sid Posted September 11, 2006 Report Posted September 11, 2006 I am having Fx1N PLC and 5 analog cards each having 8 channels. Analog card supports Modbus protocol. So i want to connect these 5 analog cards to my FX1N in multidrop slaves but Fx1N doesnot support Modbus. Is it possible to connect using fx1N 485BD card? Quote
FNMdeJong Posted September 11, 2006 Report Posted September 11, 2006 Yes it is possible, you only have to write your own driver for Modbus protocoll over the RS485 BD board. Quote
mjrx Posted September 11, 2006 Report Posted September 11, 2006 I too have had occasions where I needed to talk Modbus over the FX PLC. I considered writing my own driver, but I don't want to re-invent the wheel here, as I am sure someone has done this before. Anyone know of a reliable Modbus driver out there? Thanks. Quote
Gambit Posted September 21, 2006 Report Posted September 21, 2006 (edited) If you use GX IEC Developer there is a FB library called ModbMFX. You can download it for free from www.mitsubishi-automation.com. It contains all the info on how to use the modbus protocol over RS485BD Edited September 21, 2006 by Gambit Quote
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