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4.4 ~85-265VAC Power Connection............... OPERATION INSTRUCTIONS................5.1 Start Up ........................5.2 Initial State......................5.3 Button Definitions....................5.4 Menu Instructions ....................5.5 Shut Down ......................EXAMPLE....................... CAUTION ....................... PRODUCTION SELECTION .................. APPENDIX One: COMMUNICATION PROTOCAL OF AC ACCUMULATOR ....D08 SERIES FLOW READOUT BOXES...
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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.
D08 SERIES FLOW READOUT BOXES D08-AC Flow Accumulator Operating Instruction 1. APPLICATION D08-AC Flow Accumulator provides operating power supply, flow accumulating, instantaneous flow rate and cumulate flow rate digital display of MFC/MFM. General speaking, D08-AC Flow Accumulator is compatible with D07 series MFC & MFM, and it can also compatible with other MFCs.
3. OPERATION PRINCIPLE D08-AC Accumulator is consisted of ±15V power supply, 5V power supply, modulus converter, instantaneous flow & cumulated flow displayer, 8 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 MCU.
Figure1. Dimensions of D08-AC 4.2 Seriel communication connection(Figure 2) Figure2. 9-pin Standard D-Sub socket When you use one Master (PC) communicated with one D08-AC Accumulator, we commend RS232 communication mode; When you use one Master(PC) communicated with many D08-AC Accumulators( the maximum is 64 ), we recommend 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);...
Figure 3. 15 pin Standard D-Sub connection with MFC It can be directly connected with MFC through D-Sub by cable. ~85-265VAC ±10% 50/60Hz power connection is showed in figure 3. 5. OPERATION 5.1 Startup After turning on the power switch of Flow Accumulator, it takes about 8 seconds to enter working state.
light or black, they are normal. 5.2 Initial State “Valve Drive” is default when Flow Accumulator runs for the first time , the green “ Valve Drive ” LBD will light at the same time. Full scale readout defaults to 100.0SCCM; communication addresses defaults to 1, 2, 3, 4 in turn and cumulate flow unit defaults to SCC.
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“OFF” Key This key is used to set MFC’s valve state to “OFF” state. “CHANNEL” Key This key is used to change the selected channel form current one to next one .If you want enter a certain channel’s submenus, you need press this key for several times to make the channel you want be selected.
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and then the tens digit will flash allowing being updated in the same way. So you can change the setpoint value from the last digit to the first digit. NOTICE 1 When the setpoint exceeds the Full Scale value, the setpoint value will automatically default to the Full Scale value after the “OK key”...
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This function of submenu is identical to submenu1, the range of address is 0~255. NOTICE When D08-AC 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. For the details, see 《 The Communication Protocal of D08-AC Flow Accumulator》below.
Submenu8: BAUD RATE SET When the displayed reading is “ ― ― ― 8”, press the “OK key” once, the display will read “1”or”2”or”3”,you can change these numbers by press “ADD/DEC” key. Press the “OK key” again, the change you make is saved ,and will return to submenu8.Each number represents different Seriel communication baud rate where “1”stand for 9600 baud,and”2”stand for 19200 baud,and”3”...
Press the “OK key” to save operation and return to submenu2, then depress the “SET key” to 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;...
new value will not take effect at once, because the MFC’s valve is still in the “OFF” state, you must press the “AUTO key” making the MFC’s valve be changed to the “AUTO” state, and then the new setpoint value will take effect. 7.3 D08-AC Flow Accumulator can also operate together with MFM, in this situation, the “Valve control”...
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D08- [t] - [b] - [c] -[s] Full scale Code [t] – Type 5sccm 10sccm [b] –Panel color -[H] Black 20sccm -[W] White 30sccm [c] – Communication type 50sccm -[2] RS232 100sccm -[4] RS485 200sccm [s] – Special request -[-] percentage display(100.0),Chinese label. 300sccm -[S] List full scale(see table on right side) and other request.
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Scale, Unit and Valve state (include Valve Control, Valve OFF and Valve Purge). You can download the PC Software for D08-AC Accumulator from my company’s Web(www.sevenstar.com.cn). 2.2 Reset the cumulate flow value to zero by PC Software. 2.3 Change the MFC’s valve state by PC Software.
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01 03 10 (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) CRCL CRCH which means: address of the device; Read instruction; Number of bytes read; (1)~(4) Instantaneous flow value; The data “00~09” denotes corresponding number “0~9” ; The data “10~19”...
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→ Request message from the Master(PC) 8 bytes 01 05 00 18 00 FF 0D 8D which means: address of the device; Clear cumulated flow ; 00 18 Starting address; 00 FF The meaning is Reset the cumulate flow value; 0D 8D CRC(calculated) ←Answer message from the Slave device...
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address of the device Write instruction; 01 0A Starting address; (1) (2) Setpoint value in hex. (1) is the Hi byte, (2) is the Lo byte; NOTICE When you set the setpoint value, you shouldn’t be concerned about the location of radix point, because the radix point’s location is identical to the Full Scale’s.
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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: Page 17 of 18...
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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 ; CRC := CRC SHR 1 ; If carry = $0001 Then CRC := CRC XOR $A001 ; End;...
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