I have some question about RS 485. As I said in title, what if I connect many slaves in one master, who assign slave address?
Modbus master doesn't have any functions to assign slave address. The only thing it supplies is to input command in binary code. Master just executes the command...
I'm trying to read data from a device.
Protocol is modbus TCP and I connected it to Ethernet. It supports SCADA TCP interface.
I'm using modpoll master simulator from my computer. But I get a response "Can't reach server/slave! Check TCP/IP and firewall settings" again.
Response is below...