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en:software:devices:modbus [2016/12/20 18:11] – [5. Descrizione funzionamento come master] qem103 | en:software:devices:modbus [2016/12/21 14:38] – [1. Introduction] qem103 | ||
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The MODBUS< | The MODBUS< | ||
- | The MODBUS device lets you choose which serial port use for connection. The characteristics | + | The MODBUS device lets you choose which serial port use for connection. The features s of data transmission (number of device, baud rate, parity, stop bits) and the transmission mode must be selected on each station and cannot be changed during the operation.\\ |
With using a serial line, there are two modes of transmission used in the Modbus Protocol. Both ways allow the same communication skills. The mode is selected by the master and must be unique for all devices connected to the network. The modes are: | With using a serial line, there are two modes of transmission used in the Modbus Protocol. Both ways allow the same communication skills. The mode is selected by the master and must be unique for all devices connected to the network. The modes are: | ||
* ASCII (American Standard Code for Information Interchange) | * ASCII (American Standard Code for Information Interchange) |