Product Overview

CP 1243-8 IRC Communication Processor for SIMATIC S7-1200

The Siemens 6GK7243-8RX30-0XE0 (CP 1243-8 IRC) is an advanced industrial communication processor designed for SIMATIC S7-1200 PLC systems. It enables reliable telecontrol and remote communication between distributed automation stations and central control systems.

This module is mainly used in SCADA and telemetry applications, allowing PLCs to communicate with control centers via Industrial Ethernet and telecontrol protocols such as DNP3, IEC 60870-5, and SINAUT ST7. It supports secure data transfer over WAN networks and integrates seamlessly with Siemens automation platforms.

The CP 1243-8 IRC is ideal for infrastructure projects including water supply systems, energy distribution, pipeline monitoring, and remote pumping stations, where reliable remote data acquisition is required.

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Key Features

• Designed for SIMATIC S7-1200 PLC communication

• Supports TeleControl Professional systems

• Protocol support:

  • DNP3

  • IEC 60870-5

  • SINAUT ST7

• Industrial Ethernet (RJ45) interface

• Expandable via TS modules (RS-232, GSM, modem, ISDN)

• Built-in VPN security and firewall

• Remote diagnostics and firmware update capability

• Data buffering when communication is interrupted

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Technical Specifications

Parameter	Specification
Product Type	Communication Processor
Model	CP 1243-8 IRC
Order Number	6GK7243-8RX30-0XE0
Compatible PLC	SIMATIC S7-1200
Ethernet Interface	1 × Industrial Ethernet (RJ45)
Data Rate	10/100 Mbps
Telecontrol Protocols	DNP3, IEC 60870-5, SINAUT ST7
VPN Support	Yes (IPsec, SINEMA RC)
Supply Voltage	24 V DC
Mounting	35 mm DIN Rail
Protection Class	IP20
Operating Temperature	−20°C to +60°C
Net Weight	~0.12 kg

S7-1200 PLC CPU Model Name,	Description,	Siemens Part Number        (Order Code)

CPU 1211C  DC/DC/DC

Entry-level compact PLC with integrated I/O

6ES7211-1AE40-0XB0

CPU 1211C AC/DC/Relay

AC supply, relay outputs variant

6ES7211-1BE40-0XB0

CPU 1211C DC/DC/Relay

DC power, relay outputs

6ES7211-1HE40-0XB0

CPU 1212C DC/DC/DC

Standard performance compact PLC

6ES7212-1AE40-0XB0

CPU 1212C AC/DC/Relay

AC version with relay outputs

6ES7212-1BE40-0XB0

CPU 1212C DC/DC/Relay

DC power with relay outputs

6ES7212-1HE40-0XB0

CPU 1214C DC/DC/DC

Mid-range compact CPU

6ES7214-1AG40-0XB0

CPU 1214C AC/DC/Relay

Mid-range CPU with AC/relay outputs

6ES7214-1BG40-0XB0

CPU 1214C DC/DC/Relay

Mid-range DC with relay outputs

6ES7214-1HG40-0XB0

CPU 1215C DC/DC/DC

Higher-performance CPU

6ES7215-1AG40-0XB0

CPU 1215C AC/DC/Relay

Higher performance with AC/relay

6ES7215-1BG40-0XB0

CPU 1215C DC/DC/Relay

Higher performance DC with relay

6ES7215-1HG40-0XB0

CPU 1217C DC/DC/DC

Top performance compact CPU

6ES7217-1AG40-0XB0