Siemens Sinumerik 3/S5 Eprom card(s)

[ason]

Hey i need to make small changes in the PLC program on a sinumerik 3 system,
The PLC 6ES5921-3WB14 have 2 eprom
slot 1 6FX1817-0AX15
slot 2 6FX1123-6AB00
First i was think that slot 1 handles the PLC program and slot 2 stuff for the NC like machine parameter, user parameter and tool data etc.
but now im not sure,
i was read out the eprom in slot 1 to the PG and there only was some FB, DB, and OB and non of PB
and when i go online i have alot more program blocks,
so now i wonder if it´s safe to take out the eprom from slot 2, thinking that a part of program is there (or some where else?)

i wanna be really sure that there is the PLC program in slot 2 before i take that out, don't wanna make cold restart on a old machine like this by a mistake (bean there done that before )

 

[ason]

Solved

Forgot to answer the question,

The PLC program is stored in both eprom card
and the NC data is stored bellow the PLC that we can see in the first picture.
so no worry to take out the eprom cards... this time