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ESIGN PRECAUTIONS]
!
DANGER
If a communication error occurs in the network, the error station (MELSEC-ST system) shows
the following behavior.All outputs turn OFF. (In the MELSEC-ST system, the output status at
the time of error can be set to clear/hold/preset by using user parameters of each slice module.
As “clear” is set by default, the outputs turn OFF when an error occurs. In the case where the
system operates safely with the output set to “hold” or “preset”, change the parameter
settings.)Create in the program an interlock circuit that will ensure the system operates safely
based on the communication status information.Failure to do so may cause an accident due to
mis-output or malfunction.

Create an external fail safe circuit that will ensure the MELSEC-ST system operates safely,
even when the external power supply or the system fails.
Accident may occur due to output error or malfunctioning.
(1) The status of output changes depending on the setting of various functions that control the
output. Take sufficient caution when setting for those functions.
(2) Normal output may not be obtained due to malfunctions of output elements or the internal
circuits.Configure a circuit to monitor signals which may lead to a serious
CF卡 GT05-MEM-256MC
閃存卡 QD81MEM-1GBC
Q系列編程器SRAM卡用電池 Q3MEM-BAT
Q系列編程器ATA卡 Q2MEM-16MBA
CF卡 GT05-MEM-8GC
Q系列PLC存儲卡用適配器 Q2MEM-ADP
Q系列PLC內存卡 Q2MEM-1MBS
CF卡 GT05-MEM-128MC
模塊 AJ71ME81
可選功能板 GT16-MESB
閃存卡 QD81MEM-8GBC
存儲卡 Q1MEM-64S
Q系列PLC存儲卡 Q3MEM-4MBS-SET
Q系列編程器ATA卡 Q2MEM-8MBA
CF卡 GT05-MEM-4GC
Q系列PLC線性快閃存儲卡 Q2MEM-4MBF
閃存卡 QD81MEM-2GBC
CF卡 GT05-MEM-2GC
閃存卡 QD81MEM-512MBC
閃存卡 QD81MEM-4GBC
Q系列編程器ATA卡 Q2MEM-32MBA
Q系列PLC內存卡 Q2MEM-2MBS
Q系列編程器SRAM卡用電池 Q2MEM-BAT
CF卡 GT05-MEM-512MC
存儲卡適配器 GT05-MEM-ADPC
Q系列PLC內存卡 Q3MEM-4MBS
MES接口模塊附件 GT05-MEM-256MC
可選功能板 GT15-MESB48M
CF卡 GT05-MEM-16GC
CF卡 GT05-MEM-1GC