Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual - Manual (Page 90)

3–4 Connect the Adapter to the PROFIBUS DP Network
Publication 1794ĆUM057B-EN-P - November 2001
For line A or B connections, use bus segments with t-junctions and
termination blocks to form the PROFIBUS media (trunk cable). Use
termination blocks to terminate the line at each end of the trunk
cable. Use drop cables to connect devices to the network.
The maximum number of stations on the same network is 32.
Other DP
Adapter/Slave
Other DP
Adapter/Slave
PROFIBUS DP
Master/Scanner
Controller
= T-junction
= Termination Block
= Bus Segment
= Drop Cable
PROFIBUS Media
(trunk cable)
Personal Computer
with Configuration
Software
1794ĆAPB Adapter Slave
Flex I/O System
Connect to the Adapter
Connect your drop cable (using either line A or B) to the adapter as
shown below:
1
.
.
+ 5V
Data Ground
Signal +
Shield
Pin #1
5
RCV/ Xmit Data +
9
6
.
.
DROP CABLE
1M Ω
PROFIBUS ADAPTER
Pin #3
Pin #5
Pin #6
Signal – Pin #8
Earth Ground
0.01 µ F
500V dc
RCV/ Xmit Data –
•
1. Connect the cable shield to Pin #1. The shield is connected to the
FLEX I/O chassis ground through an RC circuit as shown above.
2. Connect the data signal pins on both ends (Signal + Pin #3 and
Signal – Pin#8).
Connect the Adapter to the
Network