
Installing the Module
2-7
SIMATIC 505 PROFIBUS-FMS CP User Manual
2.5 Connecting the FMS CP Module to the Network
The
PROFIBUS-FMS port is the interface between the FMS CP module and
the PROFIBUS network. T
o connect the FMS CP module to the network,
use a standard 9-pin RS-485 cable that conforms to the pinouts shown in
Figure 2-7.
Figure 2-7 shows the pinouts for the PROFIBUS-FMS port on the FMS CP
.
NOTE: Pins 2 and 7 are “No Connect.” For some PROFIBUS products, these
pins are used to provide 24 VDC for powering a programming or
configuration tool. Such tools are not powered by the FMS CP module. It is
acceptable for an externally-powered PROFIBUS programming or
configuration tool to drive pins 2 and 7 to 24 VDC.
*For
Pin 3: T
erminal B on Siemens connector
.
*For Pin 8: Terminal A on Siemens connector
.
BIAS SUPPL
Y GND (5)
TX/RX+ (3)
TX/RX– (8)
6
1
9
5
Pin Signal
1
CHASSIS GND or NC
2
No Connect
3* TX/RX+
4RTS
5
BIAS SUPPL
Y GND
6
BIAS SUPPL
Y +5V
7
No Connect
8* TX/RX–
9
BIAS SUPPL
Y GND
(D-shell)
CHASSIS GND
Female 9-pin D-shell connector
Figure 2-7 PROFIBUS-FMS
Port Pinouts
!
CAUTION
Pin 5 (BIAS SUPPLY +5V) and Pin 6 (BIAS SUPPLY GND) on the PROFIBUS-FMS
connector are designed to support the PROFIBUS-FMS network only
. These
pins have a limited output power capability of approximately 0.45 W
, which
greatly exceeds the typical PROFIBUS-FMS load; nonetheless, it is possible to
overload these pins, causing internal component damage.
If the pins are overloaded, the PROFIBUS-FMS port can be rendered
non-functional, requiring the unit to be returned to the factory for repair
.
Do not overload the pins on the PROFIBUS-FMS connector.
Connect
the PROFIBUS cable connector to the PROFIBUS port on the
FMS CP module. See Section 3.3 for information on connecting PROFIBUS
cables and connectors. Standard cable connectors are available from
Siemens. See Section 3.1 for ordering information of PROFIBUS connectors.
PROFIBUS-FMS Port
Pinout
Connecting to the
Network
Komentáře k této Příručce