Profibus Cb155 - Siemens COMBIMASTER Reference Manual

COMBIMASTER & MICROMASTER Integrated
REFERENCE MANUAL
RS232 Interface
The Clear text Display is fitted with an RS232
interface to allow the drive to be connected to a
PC.
1 2 3 4 5
Figure 10: Pin Layout of the RS232 Edge
Connector
Terminal
1
2
3
4
5
Table 2: Terminal functions of the RS232
connector
Table 3 gives the ordering information for the
OPM2 Clear Text Display Module.
The RS232 interface requires an external power
supply to operate. The specification of the power
supply interface is as follows:
• Voltage tolerance 6V ! 0.5V
• Max Supply Current when connected to
drive 50mA, when not connected to drive
250mA
• Connecting Plug
• - Outside diameter 3.5mm
• - Inside diameter
Designation Order No.
OPM2 Clear Text 6SE 3290-0XX87-8BF0
Display Module
Connecting cable OPM 6SE 9996-0XA31
3m
Table 3: Ordering Information
Siemens plc. 1999
© | G85139-H1731-U300-D2
+6V
0V
Function, information
NC (not connected)
External TxD
External RxD
External RTS
Isolated 0V
1.35mm

7.2 PROFIBUS CB155

This option allows the COMBIMASTER to be
controlled via a PROFIBUS-DP serial bus
(SINEC L2-DP).
PROFIBUS-DP is a cost-effective high speed
serial communication system optimised for the
actuator/sensor area where very short system
reaction times are critical. It operates as a
decentralised I/O system whereby the
traditional wiring to the sensors and actuators
is replaced by an RS485 serial bus system
linking the stations together.
The suitability of the system for such
applications has been recently enhanced by
the extension of the bus speed up to 12MBd.
The protocol is defined as DIN19245 and also
as EN50170 guaranteeing open, multi-vendor
communications between PROFIBUS-DP
stations.
Up to 125 stations can be networked together
using this single bus system and a very flexible
data structure allows the system to be
optimised to exactly match the requirements of
each device.
PROFIBUS-DP lies at the heart of the new
generation of SIMATIC S7 automation systems
offered by Siemens. Using this single bus
system, all engineering, visualisation and PLC
control operations can be integrated. To
configure a SIMATIC based automation
system, all that is required is the associated
STEP7 configuration tool running on a PC. Bus
configuration is performed by using a drag and
drop technique in a graphically displayed
PROFIBUS-DP network.
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