Kipp & Zonen RaZON+, Instruction Manual

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ASCII Serial Communication Protocol Description
Introduction
This appendix describes the serial communication protocol between the RaZON
+
and the HOST.
• The RaZON
+
is referred to as the instrument.
• Data provided by the instrument is collected and processed by the HOST.
• The HOST can be either: a personal computer, an intelligent controller directly connected to the instrument, or a remote server
connected to a network.
The serial communication is based on client-server architecture. The instrument is the server, providing the information. The HOST
is the client, sending commands to or receiving data from the instrument.
The instrument will regularly send status messages to the host, so the host is kept up to date regarding the current status of the
instrument. The interval of the status messages is 1 second.
The communication protocol has two main roles:
1. Sending recovery commands to the instrument.
2. Transmission of the instrument’s data (status info) to the HOST.
Firmware release
This document is valid for the RaZON
+
firmware release 2.06 and up. In case a higher firmware release supports a changed version of
the serial protocol, a new version of this document will describe the new protocol and state the differences.
Instrument hardware configuration
The instrument is equipped with an isolated configurable 2- or 4-wire RS-485 serial interface.
The protocol layer
Communication parameters
Default communication parameters
The default communication parameters are:
Baud rate : 19200 bps
Parity
: none
Data bits : 8
Stop bits : 1
Flow control : none
Miscellaneous
Command, request and response lines are terminated by a linefeed <LF>. Carriage returns <CR> are discarded in commands
and requests.
Note