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3
FUNCTION LIST
This chapter describes the functions of the RJ51AW12AL. For details on the functions, refer to the following.
MELSEC iQ-R AnyWireASLINK Master Module User's Manual (Application)
AnyWireASLINK transmission
Function
Bit transmission
*1
Word transmission
Double verification
Slave module parameter read/write
*1 The availability of the function differs depending on the production information of the RJ51AW12AL. ( MELSEC iQ-R
AnyWireASLINK Master Module User's Manual (Application))
Address setting
Function
Automatic address detection function
Remote address change function
Same ID used detection function
Module with no ID setting detection
function
RAS
Function
Transmission cable short detection
function
Disconnected transmission cable
location detection function
Transmission cable voltage drop
detection function
Description
Exchanges I/O data of maximum 512 bits (input 256 bits, output 256 bits) between the RJ51AW12AL and a slave
module.
Exchanges I/O data of maximum 1024 words (input 512 words, output 512 words) between the RJ51AW12AL and a
slave module.
A double verification is an error control system. In this system, cycle data in AnyWireASLINK transmission is
recognized as valid data if the data matches with the data of the last transmission or is ignored as invalid data if the
data does not match with the last data.
A double verification ensures reliability of communication.
In AnyWireASLINK, parameter information of a slave module and the AnyWireASLINK system in addition to I/O
information are sent and received between the RJ51AW12AL and a slave module.
Execute this function to check or change parameter information of a slave module.
Description
Enables the RJ51AW12AL to detect and store the ID (address) of the connected slave module when the SET switch
on the RJ51AW12AL is pressed.
Changes an ID (address) of a slave module using the buffer memory area without an address writer.
Checks whether the same ID is used for multiple slave modules through automatic address detection or same
address used check. The LEDs of the relevant slave modules are forcibly turned on.
Detects slave modules with no ID assigned (default ID) through automatic address detection or same address used
check.
Description
Protects the system by detecting the current out of the specifications of the AnyWireASLINK system across DP-DN or
24V-DP and stopping the transmission.
Notifies the ID of a slave module that has been separated from the RJ51AW12AL because of disconnection in the
transmission cables (DP, DN) between the RJ51AW12AL and the slave module, to locate the disconnection in the
transmission cables (DP, DN) from the upper system.
Detects a voltage drop in the 24VDC external power supply, enabling the RJ51AW12AL to detect a failure in the
24VDC external power supply or a wiring error from the upper system.
3 FUNCTION LIST
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3
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