1756-L61 PLC Firmware upgrade issue

Alsawafi

Member
A
Join Date
Jul 2021
Location
Muscat
Posts
1
Hi,

we are using 1756-L61 PLC redundant system in one location . due to some minor faults , we upgrade the firmware from 19.52 to 20.58. after upgrade, the system work only locally thorough local HMI. if we want to change the system to be operate remotely thorough SCADA, all data will froze.

please advise.
 
it sounds like you have a network issue or maybe a problem with a configuration. what do you mean by "froze"?

have you made any other changes besides the CPU firmware pgrade?
 

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