![Serial protocol stx etx](https://kumkoniak.com/69.jpg)
![Serial protocol stx etx Serial protocol stx etx](https://www.yoctopuce.com/projects/yocto-serial/img/labview-example.png)
The tag number is a string made of three ASCII digits. For example, the tag 000 will occur when sending side application is restarted thus, the tag number that shall be used after tag 255 is 001, not 000. Tag number 000 is reserved for restart condition. The tag number K is reset to 000 whenever there is a restart condition at the message sending side. It shall acknowledge the current message, but will not repeat any action taken from the previous message. At the receiving side, if the new message that is received carries the same tag number as the last received message, it assumes the last acknowledgement message has been lost. If the expected acknowledgement message (ACK) is not received within 10 seconds, the message sent is considered lost, and sent once again with the same tag number. The message sending side time-supervises the handshake procedure. The same tag number is returned in the acknowledgement message. In addition, the specific token (Transaction) code and values are described in detail in the subsequent section of this document.Įach transmitted message starts with SOH (HEX 01) followed by tag number (K) and STX (HEX 02) and ends with ETX (HEX 03).Įvery message sent, will be responded by the receiving side with an acknowledgement message, where K is the tag number and 93 is the acknowledgement code.Īll messages are tagged with a tag number K.
![Serial protocol stx etx Serial protocol stx etx](http://www.terryjfield.com/wp-content/uploads/2014/06/IR_Circuits-e1403474126905.png)
This document describes the specific Message Exchange format between the MD Gateway and the FOS/PMS Host via TCP/IP Communication Protocol & V.24.
#Serial protocol stx etx serial#
MD Gateway - PMS/FOS Standard Interface Protocol MD Gateway - PMS/FOS Standard Interface ProtocolīCC-Calculation (ONLY used in the V.24 Serial Port)Ĭollision (ONLY used in the V.24 Serial Port)
![Serial protocol stx etx](https://kumkoniak.com/69.jpg)