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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power offers 3RK7243-2AA30-0XB0 quotations, manuals, AS-i module selection, and exact-model matching.

        3RK7243-2AA30-0XB0

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        1001 reviews ｜ Need a Specific Revision?
        The Siemens 3RK7243-2AA30-0XB0 CM 1243-2 AS-Interface master connects an S7-1200 CPU to as many as 62 AS-i field devices.
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        Ships by Wednesday, October 28
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 3RK7243-2AA30-0XB0

        • Manufacturer:
          Siemens
        • Part Number:
          3RK7243-2AA30-0XB0
        • Product Family:
          Siemens AS-Interface
        • Product Type:
          CM 1243-2 AS-Interface Master Communication Module
        • Stock:
          1
        • AS-Interface Version:
          V3.0
        • Master Profile:
          M4
        • AS-i Networks:
          1
        • Maximum AS-i Devices:
          62
        • Maximum AS-i Inputs:
          496
        • Maximum AS-i Outputs:
          496
        • Cycle Time with 31 Devices:
          5 ms
        • Cycle Time with 62 Devices:
          10 ms
        • Maximum Modules per CPU:
          3 communication modules total
        • Backplane Current:
          250 mA maximum
        • AS-i Profile-Conductor Current:
          100 mA maximum at 30 V
        • Power Loss:
          2.9 W
        • Rated Insulation Voltage:
          500 V
        • Galvanic Isolation:
          Yes
        • AS-i Connection:
          Screw-type
        • Supply Path:
          S7-1200 backplane bus
        • Status LEDs:
          AS-i, PF, CM, CER and DIAG
        • Configuration:
          STEP 7 and command interface
        • Protection Rating:
          IP20
        • Mounting:
          35 mm DIN rail
        • Horizontal Operating Temperature:
          0 to 55 °C
        • Vertical Operating Temperature:
          0 to 45 °C
        • Weight:
          0.3395 lbs (0.154 kg)
        • Estimated shipping dimensions:
          12.4x8x5cm
        • Tariff Code:
          85371098
        • Country of origin:
          Czech Republic
        • 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 AS-i Device Map Power Separation Configuration Path LED Diagnosis

        Features:

        • One AS-Interface V3.0 master links the S7-1200 CPU to as many as 62 field devices.
        • The backplane carries controller data while the AS-i profile conductors supply the field-network side.
        • Five LED groups separate network, power, module, configuration and diagnostic states.
        AS-i sensors and actuators exchange data with the master over the profile cable.

        The CM maps digital and analog values into S7-1200 process data and data records.

        The backplane returns those values and diagnostic states to the CPU while keeping the AS-i side galvanically isolated.

        The Siemens 3RK7243-2AA30-0XB0 CM 1243-2 AS-Interface Master may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Siemens 3RK7243-2AA30-0XB0 CM 1243-2 AS-i Master 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.

        Polling field devices and organizing their process data

        • Device capacity: One master addresses as many as 62 AS-i devices.
        • Digital map: Up to 496 inputs and 496 outputs enter the process image.
        • Analog map: Analog values use process-image addresses and data-record transfer.
        • Cycle time: Polling takes 5 ms for 31 devices and 10 ms for 62 devices.

        Keeping the controller backplane and AS-i network electrically distinct

        • Backplane current: The module draws up to 250 mA from the S7-1200 bus.
        • AS-i current: Up to 100 mA is drawn from the profile conductors at 30 V.
        • Isolation: Galvanic separation uses a 500 V rated insulation boundary.
        • Power loss: The module dissipates 2.9 W under documented conditions.

        Aligning the physical master with the S7-1200 project

        • STEP 7: The hardware and AS-i network are configured in the controller project.
        • Command interface: Program commands can access the documented master functions.
        • CPU capacity: No more than three communication modules in total are used per CPU.
        • Master profile: M4 functions follow AS-Interface specification V3.0.

        Separating network and module conditions at the front panel

        • AS-i: Shows the AS-Interface network state.
        • PF: Indicates the documented power-fault condition.
        • CM: Represents communication-module status.
        • CER and DIAG: Distinguish configuration error from diagnostic status.
        Description
        Siemens 3RK7243-2AA30-0XB0 is a SIMATIC S7-1200 CM 1243-2 communication module that serves as an AS-Interface V3.0 master. It connects one PLC station to as many as 62 AS-i sensors, actuators and other field devices.

        Across its single AS-i network, 3RK7243-2AA30-0XB0 polls 31 devices in 5 ms or 62 devices in 10 ms and maps as many as 496 inputs and 496 outputs into the S7-1200 data path. Digital data uses the process image, while analog data can use process-image addresses and data-record transfers.

        The S7-1200 backplane supplies 3RK7243-2AA30-0XB0 and carries data between the CPU and master function. A separate current path is drawn from the AS-i profile conductors, while 500 V rated insulation and galvanic separation keep the two sides electrically distinct.

        Configuration of 3RK7243-2AA30-0XB0 is performed with STEP 7 or the command interface, and front LEDs separate AS-i state, power fault, communication-module status, configuration error and diagnostics. The module snaps onto a 35 mm DIN rail beside the S7-1200 CPU.
        Alternative Names
        3RK72432AA300XB0 3RK7 243-2AA30-0XB0 3RK7243 2AA30 0XB0 Siemens 3RK7243-2AA30-0XB0 3RK7243-2AA30-0XB0 CM 1243-2 CM 1243-2 3RK7243-2AA30-0XB0 3RK 7243 2AA30 0XB0 3RK7243/2AA30/0XB0
        Technical notes
        The Siemens 3RK7243-2AA30-0XB0 process image can address up to 496 AS-i inputs and 496 outputs through one master network.
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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.
        VIEW ALL FAQS
        Why can Siemens 3RK7243-2AA30-0XB0 communicate with the CPU but show an AS-i fault?
        Siemens 3RK7243-2AA30-0XB0 uses separate backplane and AS-i paths; check profile-cable power, polarity, device addresses and the PF/AS-i LEDs.
        How long is the cycle time with 62 devices on 3RK7243-2AA30-0XB0?
        With 62 AS-i devices, 3RK7243-2AA30-0XB0 has a documented AS-Interface bus cycle time of 10 ms.
        How are analog values transferred through Siemens 3RK7243-2AA30-0XB0?
        Siemens 3RK7243-2AA30-0XB0 makes analog I/O available through process-image or peripheral addresses and data-record transfer.
        Why must the number of communication modules be checked around 3RK7243-2AA30-0XB0?
        An S7-1200 CPU can use a maximum of three communication modules in total, including 3RK7243-2AA30-0XB0.
        Which LEDs help diagnose a configuration problem on Siemens 3RK7243-2AA30-0XB0?
        On Siemens 3RK7243-2AA30-0XB0, compare AS-i, PF, CM, CER and DIAG so network, supply, module and configuration conditions remain separate.
        Can 3RK7243-2AA30-0XB0 be mounted directly in the field without a cabinet?
        No. The IP20 enclosure of 3RK7243-2AA30-0XB0 is intended for a protected DIN-rail installation.

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