How to Select an Interface Relay for PLC Outputs
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- Part number
- 6GK7243-8RX30-0XE0
- Model no
- CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible.
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SIMATIC S7-1200Siemens 6GK7243-8RX30-0XE0 SIMATIC S7-1200 CP 1243-8 IRC Telecontrol PLC Communication Module
Siemens CP 1243-8 IRC telecontrol processor for SIMATIC S7-1200, SINAUT ST7, DNP3, IEC 60870-5, TS module expansion
Description
About the CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible.
About the CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible.
The Siemens CP 1243-8 IRC (6GK7243-8RX30-0XE0) is a communications processor that connects a SIMATIC S7-1200 to the TeleControl system Professional and SINAUT ST7, supporting DNP3 and IEC 60870-5 RTU protocols over a 10/100 Mbit/s Ethernet interface. It expands with a TS module for RS-232, modem, GSM, or ISDN connections, and includes an IPsec VPN with AES-256 encryption plus MSC client support over GPRS.
Certifications & Standards
- CE
- UKCA
- RCM
- RoHS
- EAC
- ATEX
- IECEx
- CCC-Ex
- EPD
Selection Notes
The IRC designation reflects its role as an integrated RTU communication processor for SINAUT ST7 and DNP3/IEC 60870-5 telecontrol - Ethernet and the TS module interface can run in parallel, so the same CP handles a primary Ethernet path to a control center plus a backup dial-up or radio path via modem, GSM, or ISDN module. Choose it over the LTE-only cellular variant when the site needs a wired Ethernet primary path with a serial or modem backup instead of cellular-only connectivity.
Applications
Fits SIMATIC S7-1200 substations and remote stations reporting to a TeleControl Server or SINAUT ST7 control center, where a wired Ethernet link needs a serial or dial-up backup path for redundancy.
Specification
Full specification
General 2
| product type designation | CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible. |
|---|---|
| product brand name | SIMATIC NET |
Transfer rate 2
| transfer rate: at the 1st interface | 10 ... 100 Mbit/s |
|---|---|
| transfer rate: at the 2nd interface | 0.3 ... 115.2 kbit/s |
Interfaces 6
| number of interfaces / according to Industrial Ethernet | 1 |
|---|---|
| number of electrical connections: at the 1st interface / according to Industrial Ethernet | 1 |
| number of electrical connections: for power supply | 1 |
| type of electrical connection: at the 1st interface / according to Industrial Ethernet | RJ45 port |
| type of electrical connection: at interface 2 / for external data transmission | Interface to the TS Module |
| type of electrical connection: for power supply | 3-pole terminal block |
Show all 117 specifications ↓ Show less ↑107 more values in Identification, Supply voltage, current consumption, power loss, Ambient conditions, Design, dimensions and weights, Product features, product functions, product components / general, Product functions / cloud connectivity, Performance data / open communication, Performance data / S7 communication, Performance data / IT functions, Performance data / telecontrol, Performance data / teleservice, Product functions / diagnostics, Product functions / security, Product functions / time, Standards, specifications, approvals, Standards, specifications, approvals / hazardous environments / header, Standards, specifications, approvals / Environmental Product Declaration, Logistics.
Identification 10
| Part number | 6GK7243-8RX30-0XE0 |
|---|---|
| Type designation | CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible. |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Phase-out announced by the manufacturer |
| EAN | 4047622187616 |
| ETIM class | EC001423 |
| eCl@ss | 27242208 |
Supply voltage, current consumption, power loss 7
| type of voltage / of the supply voltage | DC |
|---|---|
| supply voltage / 1 / from backplane bus | 5 V |
| supply voltage / external | 24 V |
| supply voltage / external / at DC / rated value | 24 V |
| consumed current: from backplane bus / at DC / at 5 V / typical | 0.25 A |
| consumed current: from external supply voltage / at DC / at 24 V / typical | 0.1 A |
| power loss [W] | 2.4 W; 1.25 W from S7-1200 backplane without TS module. 2.4 W from 24 V DC external with TS module |
Ambient conditions 6
| ambient temperature: for vertical installation / during operation | -20 ... +60 °C |
|---|---|
| ambient temperature: for horizontally arranged busbars / during operation | -20 ... +70 °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 | 110 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 2
| number of units: per CPU / maximum | 1 |
|---|---|
| number of units: note | One CP pluggable on left side of CPU, one TS Module pluggable left side of CP. |
Product functions / cloud connectivity 7
| protocol / is supported: Message Queuing Telemetry Transport (MQTT) | Yes |
|---|---|
| protocol / is supported: Advanced Message Queuing Protocol (AMQP) | No |
| product function / for cloud connectivity: trigger management | Yes |
| product function / for cloud connectivity: time stamping | Yes |
| product feature / for cloud connectivity / buffered message frame memory | No |
| number of active connections / for cloud connectivity | 1 |
| number of data points per device / maximum | 500 |
Performance data / open communication 1
| number of possible connections / for open communication: by means of T blocks / maximum | like CPU |
|---|
Performance data / S7 communication 4
| number of possible connections / for S7 communication: maximum | Configured S7-Connection for ST7-Communication |
|---|---|
| number of possible connections / for S7 communication: with PG connections / maximum | 2 |
| number of possible connections / for S7 communication: with OP connections / maximum | 1 |
| service: SINAUT ST7 via S7 communication | Yes |
Performance data / IT functions 1
| number of possible connections: as email client / maximum | 1 |
|---|
Performance data / telecontrol 16
| suitability for use: node station | No |
|---|---|
| suitability for use: substation | Yes |
| suitability for use: TIM control center | No |
| suitability for use: note | Ethernet and TS Module can be operated in parallel |
| control center connection | control center with ST7 function |
| by means of a permanent connection | supported |
| protocol / is supported: DNP3 | Yes |
| protocol / is supported: IEC 60870-5 | Yes |
| protocol / is supported: SINAUT ST7 protocol | Yes |
| product function / data buffering if connection is aborted | Yes; DNP3, IEC60870-5: 64000 events, SINAUT ST7: 16000 telegrams |
| number of data points per device / maximum | 500 |
| transmission format: for SINAUT ST7 protocol with multi-master polling / 10-bit | Yes |
| transmission format: for SINAUT ST7 protocol with polling or spontaneous / 10-bit or 11-bit | Yes |
| operating mode for scanning of data transmission: with dedicated line/radio link / with SINAUT ST7 protocol | Polling |
| operating mode for scanning of data transmission: with dial-up network / with SINAUT ST7 protocol | spontaneous |
| hamming distance: for SINAUT ST7 protocol | 4 |
Performance data / teleservice 7
| diagnostics function / online diagnostics with SIMATIC STEP 7 | Yes |
|---|---|
| product function: program download with SIMATIC STEP 7 | Yes |
| product function: remote firmware update | Yes |
| product functions / management, configuration, engineering protocol / is supported: SNMP v3 | Yes |
| configuration software: required | SINAUT ES V5.5 and STEP7 V13 SP1 or higher |
| configuration software: for PG configuring / required / SINAUT ST7 configuration software for PG | Yes |
| product function / is supported / identification link | Yes; acc. to IEC 61406-1:2022 |
Product functions / diagnostics 1
| product function / web-based diagnostics | Yes |
|---|
Product functions / security 15
| firewall version | stateful inspection |
|---|---|
| operating mode / Virtual Private Network (VPN) | Yes |
| product function / with VPN connection | IPsec, SINEMA RC |
| type of encryption algorithms / with VPN connection | AES-256, AES-192, AES-128, 3DES-168, DES-56 |
| type of authentication procedure / with VPN connection | Preshared key (PSK), X.509v3 certificates |
| type of hashing algorithms / with VPN connection | MD5, SHA-1 |
| number of possible connections / with VPN connection | 8 |
| product function: password protection for teleservice access | No |
| product function: encrypted data transmission | Yes |
| product function: MSC client via GPRS modem with MSC capability | Yes |
| protocol: is supported / MSC protocol | Yes |
| protocol: with Virtual Private Network MSC / is supported | TCP/IP |
| key length / for MSC / with Virtual Private Network | 128 bit |
| number of possible connections: as MSC client / with VPN connection | 1 |
| number of possible connections: as MSC server / with VPN connection | 0 |
Product functions / time 3
| protocol / is supported: NTP | Yes |
|---|---|
| time synchronization: from NTP-server | Yes |
| time synchronization: from control center | Yes |
Standards, specifications, approvals 5
| certificate of suitability / CE marking | Yes |
|---|---|
| certificate of suitability / UKCA marking | 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 3
| certificate of suitability / ATEX | Yes |
|---|---|
| certificate of suitability / IECEx | Yes |
| certificate of suitability / CCC / for hazardous zone according to GB standard | 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 | 0.187 kg |
|---|---|
| Package dimensions | 210 × 25 × 290 mm |
| Country of origin | DE |
| Shipping weight | 0.687 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6GK7243-8RX30-0XE0
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Ask us for the datasheet
Certifications
Certifications and standards
- / CE marking
- / UKCA marking
- / Regulatory Compliance Mark (RCM)
- / RoHS conformity
- / EAC approval
- / ATEX
- / IECEx
- / CCC / for hazardous zone according to GB standard
- Environmental Product Declaration
Quick answers
Questions about the CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible.
What is the HS code of CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible. for customs?
The tariff (HS) code on file for CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible. is 85176200.
What is the EAN of CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible.?
The EAN (GTIN) of CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible. is 4047622187616.
Where does CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible. ship from, and how fast?
CP 1243-8 IRC Communications processor CP 1243-8 IRC for operating a SIMATIC S7-1200 in the TeleControl system Professional; for SINAUT ST7; DNP3; IEC 60870-5, station type: RTU; WAN connections;1) Ethernet 2) Additionally expandable with TS module RS-232 or TS module modem or TS module GSM or TS module ISDN; Operation with TIM modules possible. ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
