Hi.. 

I'm trying to synchronize both the PLC 's of  6Es7414 4HM14 0AB0. When i download the program to main plc,it is working. But it is not getting synchronize with standby plc. it was working fine for last 4 months.

please help me out. 

thanks in advance.

Regards,

Balaji R

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Split from GSD FILE FOR CPU414-4H (6ES7414-4HM14-0AB0) V4.5.1.

Hello Jayesh,

Can you connect your PG and read the diagnostic buffer of both CPUs?

What is the LED pattern of both CPUs?

Best regards,

H-H

Hi,

please have a look at your sync modules. Are all 4 green LED on?

Are the sync cables connected properly?

Regards
Myst