Owner manual

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE
34 Subject to technical amendments BU 0220 GB-0912
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. Either the diagnostic socket
of the frequency inverter or that of the BUS connection units can be used. 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.
Although the customer unit SK CU4-PBR does not have an RJ12 connection, it can be accessed from any other
participant (frequency inverter) on the same system bus.
Terminal/
Name
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 subscriber.
VREF 10V AG N D 0V AIN 1 + AIN 2 + AO U T 1 DIG IN 1 DIG IN 2 DIG IN 3 DIG IN 4 VO + 15V DG N D 0V
11 12 13 14 16 22 23 24 25 42 40 21
DIG IN 5
1 2 3 4
REL 2.2 REL 2.1 REL1.2 REL 1.1
CAN _H CAN _L CAN _G N D nc CAN _SHLD CAN _G N D nc CAN _24V CAN _H CAN _L CAN _G N D nc CAN _SHLD CAN _G N D nc CAN _24V
RS48 5_A RS48 5_B G N D TXD RXD
41
VO + 5V
+ 5 V
+24V
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%
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 NORDCON software and the ParameterBox SK PAR-3H
are available as diagnostic tools.
For a detailed description of the use of these ParameterBoxes,
please refer to Manual BU0040. The NORDCON software is
available free of charge under www.nord.com. Connection cables
for the SK PAR-3H are included in the scope of delivery of the
box. The necessary cables for connecting the bus module to
the PC (RJ12-SUB/D) can be ordered under the part number
278910240. Adapters for connection to a USB port are
commercially available.