AC800F , Modbus TCP communication with third party software with serial to TCP converter
How can i comminicate with third party software (e.g. ModbusPoll) with Modbus TCP?
I m using Inhand Modbus Serial to TCP converter. And AC800F will be slave for third party. I used slave write/read block and i added adresses, interface and registers in modbus slave block in Freelance and cabling TB870 (20/21) to Inhand Router (RX/TX)
After this i configured ModbusPoll but i experienced 'Slave Device Busy' error and i dont comm with ModbusPoll.
Do you have advice for this issue? Have you ever tried this with same equipment and sw? Can you explain me pin and sw config?
Which Freelance version you are using ? In Freelance 2013 SP1 AC 800F supports modbus tcp. in that case you need not have to use any converter and TB in between.
using that straight forward you can carry out communication over tcp\ip over ethernet network.
I have never used Modbus poll, but based on text in description I can imagine your current setup and there are lots of possibilities of not getting communication up, but check at freelance are you getting any error at hwtree at lower pen while selecting modbus serial interface ?
Also for slave interface block you can use MODS_VIEW block and check if you have any error or STA code ?
Hope that helps...