Modbus is totally new to me. So it would be greatly appreciated if could you help me. In my product I am using 8 bit micro controller, which is collect the data from field in every 5ms once. Already we have implement modbus communication to External Device with RS 485 communication.

But my problem is how i can communicate with my module to MODSCAN32 software. I was trying this but i am getting invalid slave response.

kindly advice me as soon as possible.

Regards,
V.Dominic Antony Vinoth.

 

Hello,

Can you record the raw modbus frames (using Modscan)?

Regards,
Andrzej
www.modbus.pl

 

Thanks for your reply.
////////////////////////////////////////////////
(QUERY FROM modscan32 TO my Device).
/////////////////////////////////////////
SLAVE ADDRESS: 0X01
FUNCTION CODE: 0X02
START ADDhigh and Low)=0x00,0x00.
TOTAL LENGTH high and Low): 0x00, 0x30.
CRChigh and Low)
//////////////////////////////////////////////////
RESPONSE FROM my Device TO modscan32:
/////////////////////////////////////////////////
SLAVE ADDRESS: 0X01
FUNCTION CODE: 0X02
TOTAL byte LENGTH: 0X06
Data Byte :6 byte
CRChigh and Low) .

My problem is if when i connect option in modscan software i was getting invalid slave response. kindly help us to sort out this issue.