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PROFIBUS Master Module
Quick Start Guide
1.
Install the Communications Carrier on the DIN
Rail by simply clicking it into place.
Note: Connecting carriers must be installed on the
same section of 35mm x 7.5mm DIN rail.
The DIN rail must have a conductive (unpainted)
finish for proper grounding.
2.
Install the Module on the Communications Carrier.
Note:
PROFIBUS uses linear bus architecture that requires active bus termination at both ends. Devices in a
PROFIBUS network connect directly to the bus cable or indirectly via stub lines. For proper network termination,
the terminating devices must provide and maintain power. Power is provided by the device on Pin 6 and Ground
is provided on Pin 5. If power is lost to either terminating device, the network may not operate correctly. Generally,
the network master device is one of the terminating devices. The other terminating device may be a critical slave
device or a separately powered, stand-alone terminator.
PROFIBUS Master Module
Bus
Termination
Turn latch on the
module to the
unlocked position.
Align the connector
and the latch post and
press the module
down until the two
tabs on the bottom of
the module click into
place.
Turn the latch to the
locked position to
secure the module to
the carrier.
Master
PLC with
PROFIBUS Slave Module
3.
Connect the communications bus to the
connector on the front of the module.
The Master module provides a PROFIBUS
standard female DB9 subminiature connector.
PROFIBUS Connector Pin Assignments
Pin
1
Not used
2
Not used
3
RxD/TxD-P: Receive data / transmission
data positive
4
CNTR-P: Control signal for repeaters
(direction control)
5
DGND: Data ground
6
VP: Supply voltage of the terminating
resistance (+ 5V)
7
Not used
8
RxD/TxD-N: Receive data / transmission
data negative
9
Not used
4.
Power up the System, and Observe the Module
LEDs. The LEDs indicate the presence of power
and show the operating mode and status of the
module. On initial powerup with no configuration
stored, the LED display should be as follows. For
details on the Master module's LED operation,
refer to the VersaMax PROFIBUS Master User's
Manual, GFK-2740.
LED
Color
OK
Green
COM
Off
STAT
Green
Slaves
GFK-2739
Signal
State
Solid On
NA
Blinking 3 times fast at 5 Hz,
8 times at 0.5 – 1 Hz
Bus
Termination
Stub with
Slaves
3
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