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A1SJ71AP21
The Mitsubishi A1SJ71AP21 is a data link module designed for robust communication systems. It accommodates up to the maximum I/O points permitted by the associated CPU and maintains a power consumption of 0.33A at 5V DC.
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Technical specifications for A1SJ71AP21
| Manufacturer | Mitsubishi |
|---|---|
| Product Line | A Series |
| Part Number | A1SJ71AP21 |
| Weight | 0.63 lbs (0.28 kg) |
| Device Type | Data Link Module |
| Maximum Link Points Per Station | Up to the maximum I/O points for the CPU used |
| Power Consumption (5V DC) | 0.33A |
| Mass | 0.30 kg |
| I/O Points Occupied | 32 points |
| System's Power Failure Tolerance | Within 20 ms |
| Data Transfer Rate | 1.25 Mbps |
| Communication Protocol | Half-duplex bit serial |
| Transmission Mode | Duplex loop |
| Total Loop Length | Max. 10 km (32810 ft), with 1 km station spacing |
| Maximum Stations in Loop | Max. 65 stations (1 master, 64 local/remote) |
| Signal Demodulation Technique | CMI |
| Transmission Protocol | HDLC (frame-based method) |
| Connector Type | 2-core optical connector plug (User-supplied) Yes |
| Signal Loss per Distance | Max. 12 dB per km |
The Mitsubishi A1SJ71AP21 device functions as a data link module, facilitating effective communication within a network of programmable logic controllers. It is designed to occupy 32 I/O points and caters to various CPU configurations, adhering to the maximum I/O capacity for optimal performance. Its power requirements are modest, drawing 0.33A from a 5V DC source.
Communication capabilities include a data transfer rate of 1.25 Mbps, enabling efficient information exchange. Operating under a half-duplex bit serial communication protocol, the system is configured with a duplex loop transmission mode, ensuring reliable data flow. The total loop length supported by this module can reach a maximum of 10 km (approximately 32,810 feet), with well-defined station spacing of 1 km.
The data link module allows connection for up to 65 stations, comprising one master station and up to 64 local or remote devices. CMI is employed as the signal demodulation technique, and frame-based data transmission is managed through an HDLC protocol. Additionally, each device connects using a user-supplied 2-core optical connector plug.
This module also addresses signal integrity, with maximum signal loss capped at 12 dB for every kilometer of transmission. Importantly, the system ensures a power failure tolerance of just 20 ms, which helps maintain communication reliability during transient power interruptions.
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