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A1SJ71T21B
Mitsubishi MELSECNET/B Data Link Module

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2 year warranty 2 year warranty*

Worldwide delivery Worldwide delivery

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*Manufacturer's warranty does not apply

MELSECNET/B Data Link Module
Description

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The Mitsubishi A1SJ71T21B is a MelsecNet/B data link module for AnS Series PLCs. This interface module allows the CPU to interface with external devices, such as computers and printers, as well as other PLC CPUs. Although now obsolete, Northern Industrial continue to support users of the A1SJ71T21B data link modules. The module has a 5 VDC current consumption of 0.66 A and can have a maximum of 32 connected stations. For more detailed technical information, please see the performance specifications in the table below.

A1SJ71T21B Specifications
Part numberA1SJ71T21B
Max. number of device points
allocated to communication
linkage per station 

B 1024 (128 bytes)
W 1024 (2048 bytes) 
Current consumption (5 VDC)0.65 A
Weight0.22 kg
Allowable momentary power
failure time 
20 msec
Communication speeds125K bps/250K bps/500K bps/1 M bps
Communication methodHalf duplex bit serial method
Synchronous methodFrame synchronous method
Transmission path methodBus type
Overall extension distanceVaries according to the communication speed
Number of connected stationsMax. 32 units (1 master station, 31 local stations)
Modulation methodNRZI method
Transmission formatConforms to HDLC (frame method)
Error control systemRetry due to CRC (generating polynomial X16 + X12 + X5 + 1)
and timeout 
RAS functionDiagnostic function such as host link line
Connecting terminalTerminal block
Applicable cableShielded twisted wire pair cable
Number of occupied I/O points32 points
PDFs

el Espec

Las especificaciones siguientes se aplican a este producto

ManufacturerMitsubishi
Range typeInterface Module
RangeMelsec AnS Series
PDFs

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