Mitsubishi Electric AnyWire ASLINK, User Manual

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10 TROUBLESHOOTING
10.4 Troubleshooting by Symptom
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10
When AnyWireASLINK system communication is unstable
When the AnyWireASLINK system communication becomes unstable (I/O signals cannot be read or written correctly), check
the following items.
When the easy replacement setting for one slave module is not
available
When the easy replacement setting for one slave module is not available, check the following items.
Item Action
Is the ambient temperature for the module within the specified
range? Keep the ambient temperature within the specified range by taking action such as
removing heat sources.
Is any noise affecting the system? Take measures to reduce noise by using shielded cables for the wiring of the
AnyWireASLINK system.
Is the terminating unit connected properly? Pay attention to the polarities of the terminating unit and connect it properly.
Does the total wiring length of the transmission cables (DP, DN)
exceed the specified range? Adjust the total wiring length of the AnyWireASLINK system within the specified range.
Do the transmission cables (DP, DN) satisfy the specifications? • Use transmission cables (DP, DN) that satisfy the specifications such as the type, wire
diameter, and tightening torque to the terminal block.
• Do not run multiple transmission cables (DP, DN) using a multicore cable.
Does the power supply voltage of the 24VDC external power
supply satisfy the specifications? Adjust the power supply voltage of the 24VDC external power supply within the rated value
(21.6 to 27.6VDC). (The recommended voltage is 26.4VDC.)
Are two or more NZ2AW1GNAL and AnyWireASLINK master
modules connected within one AnyWireASLINK line? Connect only one NZ2AW1GNAL or AnyWireASLINK master module within one
AnyWireASLINK line.
Is the I/O information of the slave module stored in the following
remote I/O signals and remote registers?
• AnyWireASLINK bit input signal (RX20 to RX21F)
• AnyWireASLINK bit output signal (RY20 to RY21F)
• AnyWireASLINK word input signal (RWr20 to RWr21F)
• AnyWireASLINK word output signal (RWw20 to RWw21F)
• Check that the remote I/O signals and remote registers listed on the left are correctly
assigned in the refresh settings of the AnyWireASLINK master module.
• Check that information regarding the slave module has been properly assigned and that
the instructions written in the program are free from mistakes.
Check item Action
Is the easy replacement setting for one slave module enabled? Enable the easy replacement setting for one module in the "Parameter of Slave Station"
window of the CC-Link IE TSN configuration window. (

Page 74 Easy Replacement
Function for One Slave Module)
Does a DP/DN disconnection error exist on only one slave
module? Disconnect the slave module to be replaced from the transmission cable, and replace it
using the easy replacement for one slave module function.
To replace two or more slave modules, turn off the power after replacing the first module,
disconnect the second slave module, and replace it using the easy replacement setting for
one slave module.
Are the old and new slave modules of the same type? Replace the slave module with a new one of the same type.
Is the new slave module the same as the old slave module, or
does new one have an updated device version? Replace the slave module with a new one of the same type or with an updated device
version.
Is the new slave module connected firmly? Connect the new slave module firmly to the transmission cable.
Does the new slave module support easy replacement function
for one slave module? Replace the slave module with a new one supporting easy replacement function for one
slave module.
For details on whether a slave module supports easy replacement of one slave module,
refer to the manual for each slave module used.
Do any errors other than DP/DN disconnection errors exist? Eliminate errors other than DP/DN disconnection errors, and replace the slave module
using the easy replacement for one slave module function.