Product Short Description
Product Name: MELSEC-A Series I/O Link Remote I/O System Master Module.
Product Overview: The A1SJ51T64 is a master module used in the MELSEC I/O Link remote I/O system. It enables flexible, bus-connected communication between the master and remote I/O stations without requiring terminal resistors. Programs can be created using only X and Y devices, simplifying development.
Description
Technical Specifications:
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Max Controllable I/O Points: 128 points
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I/O Refresh Time: Approx. 5.4 ms
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Communication Cable: Twisted-pair cable 0.75 mm² or Cabtyre cable 0.75 mm² or over
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Communication Speed: 38400 BPS
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Transmission Distance: 200 m overall
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Connectable Remote Stations: 16 stations
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External Power Supply: 21.6 to 27.6 VDC, 90 mA (Typ 24 VDC)
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Current Consumption (5 VDC): 115 mA
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Occupied Points: 64 points (I/O allocation: 64 output points)
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Weight: 0.3 kg
Communication Method: Register insertion method, combining frame-synchronization and bit synchronization with parity check error control.
Application: Used in MELSEC-A Series PLC systems for distributed I/O control in industrial automation setups requiring up to 128 I/O points.
Installation & Usage Notes: The module can be installed in any number within the PC CPU I/O point limit. It supports bus connections such as T-branches. Ensure correct external power supply of 24 VDC and proper twisted-pair cabling for stable 38400 BPS communication.
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