The Allen-Bradley 1768-M04SE serves as a high-performance motion synchronization gateway for the CompactLogix 1768 platform. This module coordinates up to four axes of motion using the SERCOS (Serial Real-time Communication System) interface, providing a deterministic digital link between the controller and servo drives. We supply this unit as 100% Brand New and Original, ensuring precise execution of complex motion profiles including electronic gearing and camming.
| Parameter | Specification Details |
| Axes Supported | Up to 4 SERCOS Drives |
| Compatible Drives | Kinetix 2000, 6000, 7000; Ultra 3000 SERCOS |
| Data Rate | 4 Mbps or 8 Mbps (Selectable) |
| Cycle Time | 0.5 ms (8M rate/4 drives) or 1.0 ms (4M rate/4 drives) |
| SERCOS Class | Class B (Position or Velocity control) |
| Fiber Optic Connector | F-SMA standard screw-type |
| Core Diameter | 980 µm (Plastic) / 200 µm (Glass) |
| Power Dissipation | 5.04 Watts |
| Operating Temp | 0°C to 60°C (32°F to 140°F) |
| Series | 1768 CompactLogix |
Immunity to Electromagnetic Interference (EMI): The 1768-M04SE utilizes fiber-optic cabling for all drive communications. This optical isolation completely eliminates ground loops and electrical noise interference, which frequently cause signal corruption in traditional copper-based motion systems.
Deterministic Real-Time Control: By employing the SERCOS protocol, the module guarantees synchronized updates for all four axes. This determinism is critical for high-speed packaging and printing applications where even microsecond jitters can cause mechanical misalignment.
Simplified Topology: The "daisy-chain" fiber optic ring reduces wiring complexity significantly. Engineers connect the module to the first drive, then loop through subsequent drives back to the module, creating a redundant path that simplifies troubleshooting and installation.
Deep Kinetix Integration: The module integrates natively with Studio 5000 Logix Designer. This allows engineers to perform drive configuration, auto-tuning, and motion diagnostics directly through the controller software without needing third-party commissioning tools.
Advanced Motion Capabilities: This hardware supports sophisticated Motion Instructions (MAG, MAP, MCTP), enabling complex synchronization such as virtual master axes, high-speed registration, and non-linear camming.
Which Kinetix drives work with the 1768-M04SE?
This module specifically supports SERCOS-enabled drives, including the Kinetix 2000, 6000, 7000, and the Ultra 3000 series with SERCOS interface. It does not support Kinetix 350 or 5500 drives, as those utilize EtherNet/IP for motion.
What type of fiber optic cable should I use?
The 1768-M04SE features F-SMA screw-type connectors. You can use 980 µm plastic fiber (POF) for short distances within a single cabinet or 200 µm Hard Clad Silica (HCS) glass cable for longer runs or environments with wider temperature swings.
Does this module occupy a standard CompactLogix slot?
No, the 1768-M04SE attaches to the left side of a 1768-L43 or 1768-L45 controller. It utilizes the high-speed 1768 backplane, which provides the necessary bandwidth for motion control that the standard 1769 backplane cannot support.
What is the maximum number of axes I can control in one system?
While a single 1768-M04SE supports 4 axes, the 1768-L43 controller supports up to 2 of these modules (8 axes total), and the 1768-L45 supports up to 4 modules (16 axes total), depending on your application's processor overhead.
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