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6ES7972-0CB35-0XA0

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Siemens 6ES7972-0CB35-0XA0 is a TS Adapter II analog TeleService unit with an integrated analog modem, MPI/DP connection, RS232 port, and USB parameterization.
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Technical specifications for 6ES7972-0CB35-0XA0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7972-0CB35-0XA0
  • Product Family:
    Siemens Simatic S7-300
  • Product Type:
    SIMATIC S7 TS Adapter II Analog TeleService Adapter
  • Stock:
    1
  • TeleService Modem:
    Integrated analog modem
  • Telephone Interface:
    RJ12 analog network connection
  • Automation Interface:
    MPI/PROFIBUS DP, RS485
  • Maximum Bus Rate:
    12 Mbit/s
  • External Modem Interface:
    RS232
  • Maximum RS232 Rate:
    115.2 kbit/s
  • Parameterization Interface:
    USB 1.1
  • USB Data Rate:
    12 Mbit/s
  • Rated Supply:
    24 V DC
  • Permitted Supply Range:
    20.4 to 28.8 V DC
  • Typical Current Consumption:
    44 mA
  • Maximum Current Consumption:
    120 mA
  • Maximum Inrush Current:
    700 mA for 8 µs
  • Power Sources:
    MPI connector or external 24 V DC
  • Bus Connection:
    SIMATIC S7 and C7 MPI/DP systems
  • Parameter Storage:
    Internal adapter parameter set
  • Weight:
    1.349 lbs (0.612 kg)
  • Estimated shipping dimensions:
    29.1x21x5.3cm
  • Tariff Code:
    8517629900
  • 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 MPI/DP Link Modem Path USB Setup Power & Setup

Features:

  • An integrated analog modem connects the TeleService adapter to an analog telephone network.
  • The MPI/DP interface links remote service traffic to a SIMATIC S7 or C7 automation bus.
  • RS232 supports an external-modem path while USB is reserved for local parameterization.
Siemens 6ES7972-0CB35-0XA0 converts a remote analog-line session into communication with the connected MPI/DP station.

The RS232 and USB connectors on 6ES7972-0CB35-0XA0 serve external-modem and local-setup tasks rather than the same traffic path.

Power for 6ES7972-0CB35-0XA0 comes from the MPI connector or a valid external 24 V DC feed.

The Siemens 6ES7972-0CB35-0XA0 SIMATIC S7 TS Adapter II Analog TeleService Adapter may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7972-0CB35-0XA0 SIMATIC S7 TS Adapter II Analog TeleService Adapter 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.

Automation Bus Connection

  • Bus role: The RS485 interface carries service communication to the connected MPI or PROFIBUS DP network.
  • Bus rate: The adapter follows the configured network rate up to the documented maximum.
  • Station access: Remote communication reaches only the S7 or C7 stations permitted by the network and TeleService configuration.
  • Startup check: Bus address, connector, cable, termination, and network parameters must agree with the installed segment.

Telephone and External-Modem Roles

  • Analog line: The RJ12 connection links the integrated modem to the analog telephone network.
  • Integrated modem: The modem converts telephone-line signaling into the adapter communication session.
  • RS232 option: The serial interface connects a documented external modem when that path is configured.
  • Line diagnosis: Dialing, country settings, line quality, modem response, and remote number must be checked separately from MPI/DP.

Local Parameterization Interface

  • USB role: USB 1.1 provides a local engineering path for adapter parameters.
  • Data rate: The local USB connection operates at the documented full-speed rate.
  • Parameter set: Bus, modem, access, and TeleService settings are written to the adapter before remote use.
  • Boundary: USB setup does not replace the telephone, RS232, or MPI/DP operating connections.

Supply Selection and Commissioning

  • MPI supply: The adapter can receive operating power from the connected MPI interface.
  • External supply: A separate 24 V DC source is available when the bus cannot provide the required power.
  • Startup current: The supply path must tolerate the documented inrush without dropping below the operating range.
  • Commissioning order: Confirm supply, local parameters, bus access, modem response, and remote login before enabling service use.
Description
Siemens 6ES7972-0CB35-0XA0 is a SIMATIC S7 TS Adapter II analog unit that connects a remote service path to an MPI or PROFIBUS DP automation network. Its integrated analog modem terminates the telephone line, while the bus-side interface exchanges data with the connected S7 or C7 station.

The communication paths of 6ES7972-0CB35-0XA0 have different roles: RJ12 serves the analog telephone network, MPI/DP links the automation bus, RS232 accepts a documented external-modem path, and USB is reserved for local parameterization. Treating these connectors as interchangeable prevents a valid TeleService connection.

Power for 6ES7972-0CB35-0XA0 can come through the MPI connector or through an external 24 V DC supply. The selected source must remain inside the permitted range and support the startup current without disturbing the connected bus.

Before a remote session is established, 6ES7972-0CB35-0XA0 requires matching bus parameters, modem settings, telephone-line conditions, and TeleService security configuration. Local USB setup writes the adapter parameters; it does not replace the MPI/DP or modem communication path used during operation.
Alternative Names
6ES79720CB350XA0 6ES7972 0CB35 0XA0 6ES 7972 0CB35 0XA0 Siemens 6ES7972-0CB35-0XA0 6ES7972-0CB35-0XA0 TS Adapter II 6ES7972-0CB35-0XA0 TeleService Adapter 6ES7972-OCB35-OXAO 6ES7972-0CB35-0XAO
Technical notes
Siemens 6ES7972-0CB35-0XA0 separates analog-line, MPI/DP, RS232, and USB roles; each connector must follow its documented communication path.
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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 can 6ES7972-0CB35-0XA0 dial successfully but fail to reach the PLC?
Check the 6ES7972-0CB35-0XA0 MPI/DP address, baud rate, cable, termination, station access rights, network state, and TeleService parameters.
What should be checked when 6ES7972-0CB35-0XA0 does not detect the analog line?
Inspect the 6ES7972-0CB35-0XA0 RJ12 wiring, line type, dial tone, country setting, modem parameters, telephone service, and external surge protection.
Can USB on 6ES7972-0CB35-0XA0 be used as the normal PLC communication port?
No. The USB connection on 6ES7972-0CB35-0XA0 is for local parameterization; PLC access uses the configured MPI/DP service path.
When is the RS232 connector on 6ES7972-0CB35-0XA0 required?
Use the 6ES7972-0CB35-0XA0 RS232 interface only for the documented external-modem arrangement rather than the integrated analog-modem path.
Why does 6ES7972-0CB35-0XA0 restart when a call begins?
Measure the 6ES7972-0CB35-0XA0 supply during startup, verify the 20.4–28.8 V DC range, connector power, source capacity, polarity, and wiring resistance.
What must be saved before replacing 6ES7972-0CB35-0XA0?
Record the 6ES7972-0CB35-0XA0 bus address, baud rate, modem and country parameters, access settings, telephone number, supply source, and cabling.