connections
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connections [2018/07/27 20:25] – [Basic Info Tab] akuzmuk | connections [2018/07/27 20:33] – akuzmuk | ||
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- | ====== Connections ===== | + | ====== Connections |
The connection determines which communication driver and what parameters WebHMI will use to exchange data with the equipment. The list of the connection settings their meaning is given here. | The connection determines which communication driver and what parameters WebHMI will use to exchange data with the equipment. The list of the connection settings their meaning is given here. | ||
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{{ : | {{ : | ||
- | ==== Basic Info Tab ==== | + | ===== Basic Info Tab ===== |
After selecting a connection to edit, the page with **Basic info** tab is opened: | After selecting a connection to edit, the page with **Basic info** tab is opened: | ||
{{ : | {{ : | ||
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Please refer to specific communication protocols documentation and WebHMI application examples for more info. | Please refer to specific communication protocols documentation and WebHMI application examples for more info. | ||
- | ==== Communication tab ==== | + | ===== Communication tab ===== |
- | Communication tab settings differ a bit for connections based on serial bus and TCP/IP network. Some settings are common to both of them. | + | **Communication tab** settings differ a bit for connections based on serial bus and TCP/IP network. Some settings are common to both of them. |
- | === TCP networks === | + | ==== TCP networks |
- | {{:: | + | {{ : |
***Timeout**, | ***Timeout**, | ||
***Read errors to skip scan** - System will stop trying to read connection if there will be more than X errors in requesting registers. | ***Read errors to skip scan** - System will stop trying to read connection if there will be more than X errors in requesting registers. | ||
- | ***Allow group read operations** checkbox - Allows using group read operations for Modbus protocols. Below is the max. Number | + | ***Allow group read operations** checkbox - Allows using group read operations for Modbus protocols. Below is the max number |
- | ***Max.register in group** - is the maximal | + | ***Max register in group** - the maximum |
- | ***Disable reads when errors occur** checkbox | + | ***Disable reads when errors occur** checkbox - temporarily disables the problematic |
***Scans with errors count** - errorneous scan counter, reaching this counter if the first conditions to temporarily switch off the connection | ***Scans with errors count** - errorneous scan counter, reaching this counter if the first conditions to temporarily switch off the connection | ||
***Registers with error count** - errorneous register read counter, reaching this counter if the second condition to temporarily switch off the connection | ***Registers with error count** - errorneous register read counter, reaching this counter if the second condition to temporarily switch off the connection | ||
***Disable time interval, minutes** - timeout to enable communication again after having been disabled | ***Disable time interval, minutes** - timeout to enable communication again after having been disabled | ||
- | === Serial networks === | + | ==== Serial networks |
Below only the settings unique for serial bus are explained. Please refer to previous section. | Below only the settings unique for serial bus are explained. Please refer to previous section. | ||
- | {{:: | + | {{ : |
-**(1)** - these are standard serial port settings | -**(1)** - these are standard serial port settings | ||
- | -**Stabilization pause**,ms - Pause to stabilize the RS-485 bus before initiating an exchange for this connection. (Sometimes it may be necessary | + | -**Stabilization pause**,ms - Pause to stabilize the RS-485 bus before initiating an exchange for this connection. (Sometimes it may be necessary when operating at a high speed or on an inconsistent line, with a specific device - the end of the transmission with the previous device causes a transient process that can interfere with the line for the next device) |
- | -**Mode** - //Normal// mode is when WebHMI polls the device. //Virtual UART// mode is when WebHMI activates special driver to enable external access to that serial port via TCP socket. Please refer for more details to Virtual COM port function page | + | -**Mode** - //Normal// mode is when WebHMI polls the device. //Virtual UART// mode is when WebHMI activates special driver to enable external access to that serial port via TCP socket. Please refer for more details to [[Virtual COM port]] function page. |
connections.txt · Last modified: 2024/02/02 08:48 by emozolyak