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SevenStar D08-8C Instruction Manual

Flow accumulator
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D08-8C、D08-8CM
Flow Accumulator
Instruction Manual
Version March，2020

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Summary of Contents for SevenStar D08-8C

  • Page 1 D08-8C、D08-8CM Flow Accumulator Instruction Manual Version March，2020...
  • Page 2 D08-8C/8CM Accumulators comes true. Zhao Di 03/15/2010 The program in D08-8C/8CM were modified to 2.01 make it more stable; The command of reading instantaneous flow set point value was added in D08-8C communication protocol. Please see Appendix...
  • Page 3 SEVENSTAR may not be responsible. If you require any additional information or assistant of Sevenstar D08 series Flow Readout Boxes. Please feel free to contact your local Sevenstar Sales Agent or Sevenstar Customer Service at: (8610)- 6436 2925.

  • Page 4: Table Of Contents

    CONTENTS D08-8C for mass flow controller D08-8CM for mass flow meter APPLICATIONS..........APPLICATIONS............. SPECIFICATIONS..........SPECIFICATIONS..........OPERATION PRINCIPLE........OPERATION PRINCIPLE........INSTALLATION & CONNECTION..... INSTALLATION & CONNECTION......Dimension............Dimension.............. Tapping Installation Dimension......Tapping Installation Dimension......Installation Mode..........Installation type............. view of Accumulator..........

  • Page 5: Applications

    D08-8C Flow Accumulator provides operating power supply, flow accumulating, instantaneous flow rate and cumulate flow rate digital display of MFC/MFM. General speaking, D08-8C Flow Accumulator is compatible with D07 series MFC & MFM, and it can also compatible with other MFCs.

  • Page 6: Operation Principle

    3. OPERATION PRINCIPLE D08-8C Accumulator is consisted of ±15V power supply, 5V power supply, modulus converter, instantaneous flow & cumulated flow displayer, 6 keys and communication part. The flow test voltage (0V~+5V) that came from MFC/MFM converts to digital signal after pass through A/D converter to operate and cumulate processing in SCU( Single Chip Micyoco ).

  • Page 7: Installation Mode

    4.2 Installation Tapping Dimensions: ( 67×67 )mm 4.3 Installation Mode: Standard Inlay Installation 4.4 Front panel view(Figure 2) and rear panel view(Figure 3) Figure2. Front panel view of D08-8C Figure3. Rear panel view of D08-8C 4.5 Seriel communication connection(Figure 4)
  • Page 8 Figure4. 9-pin Standard D-Sub socket When you use one Master(PC) communicated with one D08-8C Accumulator, we commend RS232 communication mode; When you use one Master(PC) communicated with many D08-8C Accumulators( the maximum is 16 ), we commend RS485 communication mode;...
  • Page 9 Figure 5. 15 pin Standard D-Sub connection with MFC It can be directly connected with MFC through D-Sub by cable. ~220V power connection is showed in figure 3. For the sake of safety GND must be connected. 5. OPERATION 5.1 Startup There is no power switch of Flow Accumulator, it could be operated after external alternating current connecting.
  • Page 10 1, and cumulate flow unit defaults to SCC. 5.3 Keys Definitions The D08-8C Accumulator is operated and configured by the six keys in the front panel, The keys’ meaning is shown below: “SET “Key This key is used to implementation functions under mentioned in 5.4, it has six submenus.
  • Page 11 5.4 The submenus The D08-8C has six submenus. All the submenus can be accessed and displayed easily: you can change from one submenu to another using the “＋/－” keys or return to the state of displaying instantaneous flow value at any time by pressing the “SET” key.
  • Page 12 This function of submenu is identical to submenu1, the range of address is 0~255. NOTICE When D08-8C accumulator communicate with PC, you should make sure that accumulator’s address is match to the protocol data’s address sent by Master(PC). If not, communication does not work.
  • Page 13 When MFC’s valve is in “ Purge ” state, the displayed reading will overflow and flash, indicating that the instantaneous flow measured value is far greater than the Full Scale value. Submenu6: CUMULATE FLOW RESET TO ZERO When the displayed reading is “6”, press the “OK key” once, the display will read “61”; Press the “OK key”...
  • Page 14 Press the “OK key” to save operation and return to submenu2, then depress the “SET key” exit; When you change the Full Scale, you should reset the cumulate flow value to zero, please following the steps shown below: Press the “SET key” once, “1” will appear on the display indicating submenu1 is entered; Press the “－...
  • Page 15 “AUTO key” making the MFC’s valve be changed to the “AUTO” state, and then the new setpoint value will take effect. D08-8C Flow Accumulator can also operate together with MFM, in this situation, the “Valve control” and Setpoint didn’t work, it just tests instantaneous flow and displays instantaneous flow and cumulate flow.
  • Page 16 -[-] percentage display(100.0),Chinese label. 100sccm -[S] List full scale(see table on right side) and other request. 200sccm 300sccm 500sccm 1slm 2slm 3slm 5slm 10slm 20slm 30slm 50slm 100slm 150slm 200slm 250slm 300slm APPENDIX 1 D08-8C COMMUNICATION PROTOCAL Page 12 of 34...
  • Page 17 1 ： Summary This protocol is applied to the communication between the Master(PC) and D08-8C Flow Accumulator. Data format: hexadecimal Baud rate: 9600 b/s Data bits: 8 bits Stop bits: 1 bit Check bits: none 2 ： DETAILED DATA FORMAT 2.1 Read flow accumulator’s current state...
  • Page 18 “0F” denotes blank; “0A” denotes “-” ; “1A” denotes “-.” ; Transferred sequence is from low digit to high digit; For example: (1)~(4)=00 10 09 0F denotes the instantaneous flow is “90.0”; (5)~(10) Cumulate flow value; The Data definitions are the same as that of instantaneous flow value; For example: (5)~(10)=05 13 04 02 0F 0F denotes the cumulate flow is “243.5”;...
  • Page 19 ←Answer message from the Slave device 01 03 04 (1) (2) (3) (4) CRCL CRCH which means: Address of the device, here 1; Reading command; Number of bytes read, here 4 bytes; (1)~(4) Instantaneous flow set point value; The data “00~09” denotes corresponding number “0~9” ; The data “10~19”...
  • Page 20 01 06 00 16 00 80 69 AE “Valve Control” 01 06 00 16 00 FF 28 4E “Valve PURGE” which means: Address of the device, here 1 Command, here writing 1 word; 00 16 Starting address; 00 00 Valve OFF; 00 80 Valve Control;...
  • Page 21 00 00 Decimal location 01 F4 Decimal location 50.0 02 EE Decimal location 75.0 03 E8 1000 Decimal location 100.0 1D 4C 7500 Decimal location 750.0 CRCL CRCH: CRC(calculated) ←Answer message from the Slave device The answer is identical to the request. 3 ：...
  • Page 22 C code for a CRC calculation: Page 18 of 35...
  • Page 23 CRC=0xFFFF; for(i=0;i<length(message)-1;i++) CRC=CRC^(message[i] & 0x00FF); for(j=0;j<8;j++) carry=CRC & 0x0001; CRC=CRC>>1; if(carry==0x0001)CRC=CRC^0xA001; Pascal Code for a CRC calculation: PROCEDURE CALCRC(var CRC:word; c:char); Var carry:word; I:byte BEGIN CRC := CRC XOR ( ord(c) AND $00FF ); For d := 0 To 7 Do Begin carry := CRC AND $0001 ;...
  • Page 24 Message := Message + chr( (CRC + 256) MOD (((CRC div 256)+1)*256))+ chr(CRC div 256); D08-8CM Flow Accumulator Operating Instruction 1. APPLICATION D08-8CM Flow Accumulator provides operating power supply, flow accumulating, instantaneous flow valve and cumulate flow rate digital display of MFM. General speaking, D08-8CM Flow Accumulator could operate together with D07 series MFM, and it can also operate together with other international models of MFM.

  • Page 25: D Connection

    2.9 Bypass Control 1 Way MFM ………………………………………………………………..………………………………………… 2.10 Dimension (72×72×168) mm ……………………………………………………………………..……………………………… 2.11 Weight 0.5 kg ……………………………………………………………………………..……………………………………………… 3. OPERATION PRINCIPLE D08-8CM Accumulator is consisted by ±15V power supply, 5V power supply, modulus converter, instantaneous flow & cumulated flow displayer, 4 keys and communication part. The flow test voltage (0V~+5V) that came from MFM converts to digital signal after pass through A/D converter to operate and cumulate processing in SCU( Single Chip Micyoco ).
  • Page 26 Figure1. Dimensions of D08-8C 4.2 Installation Tapping Dimensions: ( 67×67 )mm 4.3 Installation Mode: Standard Inlay Installation 4.4 Front panel view(Figure 2) and rear panel view(Figure 3) Figure2. Front panel view of D08-8CM Figure3. Rear panel view of D08-8CM 4.5 Seriel communication connection(Figure 4)
  • Page 27 Figure4. 9-pin Standard D-Sub socket When you use one Master(PC) communicated with one D08-8CM Accumulator, we commend RS232 communication mode; When you use one Master(PC) communicated with many D08-8CM Accumulators( the maximum is 16 ), we commend RS485 communication mode; When you select RS232 communication mode: Please connect pin 2(TXD) , pin 3(RXD) and pin 5(SG) showed in figure 4 to PC’s standard RS232 serial port’s corresponding pin 2(RXD),pin 3(TXD) and pin 5(Signal COM);...

  • Page 28: 220V Power Connection

    Figure 5. 15 pin Standard D-Sub connection with MFM It can be directly connected with MFC through D-Sub by cable. ~220V power connection is showed in figure 3 . For the sake of safety GND must be connected. 5. OPERATION 5.1 Startup There is no power switch of Flow Accumulator, it could be operated after external alternating current connecting.
  • Page 29 “SET” Key This key is used to implementation functions under mentioned in 5.4, it has four submenus. “OK” Key This key let users enter the menu and save the value they have set. “＋” Key This key can increase the value of Full Scale and Address, when you quickly press this Key one time, the value will goes up 1, when you press this key and continue several seconds, the value will goes up continuously.
  • Page 30 At fist the last digit of Full Scale value will flash, you can increase or diminish the last digit value by the “+ key” and “- key”, when the desired value is displayed, press the “OK key” and then the tens digit will flash allowing being updated in the same way.

  • Page 31: Shut Down

    5.5 SHUT DOWN Disconnected AC power, the accumulator will turn off. Cumulate flow value’s SAFEGUARD FUNCTION when power is off The Full Scale and Units will be saved at the time of power off, when the power on these values will not be changed. Specially, the cumulate flow value will be saved every 30 seconds, when the power on the cumulate flow matches to the last saved value.
  • Page 32 exit; 8. When you change the Full Scale, you should reset the cumulate flow value to zero, please following the steps shown below: Press the “SET key” once, “1” will appear on the display indicating submenu1 is entered; Press the “－ key” once to scroll the number, the display will read “4” indicating submenu4 is entered;...

  • Page 33: Caution

    5. Press the “SET key” to exit; 6. P Perform step 8 described in Example One. 7. CAUTION 7.1 When voltage signal of flow is negative, “-00.0” will be displayed. 7.2 Reference appendix 2 for more information about communication protocol. PRODUCTION SELECTION 8.1 Type selection Output...
  • Page 34 8.2 Order form D08- [t] - [b] - [s] Full scale Code [t] – Type 5sccm 10sccm [c] – Communication type -[2] RS232 20sccm -[4] RS485 30sccm [s] – Special request 50sccm -[-] percentage display(100.0),Chinese label. 100sccm -[S] List full scale(see table on right side) and other request. 200sccm 300sccm 500sccm...
  • Page 35 APPENDIX 2 D08-8CM COMMUNICATION PROTOCAL 1 ： Summary This protocol is applied to the communication between the Master(PC) and D08-8CM Flow Accumulator. Data format: hexadecimal Baud rate: 9600 b/s Data bits: 8 bits Stop bits: 1 bit Check bits: none 2 ：...
  • Page 36 The data “00~09” denotes corresponding number “0~9” ; The data “10~19” denotes corresponding number “0.~9.”; “0F” denotes blank; “0A” denotes “-” ; “1A” denotes “-.” ; Transferred sequence is from low digit to high digit; For example: (1)~(4)=00 10 09 0F denotes the instantaneous flow is “90.0”; (5)~(10) Cumulate flow value;...
  • Page 37 0D 8D CRC(calculated) ←Answer message from the Slave device The answer is identical to the request. 3 ： CRC calculation algorithm The CRC is calculated from all the bytes of the message excepted the CRC itself by using a “Cyclic redundancy check” with the following algorithm: Page 33 of 35...
  • Page 38 C code for a CRC calculation: CRC=0xFFFF; for(i=0;i<length(message)-1;i++) CRC=CRC^(message[i] & 0x00FF); for(j=0;j<8;j++) carry=CRC & 0x0001; CRC=CRC>>1; if(carry==0x0001)CRC=CRC^0xA001; Pascal Code for a CRC calculation: PROCEDURE CALCRC(var CRC:word; c:char); Var carry:word; I:byte BEGIN CRC := CRC XOR ( ord(c) AND $00FF ); For d := 0 To 7 Do Begin carry := CRC AND $0001 ;...
  • Page 39 Beijing Sevenstar Flow Co.,Ltd. D08 Series Flow Readout Boxes Beijing Sevenstar Flow Co., Ltd. Address: No.8 Wenchang Avenue Beijing Economic-Technological Development Area Post code： 100176 Tel： （+86）10-56178088 Fax： （+86）10-56178099 Homepage： www.mfcsevenstar.cn E-Mail: mfcsales@sevenstar.com.cn Room 511, Building 29, No.368 Zhangjiang Road, Pudong...

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