1
MODBUS / Modbus RTU on TWR-K20D72M
« on: January 26, 2018, 05:17:03 PM »
Hi Mark,
somewhere on nxp.com you wrote, that the uTasker MODBUS module runs together with the NXP tower board TWR-K20D72M. This makes me hope, that you´ve already tried it with this hardware. It´s also supported in the code. How do you connect this board to RS485. I can´t get any connection to the board using TWR-SER or TWR-IND-IO serial modules. Maybe the reason for this could be, that the only UART with flow control between the boards is UART1 and this one is also used by the onboard OSBDM debugging circuit on the main board. Have you ever tried this combination with Modbus RTU?
If yes, maybe you can help me with my setup?!
Best regards Felix
somewhere on nxp.com you wrote, that the uTasker MODBUS module runs together with the NXP tower board TWR-K20D72M. This makes me hope, that you´ve already tried it with this hardware. It´s also supported in the code. How do you connect this board to RS485. I can´t get any connection to the board using TWR-SER or TWR-IND-IO serial modules. Maybe the reason for this could be, that the only UART with flow control between the boards is UART1 and this one is also used by the onboard OSBDM debugging circuit on the main board. Have you ever tried this combination with Modbus RTU?
If yes, maybe you can help me with my setup?!
Best regards Felix