Part number
6GK7243-5DX30-0XE0
Model no
CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication.
$651.02 In stock · 16 Dispatch Planned dispatch date. We aim to ship within 1 business day. Depending on warehouse workload it can take 2–3 business days. · From Türkiye
Manufacturer phase-out

Siemens has announced the end of 6GK7243-5DX30-0XE0

Once production ends, supply depends on remaining stock.

No replacement announced yet. Tell us the application and we will propose an alternative.

SIMATIC S7-1200

Siemens 6GK7243-5DX30-0XE0 SIMATIC S7-1200 CM 1243-5 PROFIBUS DP Master Module

SIMATIC S7-1200 CM 1243-5, PROFIBUS DP master, up to 32 devices, RS485.

Rated current
0.1 A
Communication
PROFIBUS DP master, RS485, DPV1, PG/OP, S7 communication
EAN
4019169211215
Description

About the CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication.

The Siemens 6GK7243-5DX30-0XE0 CM 1243-5 is a SIMATIC S7-1200 communication module that connects the CPU to PROFIBUS as a DP master, supporting up to 32 DP devices and DPV1 service. It operates from a 24 V DC supply, draws 0.1 A typical, and dissipates 2.4 W.

Certifications & Standards

  • CE
  • UKCA
  • KC
  • RCM
  • RoHS
  • EAC
  • ATEX
  • IECEx
  • CCC
  • FM registration

Selection Notes

The 32-device DP master capacity and 512-byte total input/output address range size this module for a full-scale PROFIBUS segment feeding an S7-1200, rather than a handful of drives - for a single VFD or simple slave device, PROFIBUS wiring overhead may not be worth it versus PROFINET. Up to 3 CM 1243-5 modules can be added per CPU, useful when migrating an existing PROFIBUS plant floor onto an S7-1200 without re-cabling every DP slave to Ethernet. The RS485 Sub-D interface and DPV1 support match standard third-party PROFIBUS DP slave devices without protocol conversion.

Applications

Used to integrate an S7-1200 CPU into an existing PROFIBUS DP network as master, connecting legacy drives, remote I/O, or third-party DP slave devices during brownfield migrations.

Specification

Full specification

83 values · Last verified 01 Nov 2026

General 2

product type designation CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication.
product brand name SIMATIC NET

Transfer rate 1

transfer rate: at the 1st interface / according to PROFIBUS 9.6 kbit/s ... 12 Mbit/s

Interfaces 5

number of interfaces / according to Industrial Ethernet 0
number of electrical connections: at the 1st interface / according to PROFIBUS 1
number of electrical connections: for power supply 1
type of electrical connection: at the 1st interface / according to PROFIBUS 9-pin Sub-D socket (RS485)
type of electrical connection: for power supply 3-pole terminal block
Show all 83 specifications ↓ Show less ↑75 more values in Identification, Supply voltage, current consumption, power loss, Ambient conditions, Design, dimensions and weights, Product features, product functions, product components / general, Performance data / PROFIBUS DP, Performance data / S7 communication, Performance data / multi-protocol mode, Performance data / telecontrol, Product functions / management, configuration, engineering, Standards, specifications, approvals, Standards, specifications, approvals / hazardous environments / header, Standards, specifications, approvals / marine classification / header, Europe Ltd. (ABS), (LRS), Standards, specifications, approvals / Environmental Product Declaration, Logistics.

Identification 10

Part number 6GK7243-5DX30-0XE0
Type designation CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication.
Brand Siemens
Condition New, factory sealed
Source Siemens and its authorised distributors
Warranty Manufacturer warranty
Lifecycle status Phase-out announced by the manufacturer
EAN 4019169211215
ETIM class EC001423
eCl@ss 27242208

Supply voltage, current consumption, power loss 7

type of voltage / of the supply voltage DC
supply voltage / external 24 V
supply voltage / external / at DC / rated value 24 V
relative positive tolerance / at DC / at 24 V 20 %
relative negative tolerance / at DC / at 24 V 20 %
consumed current: from external supply voltage / at DC / at 24 V / typical 0.1 A
power loss [W] 2.4 W

Ambient conditions 6

ambient temperature: for vertical installation / during operation 0 ... 45 °C
ambient temperature: for horizontally arranged busbars / during operation 0 ... 55 °C
ambient temperature: during storage -40 ... +70 °C
ambient temperature: during transport -40 ... +70 °C
relative humidity: at 25 °C / without condensation / during operation / maximum 95 %
protection class IP IP20

Design, dimensions and weights 7

module format Compact module S7-1200 single width
width 30 mm
height 100 mm
depth 75 mm
fastening method: 35 mm DIN-rail mounting Yes
fastening method: S7-300 rail mounting No
fastening method: wall mounting Yes

Product features, product functions, product components / general 1

number of units: per CPU / maximum 3

Performance data / PROFIBUS DP 9

service / as DP master: DPV1 Yes
number of DP devices: on DP master / operable 32
data volume: of the address range of the inputs / as DP master / total 512 byte
data volume: of the address range of the outputs / as DP master / total 512 byte
data volume: of the address range of the inputs / per DP device 244 byte
data volume: of the address range of the outputs / per DP device 244 byte
data volume: of the address range of the diagnostic data / per DP device 240 byte
service / as DP device: DPV0 No
service / as DP device: DPV1 No

Performance data / S7 communication 2

number of possible connections / for S7 communication: maximum 8; max. 4 connections to other S7 stations
number of possible connections / for S7 communication: with PG connections / maximum 1

Performance data / multi-protocol mode 2

number of active connections / with multi-protocol mode: without DP / maximum 8
number of active connections / with multi-protocol mode: with DP / maximum 8

Performance data / telecontrol 1

protocol / is supported: TCP/IP No

Product functions / management, configuration, engineering 2

configuration software: required STEP 7 Basic/Professional
product function / is supported / identification link Yes; acc. to IEC 61406-1:2022

Standards, specifications, approvals 6

certificate of suitability / CE marking Yes
certificate of suitability / UKCA marking Yes
certificate of suitability / KC approval Yes
certificate of suitability / Regulatory Compliance Mark (RCM) Yes
certificate of suitability / RoHS conformity Yes
certificate of suitability / EAC approval Yes

Standards, specifications, approvals / hazardous environments / header 4

certificate of suitability / ATEX Yes
certificate of suitability / IECEx Yes
certificate of suitability / CCC / for hazardous zone according to GB standard Yes
certificate of suitability / FM registration Yes

Standards, specifications, approvals / marine classification / header 1

Marine classification association / American Bureau of Shipping Yes

Europe Ltd. (ABS) 3

Marine classification association / French marine classification society (BV) Yes
Marine classification association / Det Norske Veritas (DNV) Yes
Marine classification association / Lloyds Register of Shipping Yes

(LRS) 2

Marine classification association / Nippon Kaiji Kyokai (NK) Yes
Marine classification association / Royal Institution of Naval Yes

Standards, specifications, approvals / Environmental Product Declaration 5

Environmental Product Declaration Yes
global warming potential [CO2 eq]: total 89.58 kg
global warming potential [CO2 eq]: during manufacturing 14.29 kg
global warming potential [CO2 eq]: during operation 75.11 kg
global warming potential [CO2 eq]: after end of life 0.18 kg

Logistics 7

Net weight 0.193 kg
Package dimensions 120 × 80 × 125 mm
Country of origin DE
Shipping weight 0.693 kg
Ships from Türkiye
Dispatch 11 Nov
Stock In stock

Source: manufacturer data · Last verified: 01 Nov 2026

Documents

Documents for 6GK7243-5DX30-0XE0

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Certifications

Certifications and standards

  • CE
  • RoHS
  • ATEX
  • / CE marking
  • / UKCA marking
  • / KC approval
  • / Regulatory Compliance Mark (RCM)
  • / RoHS conformity
  • / EAC approval
  • / ATEX
  • / IECEx
  • / CCC / for hazardous zone according to GB standard
  • / FM registration
Quick answers

Questions about the CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication.

What is the rated current of CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication.?

The rated current of CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication. is 0.1 A.

What is the HS code of CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication. for customs?

The tariff (HS) code on file for CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication. is 85176200.

What is the EAN of CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication.?

The EAN (GTIN) of CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication. is 4019169211215.

Where does CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication. ship from, and how fast?

CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication. ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.

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Series

Siemens SIMATIC S7-1200

Brand
Siemens
Series
SIMATIC S7-1200
$651.02 In stock · 11 Nov
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CM 1243-5 communications module CM 1243-5 for connection of SIMATIC S7-1200 to PROFIBUS as DP Master module; PG/OP communication; S7 communication.

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Siemens · 6GK7243-5DX30-0XE0

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Condition
New and unused, in the manufacturer's factory-sealed packaging.
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Siemens and its authorised distributors.
Warranty
The manufacturer's warranty applies.
If a part is not genuine
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