NORD Drivesystems BU0290 - Manual (Page 23)

3 Displays and diagnosis
BU 0290 GB-4312 Subject to technical amendments 23
3.2 RJ12 Diagnostic socket
All participants which are coupled via a common system bus (field bus module / frequency inverter (up to 4
devices)) can be read out and edited/parameterised via an RJ12 diagnostic socket. This can be either the
diagnostic socket of the frequency inverter or that of the BUS connection units. This provides users with a
convenient facility to perform diagnosis and parameterisation from a central point, without having to access the
particular frequency inverter at its location.
Terminal/
Designation Function
Data Description /
wiring suggestion Parameter
Diagnostic access / RJ12, RS485/RS232
1 RS485 A
Data cable RS485
Baud rate
9600…38400Baud
Termination
resistor R=120

to be set by customer at
the final participant.
V
RE
F
1
0
V
A
G
N
D
0
V
A
IN
1
+
A
IN
2
+
A
O
U
T
1
D
IG
I
N
1
D
IG
I
N
2
D
IG
I
N
3
D
IG
I
N
4
V
O
+
1
5
V
D
G
N
D
0
V
11 12 13 14 16 22 23 24 25 42 40 21
D
IG
I
N
5
1 2 3 4
RE
L
2
.2
RE
L
2
.1
RE
L
1
.2
RE
L
1
.1
C
A
N
_
H
C
A
N
_
L
C
A
N
_
G
N
D
nc C
A
N
_
S
H
L
D
C
A
N
_
G
N
D
nc C
A
N
_
2
4
V
C
A
N
_
H
C
A
N
_
L
C
A
N
_
G
N
D
nc C
A
N
_
S
H
L
D
C
A
N
_
G
N
D
nc C
A
N
_
2
4
V
R
S
4
8
5
_
A
R
S
4
8
5
_
B
G
N
D
T
X
D
R
X
D
41
V
O
+
5
V
+
5
V
+
2
4
V
RJ12: Pin No. 1 … 6
1: RS485_A
2: RS485_B
3: GND
4: RS232_TxD
5: RS232_RxD
6: +24V
P502
...P513
2 RS485 B
3 GND Reference potential
for BUS signals
0V digital
4 232 TXD
Data cable RS232
Baud rate
9600…38400Baud
5 232 RXD
6 +24V 24V voltage supply
from FI
24V

20%
Table 9 RJ12 socket connections
The bus speed of the diagnostic interface is 38400 baud. Communication is carried out according to the USS
protocol.
NOTE
Simultaneous use of several diagnostic sockets with several diagnostic tools may lead to
errors during communication. Therefore, only one diagnostic socket within a system bus
network should be used.
The ParameterBox SK PAR-3H is available as a diagnostic tool.
The necessary connecting cables are included in the scope of
delivery of the ParameterBox. For a detailed description of use,
please refer to Manual BU0040.
ParameterBox SK PAR-3H