Cm 1243-5 Profibus Master - Siemens SIMATIC S7-1200 Manual

Technical specifications
A.8 Communication interfaces
PROFIBUS interface
Table A- 55
A.8.1.2

CM 1243-5 PROFIBUS master

Table A- 56 Technical specifications of the CM 1243-5
Technical specifications
Order number
Interfaces
Connection to PROFIBUS
Maximum current consumption on the PROFIBUS interface
when network components are connected (for example
optical network components)
Permitted ambient conditions
Ambient temperature
during storage

during transportation

during operation with a vertical installation (DIN rail

horizontal)
during operation with a horizontal installation (DIN rail

vertical)
Relative humidity at 25 °C during operation, without
condensation, maximum
Degree of protection
Power supply, current consumption and power loss
Type of power supply
Power supply / external
minimum

maximum

Current consumption (typical)
from 24 V DC

from the S7-1200 backplane bus

272
Pinout of the D-sub socket
Pin Description
1 - not used -
2 - not used -
3 RxD/TxD-P: Data line B
4 RTS
5 M5V2: Data reference potential
(ground DGND)
Pin
6 P5V2: +5V power supply
7 - not used -
8 RxD/TxD-N: Data line A
9 - not used -
Housing Ground connector
6GK7 243-5DX30-0XE0
9-pin D-sub female connector
15 mA at 5 V (only for bus termination) *
-40 °C to 70 °C

-40 °C to 70 °C

0 °C to 55 °C

0 °C to 45 °C

95 %
IP20
DC
24 V
19.2 V

28.8 V

100 mA

0 mA

Description
)
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Manual, 11/2011, A5E02486774-04