User manual FLUKE MFC-CB

[. . . ] MFC-CBTM MFC Control Box Operation and Maintenance Manual ©2001~2007 DH Instruments, a Fluke Company MFC-CBTM Operation and Maintenance Manual © 2001~2007 DH Instruments, a Fluke Company All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments, a Fluke Company 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA. DH Instruments strives to ensure the accuracy of its published materials; however, no warranty, expressed or implied, is provided. DH Instruments disclaims any responsibility or liability for any direct or indirect damages resulting from the use of the information in this manual or products described in it. [. . . ] The ID can also be set remotely from a computer which is more convenient than entering characters one at a time from the keypad (see Section 4. 3. 5. 2, "ID(=)" command). The ID cannot be cleared or reset by any RESET function (see Section 3. 4. 1). ©2001~2007 DH Instruments, a Fluke Company Page 44 3. OPERATION 3. 4. 4 <4CAL> PURPOSE To view and edit MFC-CB electrical signal calibration coefficients and calibration date. The MFC-CB CALIBRATION function is considered part of MFC-CB maintenance and is therefore covered in the Maintenance, Adjustments and Calibration Section of this manual (see Section 5). 3. 4. 5 <5REMOTE> PURPOSE To configure the MFC-CB COM1, COM2 and IEEE-488 communication ports. PRINCIPLE The MFC-CB has two RS232 communications ports referred to as COM1 and COM2 and a single IEEE-488 port. COM1 and the IEEE-488 port are for communicating with a host computer (see Section 3. 4. 5). COM2 is reserved for communicating with an external device (e. g. , a multimeter, molbox, second MFC-CB, etc. ). All the communication ports can be set up from the MFC-CB front panel. The self-test allows verification that the MFC-CB RS232 ports (COM1 and COM2) are operating properly and that a valid interface cable is being used. In each step, MFC-CB checks the message received at the receiving COM port. If the receiving COM port times out or receives an incorrect message, that step of the test fails. OPERATION To access the port configurations, press [SPECIAL], <5remote>. Select <1COM1>, <2COM2>, or <3IEEE-488> to view and/or edit that port's settings. Press [SPECIAL], <5remote>, <4RS232test> to access the RS232 self-test. Page 45 ©2001~2007 DH Instruments, a Fluke Company MFC-CBTM Operation and Maintenance Manual 3. 4. 5. 1 <1COM1> AND <2COM2> The COMx ports can be set for the specific settings required by the user. COM1 and COM2 Available Settings BAUD RATE PARITY DATA BITS STOP BITS 300, 600, 1 200, 2 400, 4 800, 9 600, 19 200 NONE, ODD or EVEN 7 or 8 1 or 2 The default COMx settings are 2400, E, 7, 1 for both COM ports. The MFC-CB appends a carriage return (<CR>) and a line feed (<LF>) to all messages that are sent out of the COM1 port to the host. It looks for a carriage return to terminate incoming messages and ignores line feeds. The user MUST wait for a reply to each message sent to the MFC-CB before sending another message to it (see Section 4). 3. 4. 5. 2 <3IEEE-488> The IEEE-488 port address can be defined from 1 to 31. The MFC-CB sends a line feed (<LF>) and asserts the EOI line at the end of all transmitted messages. It looks for a line feed and/or assertion of the EOI line to terminate incoming messages (see Section 4). 3. 4. 5. 3 <4RS232 SELF-TEST> The RS232 self-test is provided to check the MFC-CB COM ports and the interface cable independently of an external device or computer. If you are having difficulty communicating with MFC-CB from a host computer using RS232, the RS232 self test can help establish that the MFC-CB COM1 port you are trying to communicate with and the interface cable you are using are good. To run a self test of the RS232 ports (COM1 and COM2), press [SPECIAL], <5remote>, <4RS232test>. [. . . ] The full scale value is the maximum value or the span of a measurement range. A factor representing the relationship between the process gas and a surrogate gas for an MFC pr MFM. A value by which a setpoint or measurement is multiplied to change the slope of the set points or readings. Acronym for mass flow controller, a device that sets flows in response to electrical set points. [. . . ]