Mitsubishi Electric MELSEC iQ-F FX55-ASL-M, User Manual

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4 FUNCTION
4.13 Slave Module Parameter Read/Write
39
4
Precautions
■
Parameter setting
Parameters cannot be set in the following cases.
• When an error occurs in the AnyWireASLINK system (Example: Short circuit, 24 V DC external power supply voltage drop)
• Within approximately five seconds after the AnyWireASLINK system is powered on or CPU module is reset
• When automatic address detection is in progress (While 'Automatic address detection flag' (Un\G28 b11) is on)
• When the same address used check is in progress (While 'Overlap address inspection flag' (Un\G28 b12) is on)
• When the parameter access is in progress (While 'Parameter access request command for the slave module' (Un\G27 b8),
'Parameter batch read command for the slave module' (Un\G27 b9), or 'Parameter batch write command for the slave
module' (Un\G27 b10) is on.)
• When any of the following errors has occurred
■
Parameter reading and writing
• Since all the parameters of the target slave module are updated at the time of writing parameters, all the parameters,
including the parameters of the changed part, must be set correctly. Make sure to read parameters immediately before
writing parameters to store the latest contents of the parameters. After storing the necessary parameter values, write
parameters. If writing parameters is executed without reading parameters, it may cause malfunction.
• When parameter read or write is in progress, 'Parameter access completion flag' (Un\G28 b9) turns off. Refer to the section
describing the parameter access timing, and adjust the access timing. (

Page 38 Parameter access timing)
• When parameter read or write is in progress, do not execute re-access to the parameters and automatic address detection.
Doing so can cause a malfunction of the module.
■ Parameter access, parameter batch read, and parameter batch write
• These operations cannot be performed to a slave module whose ID has not been registered in the FX5-ASL-M.
• Remove a same ID used error or a no ID setting error of the slave module. Then perform the operations.
■
Others
• When the automatic address detection is executed, the parameter batch read is executed simultaneously.
• Note that the FX5-ASL-M may communicate with a slave module and output parameters even if no parameters are set.
Error code Error description
0CC8H Transmission cable voltage drop error
0CC9H DP/DN short error
0CCBH 24V/DP short error
1867H FX5-ASL-M hardware failure
3064H
3065H
3066H