Recomendations for a modbus library

Started by David Jones in comp.arch.embedded13 years ago 2 replies

I have just been presented with a little job. I need to make a converter between modbus protocol and a proprietry one. They are thinking of...

I have just been presented with a little job. I need to make a converter between modbus protocol and a proprietry one. They are thinking of using the xnut [1] unit. I would have to write the code to make this convert the proprietry protocol to modbus over RS485. Their protocol is significantly different to modbus. Xnut runs linux. The xnut library does not support modbus (I think)....


Ethernet base protocols on embedded

Started by Anonymous in comp.arch.embedded13 years ago 9 replies

Hi, I wanted to replace existing RS485 communication method to Ethernet base communication on my embedded device. Requirement is 1. To...

Hi, I wanted to replace existing RS485 communication method to Ethernet base communication on my embedded device. Requirement is 1. To communicate with our own similar devices. 2. Communicate with 3rd party devices on same standard protocol. 3. Want to use same Ethernet port for TCP/IP web connection. Which are the protocols normally used for inter embedded device communication on ...


Very low-cost Android-based touch panel for HMI

Started by pozz in comp.arch.embedded5 years ago 42 replies

I need a very low-cost (50USD for quantity) touch panel running Android OS. I'll use only the LCD, the touch panel and a serial interface...

I need a very low-cost (50USD for quantity) touch panel running Android OS. I'll use only the LCD, the touch panel and a serial interface (RS485). A USB device port (to make a connection with a PC) and/or USB host port (for connecting USB pen drives) would be nice. The size of LCD could be from 5 to 7". I don't need SD, Ethernet, WiFi, CAN, RTC, battery, Bluetooth and other nice th...