LOGO! 8 FS4 & S7-1200 (FW4.1)

Hi there, 

I have a program earlier written in LOGO! Soft Comfort 8.0 which have been downloaded into LOGO!8 (not FS 4) & the TIA program/configuration downloaded into S7-1200 CPU (FW 4.1). I had no problem with both. All was working fine. But now i have LOGO! 8 FS4 & S7-1200 CPU (FW 4.1). where i managed to rewrite the program in LOGO! Soft Comfort 8.1 where i managed to download the new program & configurations into the LOGO! 8 FS 4. However i noticed that when i tried to monitor one of the bit from LOGO (e.g: M57) at TIA portal's Data block (i am not able to see the changes to this bit live) meaning the bit is not changing from true to false every 1 second. Previously i had no problems with the older LOGO! 8 hardware. Have any one encountered this with the new LOGO! 8 FS 4 hardware?

Hi, I have similar problem with new LOGO!8 FS4.

I use LOGO with HMI KTP700 in several machines. Now I need to use 2 months old program in new LOGO and its impossible, because of 2 problems:

1. even I use LSC 8.1 and change HW type to FS4, online test doesnt work properly - it shows right state of every I/Q, but then it freeze - shows no change and shows no timer value.

2. doesnt work Network imput from HMI

With "old" LOGO!8 everything works right..

But when I tried to do new program in TIA portal and LOGO soft and tried Network I/Q and online test, that worked right.

Just dont understand..

Hello

i have the same problem here

i replaced a logo8 FW3 with a logo8 FW4, and now i cant seem to visualise the data from the logo.

when i change back to the  FW3 logo it works fine.

is ther someone from siemens who can explane this problem ?

regards

Bart Hoevenaars

New question published by Messian is split to a separate thread with the subject LOGO! 8 FS4 & S7-1200: Communication doesn't work..

Best regards
Jen_Moderator