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MELSEC-Q Series

AnyWireASLINK

Linking the sensor with the programmable controller

●AnyWireASLINK master module QJ51AW12AL DB

The AnyWireASLINK master module links the sensor inputs and outputs to the programmable controller. The module enables flexible layout of sensors with 512 I/O points. The sensor power can be supplied to the AnyWireASLINK transmission line (2-wire) for communication, allowing sensors to be added easily. With the MELSEC-Q/L/F Series, faulty sensors can be detected and the slave module settings can be managed at once by GX Works2 engineering environment, further reducing the engineering time.

AnyWireASLINK

System configuration example

Basic configuration

Either the 2-wire type or 4-wire slave device can be selected according to the load current for AnyWireASLINK.
In addition to the 2-wire type, a 4-wire type can also be used by supplying the local power.

2-wire type

If the load current is low, 2-wire type (non-insulated) slave devices can be used without an external power supply.

4-wire type

The 4-wire type (insulated) slave devices require an external 24 V DC power supply to satisfy large load current applications, for example.

System configuration example

Preventing intermittent operation stops

AnyWireASLINK can be used to monitor and save the sensor information within the programmable controller.
Parameter settings of the AnyWireASLINK can also be changed via the programmable controller. Perform "preventive maintenance" with this function to prevent intermittent stops before they happen.

Preventing intermittent operation stops

Prevent intermittent stops with preventive maintenance!
  • Start maintenance early by checking the incoming light amount.
  • Change the ON/OFF sensitivity to keep operating up to the maintenance period.

Reducing the setup time, and providing the traceability

AnyWireASLINK enables the set value to be registered at once to multiple sensors via a GOT (HMI) or personal computer. Also, the initial set values can be re-confirmed easily without having to read each sensor individually.


  • Register set values to multiple sensors, and automatically read the initial set values.

Reducing the setup time, and providing the traceability

Model QJ51AW12AL
Number of connected I/O points Max. 512 points (256 input points/256 output points)
Number of connected modules Max. 128 modules (varies according to each slave module's current consumption)
Maximum transmission distance (overall length)*1 200 m*2
Transmission method DC power superimposed total frame cyclic method
Connection style Bus type (multi-drop method, T-branch method, tree branch method)
Transmission protocol Dedicated protocol (AnyWireASLINK)
Error control Checksum, double verification method
Transmission clock 27.0 kHz
RAS function Transmission cable break position detection function,
transmission cable short-circuit detection function,
transmission power drop detection function
Transmission cable (DP, DN) ・ UL compatible universal 2-wire cable (VCTF, VCT 1.25 mm2, 0.75 mm2, rated temperature 70℃ or more)
・ UL compatible universal cable (1.25 mm2, 0.75 mm2, rated temperature 70℃ or more)
・ Dedicated flat cable (1.25 mm2, 0.75 mm2, rated temperature 90℃)
Power cable (24 V, 0 V)*1 ・ UL compatible universal 2-wire cable (VCTF, VCT 0.75 mm2...2.0 mm2, rated temperature 70℃ or more)
・ UL compatible universal cable (0.75 mm2...2.0 mm2, rated temperature 70℃ or more)
・ Dedicated flat cable (1.25 mm2, 0.75 mm2, rated temperature 90℃)
Transmission cable supply current*1 Using 1.25 mm2 cable: Max. 2 A
Using 0.75 mm2 cable: Max. 1 A
External power supply Voltage: 21.6...27.6 V DC (24 V DC -10...+15%), ripple voltage 0.5 Vp-p or less
Recommended voltage: 26.4 V DC (24 V DC +10%)
Module current consumption: 0.1 A
Transmission cable current supply: Max. 2 A*1

*1: Refer to the manual for the relation of the overall length, transmission cable (DP, DN) wire diameter and transmission cable current supply. In some slave modules with cables, the wire diameter of the transmission cable (DP, DN) integrated with the module may be 0.75 mm2 or less.

*2: With the slave module having an integrated transmission cable (DP, DN) and module, the length of the transmission cable (DP, DN) is included in the overall length.