Siemens 6GK7243-1GX00-0XE0 Communications Processor

Siemens 6GK7243-1GX00-0XE0 Communications Processor

This Siemens CP 243-1 IT Communications Processor is new from surplus stock. This unit ships in the manufacturer's box.

Part Number: 6GK7243-1GX00-0XE0

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Stock # 74795-2
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Siemens CP 243-1 Communications Processor

  • High Speed Data Communication via Industrial Ethernet Based on Standard TCP/IP
  • Simple Network Administration
  • File System for Permanent Storage of Web and Configuration Files
  • Configuration of Up to 32 FTP Client Operations


The Siemens CP 243-1 Communications Processor is intended for operation in an S7-200 automation system. It allows the connection of an S7-200 system to Industrial Ethernet (IE). The use of the CP 243-1 means that communication via Ethernet is also possible at the lower performance end of the S7 product family.

As a result, an S7-200 can be configured, programmed and diagnosed even at a distance using STEP 7 Micro/WIN 32 via Ethernet. Using a CP 243-1 also means that an S7-200 can communicate with another S7-200, an S7-300 or S7-400 controller via Ethernet. Communication with an OPC server is also possible.

The IT functions of the CP 243-1 form the basis for monitoring and, if necessary, also manipulating automation systems with a Web browser from a networked PC. In addition, diagnostics messages can also be e-mailed from a system. Using the IT functions, it is very easy to exchange entire files with other computer and controller systems.

Product Family: CP2431, CP 2431, CP243 1

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Module formatS7-200 Expansion Module
Dimensions (W x H x D)71.2 x 80 x 62 mm
WeightApprox. 150 g
Transmission rate10 Mbps and 100 Mbps
Flash memory size8 Mbytes as ROM for firmware of the CP 243-1 and 8 Mbytes as ROM for the file system
SDRAM memory size16 Mbytes
Guaranteed life of flash memory for the file system100,000 million write or delete operations
Interfaces Connection to Industrial Ethernet (10/100 Mbps)8-pin RJ-45 jack
Input voltage+24 V DC (-15%/+20%)
Current consumption
From S7 bus55 mA
From external 24 V DC60 mA
Power dissipation1.5 W
Max. number of connectionsMax. of 8 S7 connections (XPUT/XGET or READ/WRITE) + 1 connection to STEP 7 Micro/WIN 32
Max. Max. number of IT connectionsOne connection each for the FTP server, the FTP client and the e-mail client plus 4 HTTP connections
Permissible ambient conditions
Operating temperature0 °C to +55 °C for horizontal installation; 0 °C to +45 °C for vertical installation
Transport/storage temperature-40 °C to +70 °C
Max. relative humidity95% at +25 °C
Operating altitudeUp to 2000 m above sea level. At higher altitudes, cooling may be reduced which then requires a reduction of the maximum operating temperature
Type of protectionIP20
Ethernet standardIEEE 802.3
Standards / approvalsCE mark
UL 508 or cULus
CSA C22.2, number 142 or cULus
FM 3611
EN 50081-2 / EN 61000-6-4
EN 55011 group 1 class A
EN 60529
EN 61000-6-2
EN 61131-2
EN 60079-0:2006, EN 60079-15:2005
II 3 G Ex nA II T4
Startup time or restart time after a resetApprox. 10 seconds
Amount of user dataAs client: with XPUT/XGET: up to 212 bytes
As server:
• with XGET or READ: up to 222 bytes
• with XPUT or WRITE: up to 212 bytes
Max. e-mail size1024 characters
File systemMax. path length incl. file and drive names: 254 characters
Max. length of a file name: 99 characters
Max. nesting depth of the directories: 49
Server ports usedHTTP: 80
FTP command channel: 21
FTP data channel for FTP server: 3100 - 3199
S7 connection establishment: 102

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Siemens CP 243-1 Communications ProcessorSiemens CP 243-1 Communications ProcessorSiemens CP 243-1 Communications Processor
Siemens CP 243-1 Communications Processor

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