How to communicate with wp241 via modbus tia portal ?

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Split from Siwarex WP241 & s7-1200 & Modbus TCP.

hello sir and thank you for responding ,

my setup is wp241 - s7 1200 1214c CPU - and ktp 700 basic 

I had them laying around and I come across a project that has nothing to do with convayor ,

before I start I upgraded all of their firmwares ,I connected the siwatex directly to plc I did communicate with siwarex altho the weight freezes and won't show any change when I try to monitor the weight on HMI or try to do some simple math with plc  , on the other hand I can see the changes on siwatool 7 ,

I tried to use the wp241 standalone like wp231 that I want to stop first screw at a certain percentage of weight and change the limit the speed for second screw and at 100 percent of weight stop them all together but I couldn't get how to do it and did find any related option for it in communication interface digital output setup or in setting limit page , all I can see is limit belt speed or flowrate and belt load ,

all I need is two digital outputs and one input for zeroing the scale after each cycle,

or I get the weight without freezing on a digit so I can do some simple procedure,

so for last stand I'm trying to connect it to plc via rs485 to access the weight ,

I'd be so grateful if you could help me in any shape or form , thank you so much in advance thank you