FLEX I/O PROFIBUS Communications Adapter
3
Publication 1794-IN114A-EN-P - July 2008
2.
Disconnect any wiring jumpered to the adjacent terminal base.
3.
Open the module latching mechanism and remove the module from the
base unit to which the adapter will be attached.
4.
Push the flexbus connector toward the right side of the terminal base to
unplug the backplane connection.
5.
Release the locking tab (C) and remove the adapter module.
6.
Before installing the new adapter, notice the notch on the right rear of the
adapter. This notch accepts the hook on the terminal base unit. The notch
is open at the bottom. The hook and adjacent connection point keep the
terminal base and the adapter tight together, reducing the possibility of a
break in communication over the backplane.
7.
Complete the adapter mounting as follows.
a. Push down and in at the same time to lock the adapter to the DIN rail.
If the adapter does not lock in place, use a screwdriver or similar
device to move the locking tab down while pressing the adapter flush
onto the DIN rail, and release the locking tab to lock the adapter
module in place. If necessary, push up on the locking tab to lock.
b. When the adapter is locked onto the DIN rail, gently push the flexbus
connector into the adapter to complete the backplane.
8.
Reinstall the module in the adjacent terminal base unit.
Connect Wiring for your Module
1.
Connect the PROFIBUS drop cable to the 9-pin D-shell connector
according to the following pin assignments.
2.
Connect the cable shield to pin 1.
The shield is connected to earth ground.
3.
Connect the data signal pins on both ends ( pin 3 and signal -
pin 8).
4.
Insert the wired connector into the mating connector on the adapter.
5.
CV DC power to the left side of the lower connector, terminal E.
6.
Connect -V common to the left side of the upper connector, terminal D.
WARNING
If you connect or disconnect the PROFIBUS cable with power applied to this
module or any device on the network, an electrical arc can occur. This could
cause an explosion in hazardous location installations. Be sure that power
is removed or the area is nonhazardous before proceeding.
C
Flexbus connector
44555
44556
C
44557
WARNING
If you connect or disconnect wiring while the field-side power is on, an
electrical arc can occur. This could cause an explosion in hazardous
location installations. Be sure that power is removed or the area is
nonhazardous before proceeding.
PIN
RS-485 Reference
Signal
Description
1
Shield
Shield, RC to earth ground
2
RP
Not used
3
B/B’
RXD/TXD-P
Receive/transmit data - P
4
CTNR-P
Not used
5
C/C’
DGND
Data ground
6
VP
Voltage plus (+5V)
7
RP
Not used
8
A/A’
RXD/TXD-N
Receive/transmit data - N
9
CTNR-N
Not used
Metal shell
Earth ground
ATTENTION
Total power connection wire length must be less than 10 m (32.8 ft).
1
.
.
Data Ground
Shield
Pin #1
5
RCV/ Xmit Data +
9
6
.
.
DROP CABLE
PROFIBUS
ADAPTER
Pin #3
Pin #5
+5V Pin #6
Signal - Pin #8
Earth Ground
RCV/ Xmit Data -
.
*
Pins #5 and #6 can be used to supply an external Profibus terminator.
*
44558
G
E
24
V
COM
PROFIBU
S
Connector
D
F
44559