Problem - can't add new ET-200U station to S5-135U/IM308B profibus network

Hello, experts!
I have a problem with extension of our factory's profibus system. Help me please to clarify why so happen?
Here is the Sinec - l2 system on the base of S5-135 PLC (only one master on bus) with 4 DP ET200U stations (slaves number 3,5,6,7), connected to interface module 6ES5 308 UB11 . It is working in good order (if need, I can put here the configuratgion diagram).
My task now is to put in operation a new DP-station (let it be ET-200U) in the profibus (Sinec L2-DP) network of main S5-135 PLC for the controling of the new valves.
For a first checking, I have assembled very simple station ET-200U that includes just interface module 6ES5 318-8MB11 , one-byte DI module 6ES5 421-8MA12 and one-byte DO module 6ES5 441-8MA11. I'm sure that all of them in good order (have checked). I connected this new station to the profibus connector between stations number 3 and 5. I 'm sure that profibus communication is in the good order, why i will explain later.
By software S5 COM ET 200 I have prepared EPROM module with configuration all of stations which already in operation (numbers 3,5,6,7) plus new station number 8 : input byte IB72 and output byte QB73 (I can send screenshotes of COM ET200 configuration file). But after that I shut down PLC, inserted EPROM card to IM 308B and start PLC, I couldn't see in the S5W (Step 5 for DOS also) that PLC receives the values from the inputs (all actual values of new station inputs in zero despite of voltage on them and lighting bit LEDs) of the new station number 8. But there are not Bus or Interface fault. After that I tried to assign logical one values to some of the new station outputs in PB of Step5 program, but when I downloaded PB with this new segment to PLC, it went to stop. Then I have tried to read the values of my new inputs by direct addressing (with out Process image PLC):
L PY72
T FY50
and so succeeded - I received values in the merker FY50 - like everything is all right...
But outputs not! Direct adressing like
L FY51
T PY73
also results in stop PLC :-(
After that just for checking I programmed in software COM ET-200 other EPROM-card with almost the same configuration, but with out station 7 (I have excluded it from this version of configuration) and set address of the input byte my new station 8 is IB68 (this byte was used before inside of station number 7 address space) - like station 8 here instead of station 7. And after that I insert this card to PLC, it receives good all of bits of byte 68 in all type of addressing and I could put values to the output QB69 with success . But physically i did not change the place of the new station 8. That means that Profibus-communication is in good order.

The problem looks like all available address space of PLC is expired?.. But there are used just 720 inputs and outputs of 1024!
Even so that how to resolve this problem, to add to the main PLC-rack new module I308 UB11 and to make new profibus branch or to do something else?
Thank all of you for advance!!

DB 1

I/O assignment

This contains a list of the digital inputs and outputs

(I/Os with relative byte addresses from 0 to 127), IPC

flag inputs and outputs for the S5-135U and the timer

field length.

DX 0

for the S5-135U

Defaults of certain system program functions for the

S5-135U, e.g. for processing the PLC start-up in

multiprocessor operation.

So, therearein the DX0 only few parameters and i can't add to it information relating to I/Oallocation.
All information about I/O allocation is stored in the EPROM card and in the DB1 (but how I know DB1 has influence only in the multiprocessing, butin my system only 1 CPU).
Dear experts, I have attached thescreenshot of IStack CPU, maybe that can answer on my problem? PLC went to stopafter I downloaded to PLCPB with operation of assigning value to output of my new ET200U:
T PY75 (QB75 in module6ES5 441-8MA11 that i have written in the EPROM card)
Thanks

Yes of course, Fritz, I added I/O bytes of new and old stations to DB1. But in the previous message was written that I have to add something concerning I/O addressing to DX0...
After that I have put to EPROM and DB1 thenew station addresses, then I try toassingvalues to newaddresses:
T PY[new output byte]
and in this moment PLS goes to stop. sometimes after that when PLC in stop, relativeLED on the output module begins to light... :-/

But if i'm usingold EPROM card (without of new station)and write the same code, PLC dos not go to stop, but LEDs of course does not light.