ASCII Client/Server

• Supported device types and versions

• Communication line configuration

• Communication station configuration

• Station protocol parameters

• I/O tag configuration

• Changes and modifications

• Document revisions

Supported device types and versions

The ASCII Client/Server protocol is intended for parsing serial communication containing simple text-oriented data (data sentences) that conform to a template
StartMark Data1 Separator Data2 Separator .... DataN EndMark

Parameters StartMark, Separator and EndMark can be configured within the station address.

It is also possible to periodically send text-oriented data with an identical template. The StartMark, Separator and EndMark parameters for transmitting can be different from those for receiving.

Example of received data:

Sending<CR><LF>11.8<CR><LF>-17.519723239035<CR><LF>12.2<CR><LF>0.3312<CR><LF>1.465<CR><LF>0.01<CR><LF> 11.384611976362<CR><LF>

Setting individual parameters:

StartMark = ding<CR><LF>

Separator = <CR><LF>

EndMark = Sen

Note: this communication protocol is simpler than the Generic User Protocol and only offers simple value parsing. On the other hand, parsing does not need to be implemented in the ESL script, but is performed directly by the KOM process.

Communication line configuration

Category of communication line:

• Serial

• SerialOverUDP Device Redundant

Communication station configuration

• Communication protocol ASCII Client/Server.

• Data Input section

  • Receiving enabled - the protocol processes input data.

  • Startup - text sequence indicating the start of data (StartMark). The end of the sequence must be followed by data.

  • Value delimiter - text sequence separating individual values ​​(Separator).

  • End mark - text sequence indicating the end of data (EndMark).

• Data output section

  • Transmitting enabled - the protocol writes data with the period Data output period.

  • Startup - text sequence written at the beginning of the data (StartMark).

  • Value delimiter - text sequence separating individual recorded values ​​(Separator).

  • End mark - text sequence written at the end of the data (EndMark).

Note: StartMark, Separator and EndMark parameters can also contain special (control) characters in symbolic form, e.g. <CR> or <LF>. The following table lists the supported characters:

Table 1