Dear Experts 

I am facing issue in modbus communication of  CP341 with Thermofisher Beltweigher.

i am having 3 nos of module connected to CP341.

out of these 2 modules of sensors and 1 modules of beltweigher

 2 modules of sensors are communicating fine on modbus.

but only this thermofisher module is not communicating on modbus.

I have checked the logic and it is working fine.

I am confused regarding the register address and offset given in the manual.

kindly help regarding this.

also if anyone has done modbus communication with thermoscientific beltweigher modules kindly provide reference logic for the same.

Device Details:

CP341(6ES7341-1CH02-0AE0) Modbus Master

Ramsey Micro-Tech  MT9101F Modbus Slave

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Split from Modbus General Description.

Hello,

probably better check manual (Ext. link, page 242,266 are perfect for understanding):

Microtech Reference Manual

With examples you can better understand how that addresses need to be set due request.

Dear Sir I have taken following trials.

1.Prepared DB with REAL data type

 sending 2 queries query1 read 10 registers starting from 128

                               query2 read 10 registers starting from 138 

here I was not receiving any values in DB. In this case both Tx and Rx was blinking properly.

2. Prepared DB with first with integer data type and then word data type.

sending 2 queries query1 read 10 registers starting from 128

query2 read 10 registers starting from 138

in both cases some values were coming in span calculation register but not in master total batch total.

In this case both Tx and Rx was blinking properly.

Dear Sir,

My problem was resolved..

1.By taking receive DB data type WORD for each register.

2.If I need to read 10reg form reg no 138 I was taking reg 138 in send query.but actually I need to take 137.. I missed this simple point..

Thank you very much for support.