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SIMATIC S7-1200

Communication

CM 1242-5

4/100

Siemens ST 70 · 2011

■

Overview

The CM 1242-5 communication module is used to connect a

SIMATIC S7-1200 to PROFIBUS as a DP slave and has the

following characteristics:

• PROFIBUS DPV1 slave in accordance with IEC 61158

• Module replacement without PG supported

• Power is supplied via the backplane bus so that no extra

cabling is required

• Support of all standard baud rates from 9.6 Kbit/s to 12 Mbit/s

• Compact industry-standard enclosure in S7-1200 design for

mounting on a standard mounting rail

• Fast commissioning thanks to easy configuration using

STEP 7 without additional programming effort

The CM 1242-5 is intended for use in factory automation. Low-

cost PROFIBUS-based automation solutions can be created on

the basis of the S7-1200 for optimal production.

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Technical specifications

Order No. 6GK7 242-5DX30-0XE0

Product type designation

Transmission rate

Transmission rate at interface 1 in

accordance with PROFIBUS

9.6 Kbit/s … 12 Mbit/s

Interfaces

Number of electrical connections

• at interface 1 in accordance with

PROFIBUS

• for power supply 0

Design of electrical connection

• at interface 1 in accordance with

PROFIBUS

9-pin D-sub socket (RS485)

• for power supply

Supply voltage, current

consumption, power loss

Type of power supply DC

Supply voltage

• 1 from backplane bus 5 V

• External -

Relative positive tolerance at

24 V DC

Relative negative tolerance at

24 V DC

Current consumed

• from backplane bus at 5 V DC,

typical

0.15 A

• from external power supply at

24 V DC

- Typical -

-Maximum

Effective power loss 0.75 W

Permitted ambient conditions

Ambient temperature

• During operation

-Minimum -

-Maximum -

• During storage -40 … +70 °C

• During transport -40 … +70 °C

•Note -

Relative humidity at 25 °C without

condensation during operation,

maximum

95%

IP degree of protection IP 20

Design, dimensions and weights

Module format S7-1200 compact module, single

width

Width 30 mm

Height

100 mm

Depth

75 mm

Net weight

0.12 kg

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 121 122

SIMATIC S7-1200 1

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