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6ES7341-1AH02-0AE0

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Siemens 6ES7341-1AH02-0AE0 is a SIMATIC S7-300 CP 341 communication processor with one isolated RS232C point-to-point interface.
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Technical specifications for 6ES7341-1AH02-0AE0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7341-1AH02-0AE0
  • Product Family:
    Siemens Simatic S7-300
  • Product Type:
    SIMATIC S7-300 CP 341 RS232C Communication Processor
  • Stock:
    1
  • Serial Interfaces:
    1
  • Electrical Interface:
    Isolated RS232C / V.24
  • Connector:
    9-pin Sub-D
  • Transmission Rate:
    0.3 to 115.2 kbit/s
  • Maximum Cable Length:
    15 m
  • Supported Procedures:
    ASCII, 3964(R), printer, and RK 512
  • Maximum Telegram Length:
    4096 bytes
  • External Supply:
    24 V DC
  • Maximum External-Supply Current:
    100 mA
  • Maximum Backplane Current:
    70 mA at 5 V DC
  • Typical Power Loss:
    1.6 W
  • Maximum Power Loss:
    2.4 W
  • Status Indicators:
    RxD, TxD, and SF LEDs
  • Operating Temperature:
    0 to +60 °C
  • Storage and Transport Temperature:
    -40 to +70 °C
  • Function-Block Memory Requirement:
    Up to 6100 bytes RAM
  • Weight:
    0.666 lbs (0.302 kg)
  • Estimated shipping dimensions:
    15.3x12.8x5.2cm
  • Tariff Code:
    8517623700
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Serial Port Protocols Diagnostics Cabling

Features:

  • One isolated RS232C channel adds point-to-point serial communication to an S7-300 station.
  • ASCII, 3964(R), printer, and RK 512 procedures control telegram handling.
  • RxD, TxD, and SF indicators separate traffic activity from module faults.
Siemens 6ES7341-1AH02-0AE0 moves serial telegrams between the front interface and the S7-300 program.

The selected procedure on 6ES7341-1AH02-0AE0 defines framing, acknowledgements, and buffer handling.

External interface supply and backplane logic power are separate electrical paths on 6ES7341-1AH02-0AE0.

The Siemens 6ES7341-1AH02-0AE0 SIMATIC S7-300 CP 341 RS232C Communication Processor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7341-1AH02-0AE0 SIMATIC S7-300 CP 341 RS232C Communication Processor Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

RS232C Connection Boundaries

  • Partner link: The nine-pin Sub-D interface connects one point-to-point serial device.
  • Isolation: The RS232C channel is electrically isolated from the internal controller-side circuitry.
  • Cable boundary: The installed serial path must remain within the documented length and signal conditions.
  • Port test: RxD and TxD activity helps determine whether data reaches and leaves the interface.

Telegram Procedure Selection

  • ASCII: User-defined character framing supports transparent serial data exchange.
  • 3964(R): The procedure adds coordinated telegram transfer and acknowledgement handling.
  • RK 512: The protocol organizes the documented controller-oriented data services.
  • Printer mode: Formatted output can be directed to a supported serial printer application.

Traffic and Module Fault Checks

  • Receive state: The RxD indicator shows incoming serial activity independently of PLC data processing.
  • Transmit state: The TxD indicator confirms that the module is driving the configured serial path.
  • Module fault: SF directs troubleshooting toward configuration, supply, or module diagnostics.
  • Buffer review: PLC status and receive/send buffers identify telegrams rejected after physical transfer.

Supply and Partner Wiring

  • Supply terminals: L+, M, and ground provide the documented external interface supply connection.
  • Signal assignment: The Sub-D pinout must match the DTE or DCE role of the serial partner.
  • Reference path: Cable shield and signal reference must follow the documented RS232C arrangement.
  • Commissioning: Confirm baud rate, data bits, parity, stop bits, handshaking, and procedure at both ends.
Description
Built for the SIMATIC S7-300 rack, Siemens 6ES7341-1AH02-0AE0 is a CP 341 communication processor that adds one isolated RS232C point-to-point channel. It handles serial telegram exchange separately from the CPU scan while passing user data and status through the backplane.

At the front of 6ES7341-1AH02-0AE0, the nine-pin Sub-D interface connects the configured serial partner. The selected ASCII, 3964(R), printer, or RK 512 procedure determines framing, acknowledgements, and the way telegrams move between the port and the PLC program.

Power for the external interface electronics of 6ES7341-1AH02-0AE0 enters through the L+, M, and ground terminals, while the S7-300 backplane supplies the module logic. RxD, TxD, and SF indicators then provide separate evidence for received traffic, transmitted traffic, and module faults.

Before replacing 6ES7341-1AH02-0AE0, the hardware address, serial parameters, protocol blocks, and receive/send buffers must be preserved together. Restoring only baud rate cannot reproduce the complete data exchange if framing or PLC calls differ.
Alternative Names
6ES73411AH020AE0 6ES7341 1AH02 0AE0 6ES 7341 1AH02 0AE0 Siemens 6ES7341-1AH02-0AE0 6ES7341-1AH02-0AE0 CP 341 6ES7341-1AH02-0AE0 RS232C Processor 6ES7341-1AHO2-0AEO 6ES734I-1AH02-0AE0
Technical notes
Serial framing, PLC communication blocks, and the external partner must use the same procedure before Siemens 6ES7341-1AH02-0AE0 can exchange complete telegrams.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why does 6ES7341-1AH02-0AE0 show TxD activity but receive no reply?
Compare the 6ES7341-1AH02-0AE0 Sub-D pinout, DTE/DCE arrangement, partner readiness, baud rate, framing, handshake, cable length, and selected procedure.
How should an SF indication on 6ES7341-1AH02-0AE0 be investigated?
Read the 6ES7341-1AH02-0AE0 module diagnostics, then verify external supply, hardware configuration, interface parameters, PLC blocks, buffer use, and the connected serial device.
Why can 6ES7341-1AH02-0AE0 receive characters that the PLC program never uses?
Check the 6ES7341-1AH02-0AE0 receive block calls, instance data, buffer length, end criteria, error outputs, procedure choice, and destination addresses.
What must be retained before replacing 6ES7341-1AH02-0AE0?
Save the 6ES7341-1AH02-0AE0 rack address, hardware project, protocol parameters, function blocks, instance data, telegram formats, partner wiring, and external-supply connections.
Why does a long telegram fail while short messages work on 6ES7341-1AH02-0AE0?
Review the 6ES7341-1AH02-0AE0 telegram length, receive buffer, framing timeout, PLC block parameters, partner pacing, handshaking, and error status for the selected procedure.
How can wiring and protocol errors be separated on 6ES7341-1AH02-0AE0?
First confirm RxD and TxD activity on 6ES7341-1AH02-0AE0 with a known cable, then compare framing, procedure acknowledgements, PLC buffer status, and partner responses.