n
n
ec
to
r
R
S
23
2
SLAVE-2
C
o
n
n
ec
to
r
R
S
23
2
SLAVE-3
C
o
n
n
ec
to
r
R
S
23
2
T
x+
/ A
T
x-
/ B
R
x+
R
x-
A
D
A
-4
01
0
T
x+
/ A
T
x-
/ B
R
x+
R
x-
R
t
R
t
T
x+
/ A
T
x-
/ B
R
x+
R
x-
C
o
n
n
ec
to
r
R
S
48
5 /
R
S
42
2
C
o
n
n
ec
to
r
R
S
48
5 /
R
S
42
2
C
o
n
n
ec
to
r
R
S
48
5 /
R
S
42
2
C
o
n
n
ec
to
r
R
S
23
2
C
o
n
n
ec
to
r
R
S
23
2
C
o
n
n
ec
to
r
R
S
23
2
A
D
A
-4
01
0
A
D
A
-4
01
0
SLAVE-1
RS232
RS232
G
N
D
.
.
T
x
R
x
G
N
D
.
.
T
x
R
x
G
N
D
.
.
T
x
R
x
G
N
D
.
.
T
x
R
x
G
N
D
.
.
T
x
R
x
G
N
D
.
.
T
x
R
x
Summary of Contents for ADA-4010
Page 11: ...11 ADA 4010...
