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5 Installation Procedure
5.
Select the proper type of 9-pin D-sub CN5 connector and network cable.
Refer to on page 41
Refer to the PROFIBUS-DP website at www.profibus.com for more information on cables and connectors.
6.
Connect the option to the network using a 9 pin D-sub connector as shown in
Connection Diagram
Figure 7
PROFIBUS Cable
To PROFIBUS-DP
Master
To the next slave
<1> The ground wire provided in the option shipping package must be connected during installation.
PROFIBUS-DP Termination
The option does not have a termination resistor. The termination resistance must be set on the final drive in the
network using a switch on the 9-pin D-sub connector. Make sure that only the connector for the final drive in the
network has a termination resistor; communication problems may arise if any other network drive has a
termination resistor.
Use only the input side cable entry as shown in
D-sub connectors have a function for disconnecting the output side of the cable. Communication will not be
possible between devices if the connector is reversed. Most connectors have arrows indicating the input and
output sides.
Figure 8
14
for details on cable selections and cable lengths.
(Red)
1B
(Green)
1A
(Red)
2B
(Green)
2A
(Shell)
For the last node on the bus,
turn on the termination resistor switch.
Figure 7 Option Connection Diagram
9-pin D-sub Connector
Switch
O
Incoming Cable
Figure 8 PROFIBUS Cable Connection with Termination Resistors
Bus termination ON = incoming and outgoing cables not connected.
Bus termination OFF = incoming and outgoing cables connected.
PROFIBUS Cable Connector
Figure 8
when connecting both ends of the network. Most 9-pin
Bus termination
ON
O
O
OFF
Outgoing Cable
YASKAWA ELECTRIC SIEP C730600 42B 1000-Series Option SI-P3 Technical Manual
Figure
7.
Drive
CN5-A
B-line
3
FE
A-line
8
RTS
4
SI-P3
VP
6
DGND
5
(Shell)
9-pin D-sub Connector
<1>
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