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Connect the adapter to the network, Connect to the adapter – Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual User Manual

Page 90

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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

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