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Summary of Contents for Dolomite Mitos
- Page 1 MITOS P-Pump PROGRAMMING INSTRUCTIONS...
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Page 2: Table Of Contents
The Dolomite Centre Ltd. Contents Summary Introduction Safety RS232 protocol Controlling the pump General 5.1.1 IDLE (State: 0) 5.1.2 CONTROL (State: 1) 5.1.3 TARE (State: 2) 5.1.4 ERROR (State: 3) 5.1.5 LEAKTEST (State: 4) Control strategy Command/Response syntax Response syntax... -
Page 3: Summary
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. -
Page 4: Controlling The Pump
• If the new COM port cannot find a driver, force it to install the standard FTDI serial port driver version 2.8.14 or later. This is available from Dolomite Support. The RS232 protocol settings for the pump are: 57600 baud, 8 data bits, 1 stop bit, no parity, no handshaking. -
Page 5: Tare (State: 2)
The Dolomite Centre Ltd. Issuing another control pressure command sets a new target but the pump stays in the CONTROL state. If your application issues a control pressure command when the pump is in any other state, the command will be rejected and the pump will continue its current operation. - Page 6 The Dolomite Centre Ltd. 2. A first in first out (FIFO) command queue 3. A “Response Pending” counter/flag 4. An interrupt driven response procedure An interrupt based timer function is used to continually send “s” commands to the pump every second.
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Page 7: Command/Response Syntax
The Dolomite Centre Ltd. • Parse the actual response. o For “s” commands, parse out all the pump data and present to your application GUI for display, logging etc. See section 6.3 for details. o OK acknowledgments of other commands probably require no further action. - Page 8 The Dolomite Centre Ltd. Command Description Pump State Control Mode (before after) (before after) Response “#A0” If pump does not receive any command, e.g. a status query "s", for 30 seconds it will automatically return to manual mode. Your application sends this to move the pump ERROR out of ERROR state and back into IDLE.
- Page 9 The Dolomite Centre Ltd. Command Description Pump State Control Mode (before after) (before after) “F2000” sets flow rate to 2000 pl/s. Replies "#F0" and starts flow control if in remote control IDLE (Not mode (see A1). For this command to work there...
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Page 10: Status Command Response
The Dolomite Centre Ltd. Command Description Pump State Control Mode (before after) (before after) 0x979C is 0x8000 (fail flag bit) plus 0x179C = 6044mbar. Get flow sensor type and fluid name for fluid calibration from connected flow sensor. (Not available Replies with “#bx,ssss”... -
Page 11: Error Codes
The Dolomite Centre Ltd. Field Description Current flow rate in pl/s. Requires a connected Mitos Sensor Display flow meter. Note the actual accuracy is given by flow sensor type below. Contact Dolomite Support for more information on this feature. Target flow rate in pl/s. Requires a connected Mitos Sensor Display flow meter. Contact Dolomite Support for more information on this feature. - Page 12 The Dolomite Centre Ltd. The ERROR state must be explicitly cleared by sending the “C” command and subsequently confirming the state with “s”. Below is a diagram showing where the pressure target errors come into force for systems with positive and negative supply pressures.
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Page 13: Programming Example
The Dolomite Centre Ltd. seen above, so when converting these values for display you need to convert the units from pl/s to the units for the flow sensor in the table above and then pay attention to the number of decimal places it supports. -
Page 14: Further Information
The Dolomite Centre Ltd. 9 Further Information For more information about Dolomite and our range of other microfluidic products, please visit: http://www.dolomite-microfluidics.com/ Contact us at: Tel: +44 (0)1763 242491 (Rest of World) Tel: 617 803 6655 (USA) Fax: +44 (0)1763 246125 Email: sales@dolomite-microfluidics.com... - Page 15 The Dolomite Centre Ltd. 3600051 - P-Pump API - programming instructions - v 1.3 Page 15 of 15...
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