Storing device values after reset

[Scotttin]

Hi all.

I've set up the analog modules and I've set devices within the HMI to move the value of d to the special registers for process alarm limits but whenever the plc is reset I'm losing the value. Have I missed a storing trigger or something? 

[Ron_S]

Plc type?

You need to use the retentive memory area.

[MitsProgrammer]

Good morning

Just some thoughtful notes regarding this problem.

1. PLC will need a battery installed to be able to store the values.

2. You will need to assign registers to the Latch 2 area to be able to have values available after a reset. Latch 1 will keep the values for a power failure but will clear when doing a reset. Latch 2 will keep the value till its cleared or over written. All Mitsubishi PLC's except for the Alpha range and FX5UJ has the same latch functionality. To access and setup the latch settings you need to go to the CPU parameter settings in the navigation bar. 

[Scotttin]

Thanks