SIEMENS 6AG1341-1CH02-7AE0 – CP 341 Serial Communication Processor | SIMATIC S7-300 Platform
Engineering Background
The SIEMENS 6AG1341-1CH02-7AE0 is the SIPLUS extreme variant of the CP 341 communication processor, engineered for SIMATIC S7-300 systems operating in harsh industrial environments. Designed to withstand extended temperature ranges, condensation, and corrosive atmospheres, this module is the preferred choice for process automation, energy infrastructure, and remote field installations where standard hardware cannot guarantee reliability.
Product Positioning
As a serial communication processor, the 6AG1341-1CH02-7AE0 extends the S7-300 CPU’s communication capability via RS422/RS485 interfaces, supporting ASCII, 3964(R), and RK 512 protocols. It offloads serial communication tasks from the CPU, enabling deterministic data exchange with drives, analyzers, barcode readers, and third-party PLCs — without impacting scan cycle performance.
Complete Technical Specifications
- Order Number (MLFB): 6AG1341-1CH02-7AE0
- Product Family: SIPLUS S7-300 CP 341
- Platform: SIMATIC S7-300
- Interface: RS422 / RS485 (sub-D 15-pin female)
- Supported Protocols: ASCII, 3964(R), RK 512
- Transmission Rate: 300 baud to 76.8 kbaud
- Supply Voltage: 5 VDC via S7-300 backplane bus
- Current Consumption (5V bus): Approx. 160 mA
- Operating Temperature: -25 °C to +70 °C (SIPLUS extended range)
- Storage Temperature: -40 °C to +85 °C
- Relative Humidity: 5% to 95% (non-condensing, with conformal coating)
- Degree of Protection: IP20
- Dimensions (W×H×D): 40 × 125 × 120 mm
- Weight: Approx. 240 g
- Country of Origin: Germany
- CE / UL Certified: Yes
- Firmware: Loadable via STEP 7 / TIA Portal
Proven Application Environments
- Oil & gas field RTU communication with SCADA systems
- Water treatment plant PLC-to-analyzer serial links
- Cement and mining conveyor drive integration via RK 512
- Railway trackside control cabinets (extreme temperature exposure)
- Chemical plant DCS-to-S7 serial gateway applications
- Offshore platform automation with high humidity and salt-air exposure
Engineering Advantages
- SIPLUS Conformal Coating: PCB-level protection against moisture, dust, and corrosive gases — exceeds standard CP 341 (6ES7341-1CH02-0AE0) environmental ratings
- CPU Offload Architecture: Dedicated communication co-processor eliminates serial I/O latency from the main CPU scan cycle
- Protocol Flexibility: ASCII mode supports custom framing; 3964(R) provides error-checked point-to-point links; RK 512 enables peer-to-peer S5/S7 data exchange
- Hot-swap Compatible: Supports S7-300 modular rack expansion without full system shutdown (with appropriate CPU configuration)
- Loadable Driver Architecture: Protocol firmware is field-upgradeable via STEP 7 or TIA Portal without hardware replacement
System Architecture & Signal Flow
The 6AG1341-1CH02-7AE0 mounts directly onto the S7-300 DIN rail rack and communicates with the CPU via the internal S7-300 backplane bus (P-bus). Serial data is transmitted and received through the front-panel RS422/RS485 sub-D connector. The module’s onboard processor handles protocol framing, error detection, and buffer management autonomously. The CPU accesses send/receive data via standard SFB/FC communication function blocks (e.g., P_SND_RK, P_RCV_RK, P_SND_ASCII) loaded from the SIMATIC communication library.
Typical wiring topology: S7-300 CPU → Backplane Bus → CP 341 (6AG1341-1CH02-7AE0) → RS485 2-wire or RS422 4-wire → Remote device (drive / analyzer / third-party PLC)
Sourcing & Quality Verification
- All units sourced from authorized SIEMENS distribution channels or verified OEM surplus with full traceability
- Each module inspected for firmware version, label integrity, and connector condition prior to dispatch
- Original SIEMENS packaging and documentation supplied where available
- Batch and serial number records maintained for warranty and compliance purposes
- Anti-counterfeit verification available upon request for critical infrastructure procurement
Procurement Process
- Submit your RFQ via [email protected] or place order directly on this page
- Receive order confirmation with lead time and shipping estimate within 1 business day
- Export documentation (commercial invoice, packing list, COO) provided for international orders
- DHL / FedEx / UPS express shipping available globally; sea freight for bulk orders
- Payment: T/T bank transfer, PayPal, or credit card via Shopify Payments
Technical FAQ
Q: What is the difference between 6AG1341-1CH02-7AE0 and 6ES7341-1CH02-0AE0?
A: The 6AG1341 prefix denotes the SIPLUS extreme variant with conformal coating and extended temperature range (-25 to +70 °C). The 6ES7341 is the standard industrial version rated for 0 to +60 °C. Functionally and electrically identical; the SIPLUS variant is specified for harsh environments.
Q: Which STEP 7 / TIA Portal version is required?
A: STEP 7 V5.4 SP5 or higher; TIA Portal V13 SP1 or higher with the S7-300 hardware support package installed.
Q: Can this module communicate with a Modbus RTU device?
A: Yes, via the ASCII driver with a custom Modbus RTU loadable driver (available from SIEMENS support or third-party libraries). Native Modbus RTU is not a factory-loaded protocol on this module.
Q: Is the module compatible with S7-400 racks?
A: No. The CP 341 is exclusively designed for the S7-300 rack form factor and backplane bus. For S7-400, use the CP 441 series.
Q: What is the warranty?
A: 12 months from date of shipment. DOA (Dead on Arrival) replacement within 30 days. Extended warranty available on request.
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