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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power helps source HE800JCM205 and verify buffer and register compatibility.

        HE800JCM205

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        1001 reviews ｜ Need a Specific Revision?
        Horner HE800JCM205 is a SmartStack SAE J1939 module with ten receive and ten transmit buffers controlled through PLC registers and ladder logic.
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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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        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 HE800JCM205

        • Manufacturer:
          HORNER
        • Part Number:
          HE800JCM205
        • Product Family:
          HORNER
        • Product Type:
          SAE J1939 Communication Module
        • Stock:
          1
        • Network Standard:
          SAE J1939 over CAN 2.0B
        • Network Rate:
          250 kbit/s
        • Receive Buffers:
          10
        • Transmit Buffers:
          10
        • Configuration:
          PLC registers and ladder logic
        • Weight:
          0.595 lbs (0.27 kg)
        • Tariff Code:
          8537101190
        • Country of origin:
          USA
        • 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 Buffers Live Setup Bus Status Use Cases

        Features:

        • Provides ten receive and ten transmit message buffers.
        • Uses PLC registers and ladder logic for configuration.
        • Supports communication changes during controller operation.
        The Horner HE800JCM205 is differentiated by its buffer model: individual receive and transmit slots give ladder logic direct control over the messages that matter to the application.

        Register-based definitions allow a running machine to switch supported PGN assignments when operating modes change, without treating the entire interface as static hardware.

        This flexibility also raises the importance of preserving control bits, buffer lengths and data registers together whenever the project is restored or migrated.

        The Horner HE800JCM205 SAE J1939 Communication Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        HE800JCM205 SAE J1939 Communication Module Manuals, Datasheets, Links 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.
        • Receive Slots: Ten independent buffers let the controller watch selected J1939 messages without forcing unrelated PGNs into the same handling path.
        • Transmit Slots: Ten outbound buffers allow different messages to carry their own data length, control and trigger behavior.
        • Buffer Pairing: Keeping each control block beside its data block reduces the risk that ladder logic enables one message while updating another.
        • Register Definitions: Communication properties are written through PLC registers, making the saved register map part of the module configuration.
        • Ladder Coordination: Logic controls when new definitions become active, so initialization order matters after startup or program download.
        • On-the-Fly Changes: Supported buffer assignments can change during operation, enabling mode-dependent traffic without a fixed offline scan table.
        • Health Indication: Green status confirms that the interface is operating before individual buffer controls are examined.
        • Traffic Indication: Orange activity shows that J1939 frames are present even when a configured buffer does not accept them.
        • Fault Isolation: Visible traffic with unchanged data usually directs attention to PGN matching, buffer enable state or register mapping.
        • Mode-Dependent Machines: Runtime buffer changes suit equipment that monitors different vehicle messages as operating functions change.
        • Selective Gateways: Ladder logic can choose which J1939 data enters controller logic and which defined messages are transmitted.
        • Service Diagnostics: Separate message buffers make it practical to enable temporary diagnostic traffic without redesigning the normal communication set.
        Description
        Ten inbound and ten outbound message buffers make the Horner HE800JCM205 a ladder-managed path into SAE J1939 traffic. It handles 29-bit CAN 2.0B frames at 250 kbit/s and supports request, monitoring and transmission functions on the vehicle network.

        Rather than relying on one fixed scan list, the controller project defines each message path through dedicated PLC registers. Ladder logic coordinates those buffer settings, allowing supported communication assignments to be changed while the controller remains in operation.

        Bi-color indicators separate module health from observed bus traffic, which is useful when a message fails because of configuration rather than wiring. For the Horner HE800JCM205, the register layout, buffer control bits and PGN definitions should be reviewed as a set before an existing program is moved to replacement hardware.
        Alternative Names
        HE800-JCM205 HE 800 JCM 205 HE800 JCM205 HE-JCM205 Horner HE800JCM205 SmartStack JCM205 JCM205 J1939 Buffer Module HE800JCM205 CAN Module
        Technical notes
        Horner HE800JCM205 provides ten receive buffers and ten transmit buffers at a fixed 250 kbit/s J1939 rate. Buffer definitions can be changed through controller registers during operation.
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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 does a configured buffer on Horner HE800JCM205 remain empty?
        For Horner HE800JCM205, confirm the buffer is enabled, the PGN and addressing fields match incoming frames, and the data register block is not being overwritten by ladder logic.
        How can Horner HE800JCM205 change messages without stopping the controller?
        Horner HE800JCM205 accepts supported buffer definitions through PLC registers, and ladder logic can apply the new values while the application is running.
        What must be preserved when moving a Horner HE800JCM205 project?
        A Horner HE800JCM205 migration should keep buffer definition registers, control bits, data areas and initialization sequence together; copying only the data registers is insufficient.
        Why can Horner HE800JCM205 show bus activity while ladder data stays unchanged?
        The Horner HE800JCM205 activity indicator reports network frames generally, but a receive buffer updates only when its configured identifier and control conditions match.
        How many independent messages can Horner HE800JCM205 handle?
        Horner HE800JCM205 provides ten receive buffers and ten transmit buffers, with each buffer configured for the message behavior required by the controller program.
        What prevents inconsistent transmissions from Horner HE800JCM205?
        For Horner HE800JCM205, update payload registers before enabling or triggering the related transmit buffer and keep configuration writes sequenced in ladder logic.

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