Dolomite Mitos Manuel d'instructions de programmation - Page 3
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1 Summary
This document contains details of how to interface Mitos P-Pumps version 2 and 3 (serial
numbers 160200 or greater) with a PC from your own application software. You can use any
programming language that can directly use a standard PC serial ("COM") port on any version of
Windows. Other operating systems that have FTDI drivers for virtual COM ports should also work
– Linux, Mac OS and Android – though Dolomite does not directly support these. For support for
P-Pumps earlier than 160200, please contact Dolomite Support – a similar but slightly less capable
API exists.
2 Introduction
This pump uses an embedded computer and a microcontroller to control all functions of the
display and pump. All communications takes place via RS232 using a simple ASCII protocol.
Communications are always one of:
•
Set a control mode
•
Read some value(s) from the pump
•
Write a value to the pump
3 Safety
It is responsibility of the user to ensure that all pressure equipment used with the Mitos P-Pump
complies with all relevant directives and guidelines. Always use suitable personal protective
equipment – e.g. safety glasses and shields etc. – when dealing with pressurised gases.
4 RS232 protocol
The standard interface to the P-Pump is USB. However, it is simple and convenient for the user
API to make the USB port expose a "virtual" COM port and this documentation assumes this. If
you need to use the device via raw USB please contact Dolomite Support.
To make the USB port appear as a COM port under Windows proceed as follows:
•
Connect the P-Pump to your PC with a standard USB cable and install all requested USB
drivers.
•
Open Device Manager (you may need administrator rights to do this).
•
Find the entry for the P-Pump under Universal Serial Bus controllers
•
Double click the
entry for the
Dolomite P-Pump
and, on the
Advanced tab,
check the "Load
VCP" checkbox
and click OK.
•
Disconnect and
reconnect the
USB lead and Windows should now show a
new COM port listed under "Ports (COM & LPT)" – note the port number.
3600051 - P-Pump API - programming instructions - v 1.3
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