M
Hi there
I'm working on a project involving ModBus RTU on rs-485 on the vdx-6354 single board by ICOP. It provides a 3-pin rs-485 connector and the possibility to commute one of the COM rs-232 ports to a rs-485 one.
The OS installed is Ubuntu 8.04 with a kernel including all the drivers for the on board hardware; the slave device tested was a Seneca net-analizer.
The problem is that I always get a "connection timeout" error, no matter what port I connect the device to, what baud rate I set, what slave ID I set, what modbus library I use.
The /dev/ttyS* devices are created and recognized as they should be.
Could you help me on this subject?
Thanks in advance!
I'm working on a project involving ModBus RTU on rs-485 on the vdx-6354 single board by ICOP. It provides a 3-pin rs-485 connector and the possibility to commute one of the COM rs-232 ports to a rs-485 one.
The OS installed is Ubuntu 8.04 with a kernel including all the drivers for the on board hardware; the slave device tested was a Seneca net-analizer.
The problem is that I always get a "connection timeout" error, no matter what port I connect the device to, what baud rate I set, what slave ID I set, what modbus library I use.
The /dev/ttyS* devices are created and recognized as they should be.
Could you help me on this subject?
Thanks in advance!