SIEMENS SIMATIC S7-1200 SIPLUS CM 1242-5 communication modules

The SIPLUS 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 overhead

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.

Note:

SIPLUS extreme products are based on SIMATIC standard products. The contents listed here were taken from the respective standard products. SIPLUS extreme specific information was added.

SIPLUS S7-1200 CM 1242-5

Article No.

6AG1 242-5DX30-2XE0

Article No. based on

6GK7 242-5DX30-0XE0

Ambient temperature range

-25 … +55 °C

Ambient conditions

Suitable for exceptional exposure to media (e.g. sulfur chlorine atmosphere).

Technical data

The technical data of the standard product applies except for the ambient conditions.

Ambient conditions

Relative humidity

100%, condensation/frost permitted. No commissioning in bedewed state.

Biologically active substances, compliance with EN 60721-3-3

Class 3B2 mold and fungal spores (excluding fauna). The supplied plug covers must remain in place over the unused interfaces during operation!

Chemically active substances, compliance with EN 60721-3-3

Class 3C4 incl. salt spray in accordance with EN60068-2-52 (degree of severity 3). The supplied plug covers must remain in place over the unused interfaces during operation!

Mechanically active substances, compliance with EN 60721-3-3

Class 3S4 incl. sand, dust. The supplied plug covers must remain in place over the unused interfaces during operation!

Air pressure (depending on the highest positive temperature range specified)

1 080 … 795 hPa (-1 000 … +2 000 m)
see ambient temperature range

795 … 658 hPa (+2 000 … +3 500 m)
derating 10 K

658 … 540 hPa (+3 500 … +5 000 m)
derating 20 K

SIPLUS CM 1242-5 communication modules
SIPLUS CM 1242-5 communication modules

Benefits

PROFIBUS-based systems can be operated effectively for lower operating and maintenance costs:

  • Low costs since an automation solution requires no fixed wiring and less hardware
  • Fast response to faults thanks to comprehensive diagnostics options
  • Optimized plant and inventory management

The CM 1242-5 also offers further benefits especially for the requirements of micro-automation solutions:

  • Uncomplicated connection of the S7-1200 to PROFIBUS without extra power supply
  • Low-cost implementation of automation solutions based on PROFIBUS
  • Fast commissioning, as no programming overhead is required

Application

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

With the CM 1242-5, low-cost, distributed automation solutions can be implemented on the basis of the S7-1200 , or in simple cases even complete plant automation systems. It can be used in all sectors of discrete automation. These include, for example:

  • Automotive
  • Pharmaceuticals
  • Semiconductors
  • Food processing industry

Design

The CM 1242-5 offers all the benefits of the S7-1200 design.

  • Rugged, compact plastic enclosure
  • Easily accessible connection and diagnostics elements, protected by front flaps
  • Removable connecting terminals
  • Simple mounting on the mounting rail of the S7-1200
  • 9-pin sub-D socket for the bus interface to PROFIBUS

The CM 1242-5 is plugged into the left-hand system bus interface of the S7-1200. Power is supplied via the system bus of the S7-1200 so that no extra cabling is required. The rugged RS485 interface is located on the underside of the module, protected by the lower front flap.

Function

The CM 1242-5 provides the communication services for integrating an S7-1200 into an automation solution as a PROFIBUS DP slave.

PROFIBUS DP slave

The CM 1242-5 works as a DPV1 slave in accordance with IEC 61158, handles data traffic completely autonomously, and thus relieves the CPU of communication tasks.

The data areas of the distributed I/Os are transferred consistently between CP and CPU.

Diagnosis

Extensive diagnostic options are available via STEP 7, including

  • Operating state of the CM
  • General diagnostics functions
  • Connection diagnostics
  • Message buffer

STEP 7 Basic V11 or higher is required for configuring the full functional scope of the CP 1242-5.

Technical specifications

Article number

6GK7242-5DX30-0XE0

Product type designation

CM 1242-5

Transmission rate

Transfer rate

  • ● at the 1st interface acc. to PROFIBUS

9.6 kbit/s … 12 Mbit/s

Interfaces

Number of interfaces acc. to Industrial Ethernet

0

Number of electrical connections

  • ● at the 1st interface acc. to PROFIBUS

1

  • ● for power supply

0

Type of electrical connection

  • ● at the 1st interface acc. to PROFIBUS

9-pin Sub-D socket (RS485)

Supply voltage, current consumption, power loss

Type of voltage of the supply voltage

DC

Supply voltage 1 from backplane bus

5 V

Consumed current

  • ● from backplane bus at DC at 5 V typical

0.15 A

Power loss [W]

0.75 W

Permitted ambient conditions

Ambient temperature

  • ● for vertical installation during operation

0 … 45 °C

  • ● for horizontally arranged busbars during operation

0 … 55 °C

  • ● during storage

-40 … +70 °C

  • ● during transport

-40 … +70 °C

Relative humidity at 25 °C without condensation during operation maximum

95 %

Protection class IP

IP20

Design, dimensions and weight

Module format

Compact module S7-1200 single width

Width

30 mm

Height

100 mm

Depth

75 mm

Net weight

0.115 kg

Mounting type

  • ● 35 mm DIN rail mounting

Yes

  • ● S7-300 rail mounting

No

  • ● wall mounting

Yes

Product properties, functions, components general

Number of units

  • ● per CPU maximum

3

Performance data PROFIBUS DP

Service as DP slave

  • ● DPV0

Yes

  • ● DPV1

Yes

Amount of data

  • ● of the address area of the inputs as DP slave total

240 byte

  • ● of the address area of the outputs as DP slave total

240 byte

Performance data telecontrol

Protocol is supported

  • ● TCP/IP

No