NIDEK AUTO REFRACTOMETER ARK-710A INTERFACE MANUAL

Transcription

1 NIDEK AUTO REFRACTOMETER ARK-710A INTERFACE MANUAL MRK4D*RTZ001B/E TOTAL PAGE:

2 NIDEK CO., LTD. : 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi , Japan (Manufacturer) Telephone: (0533) Facsimile: (0533) NIDEK CO., LTD : 6th Floor, Takahashi Bldg., No.2, 3-chome, Kanda-jinboucho (Tokyo Office) Chiyoda-ku, Tokyo , Japan Telephone: (03) Facsimile: (03) Telex: NIDEK J NIDEK INCORPORATED : Westinghouse Drive Fremont, California 94539, U. S. A. (United States Agent) Telephone: (510) Facsimile: (510) NIDEK SOCIETE ANONYME : Europarc 13, rue Auguste Perret, CRETEIL, France (Authorized Representative) Telephone: (01) Facsimile: (01)

3 Table of Contents 1 OUTLINE Basic specifications of interface Single conductor connection TRANSMISSION SEQUENCE In the case of NIDEK In the case of NCP COMMAND FORMAT (FOR NIDEK ) DATA FORMAT CR (CARRIAGE RETURN) CODE TRANSMISSION OF SAGITTAL MEASURED DATA PREPARATION OF INTERFACE ARK-710A EXTERNAL PC INTERFACE PROGRAM ARK-710A EXTERNAL PC Flow of the sample program When I/F Mode is set to NIDEK: When I/F Mode is set to NCP10: Sample program When I/F Mode is set to NIDEK: When I/F Mode is set to NCP10: EXAMPLE OF DATA TRANSMISSION Printed data and transmission data Sample of KM output data when I/F Format is set to Short ERROR MESSAGE ON INTERFACE

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5 1 OUTLINE In order to transmit the measurement data with ARK-710A to an external computer, ARK-710A is provided with RS-232C interface as the standard function. This manual provides the way to receive the measurement data from ARK-710A utilizing this interface. This section introduces the specifications of interface for transmission between ARK-710A and a personal computer, etc. 1.1 Basic specifications of interface 1) Basic specifications : Conform to RS232C specifications 2) Connector : DIN 8 pin 3) Transmission form : Asynchronous (start-stop) 4) Transmission mode : Half duplex 5) Transmission speed : 9600/4800/2400/1200 bit/sec 6) Bit length : 8/7 bit 7) Parity check : Odd parity 8) Stop bit length : 1 bit 9) Data code : ASC II code 10) CR code : YES/NO *As Transmission mode, Parity check, and Stop bit length are fixed as above, it is necessary for the external computer to uniform these conditions.

6 Signal conductor connection External computer Serial transmission port (RS-232C) ARK-710A Interface connector side Dsub 9P (female) DIN 8P Connect side of ARK-710A interface connector with serial transmission port (RS-232C) of the external computer by using the above interface cable (model:opif-11) The interface cable can be used with either Nidek or NCP10 of the I/F mode (transmission sequence). If the connector of the external computer side is different from the above (Dsub 9P), a conversion adapter is needed.

7 2 TRANSMISSION SEQUENCE Two kinds of the transmission sequences, NIDEK and NCP10, can be selected by setup of the I/F Mode of the parameter. Communication sequence NIDEK NCP10 DTR/DSR control Yes No RS/SD command control Yes No Data transmission Not Available by the demand from a PC available Checksum data No Yes A setup of "NIDEK" is the same as the conventional transmission sequence. Pressing button performs data transmission in the setup of NCP10. Since complicated controls of DTR/DSR control, and RS/SD command control, etc., are not needed, NCP10 can communicate easily compared with "NIDEK". However, it does not correspond to data transmission by the demand from a personal computer side. Please use the transmission sequence suitable for the purpose. * Set the parameter «58: Eye Care C (LM)» to NO to send the data demanded by an external computer with the parameter «51: I/F Mode» set to NIDEK. 2.1 In the case of NIDEK DTR/DSR control is as follows. Transmitter Same timing Same timing Receiver T1, T2 0.1 sec. (Time limit: T1, T2 > 0.1 sec.) Take down DTR as soon as possible after sent and received EOT.

8 2-2 RS/SD command control is as follows. [When the print button is pressed:] ARK-710A Print button External computer RS command SD command Data [When the data is demanded from an external computer:] ARK-710A External computer SD command Data CL command 2.2 In the case of NCP10 DTR/DSR control is not performed. DTR signal of the ARK-710A is always low on the circuit. DTR signal of the external computer side does not affect the transmission in either condition. Moreover since RS/SD command control is not performed, pressing the print button sends the data directly. ARK-710A Print button External computer Data

9 3 COMMAND FORMAT (FOR NIDEK ) All characters for the transmitting and receiving data are adapted for ASCII code. 1) RS command (Demands 2) SD command to the external computer from the ARK-710A) SOH C * STX R S ETB EOT * 01H 43H 2AH 2AH 02H 52H 53H 17H 04H H: HEX (16 radix) 2) SD command (Demands measured data transmission to the ARK-710A from the external computer) 1) When the AR measured data is demanded: SOH C R M STX S D ETB EOT 2) When the KM measured data is demanded: SOH C K M STX S D ETB EOT 3) When the AR and KM measured data are demanded: SOH C R K STX S D ETB EOT 3) CL command (Demands to clear the measurement data to the ARK-710A from the external computer) SOH C R M STX C L ETB EOT SOH C K M STX C L ETB EOT SOH C R K STX C L ETB EOT The all clear processing performs to the above header. When the all clear processing performs, the next measurement is prepared such as the time of pressing the print button. When the measurement is started after preparation, previous data is all cleared and the next patient s data is measured.

10 4 DATA FORMAT 1) Basic format 1) AR measured data SOH D R M STX ETB ETB ETB EOT 2) KM measured data Data ƒf [ƒ^ Data ƒf [ƒ^ Data SOH D K M STX ETB ETB ETB EOT 3) AR and KM measured data Data Data Data ƒf [ƒ^ ƒf [ƒ^ ƒf [ƒ^ SOH D R M STX ETB ETB ƒf [ƒ^ Data ƒf [ƒ^ Data ƒf [ƒ^ Data SOH D K M STX ETB ETB EOT ƒf [ƒ^ Data Data ƒf [ƒ^ After the ARK-710A receives SD command, it will start the transmission of the measured data in this format. When the transmission sequence (I/F Mode) is set to NCP10, four digits of checksum are inserted after EOT of each data format. 2) Transmission data of the ARK-710A a ) Company name / Model name b ) Patient number c ) Patient ID d ) Date and time of measurement e ) Vertex distance f ) Working distance g ) Objective measured data h ) Contact lens conversion data i ) Trial lens data j ) Pupil distance k ) KM measured data l ) Corneal size measured data m) Pupil size measured data n ) Checksum 3) Data The number inside the parentheses indicates the number of transmission character. a) Company name / Model name 7 1 ID code Company name Model name * When the parameter item No.52 I/F Format is set to Short and the only KM data is demanded (refer to 2) of the section 3), company name and model name are not transmitted.

11 4-2 b) Patient number No. code Patient number (4) c) Patient ID Transfer the data when the patient ID is inputted by the bar code reader. IP code Patient ID Transfer the number of inputted letters (maximum 31 letters). (20 letters for printing) d) Data and time of measurement 1) When Date Format is set to Y.M.D : Date code Year (4) Month (2) Date (2) Hour (2) Minute (2) AM/PM (2) 2) When Date Format is set to M.D.Y : Date code Month (3) Date (2) Year (4) Hour (2) Minute (2) AM/PM (2) 3) When Date Format is set to D.M.Y : Date code Date (2) Month (3) Year (4) Hour (2) Minute (2) AM/PM (2) e) Vertex distance VD code Vertex distance (5)

12 4-3 f) Working distance 3 5 WD code Working distance (2) g) Objective measured data When selected value is taken after three or more measurements, the order of transmission is from the selected value to each value (from the last value to former ones). The order of R/L is from L to R. If IOL ( * ) Mark is set to YES, IOL measured mark * is inserted on the data that was measured by AR in the condition of indicating the IOL ON mark. 1) Left eye data R/L code (2) SPH (6) CYL (6) AXIS (3) 2) Right eye data Confidence IOL code (1) measured mark (1) R/L code (2) SPH (6) CYL (6) AXIS (3) Confidence IOL code (1) measured mark (1) 3) Reference value (Confidence index is E.) If Error Data is set to YES, the data whose Confidence index (indicates the degree of reliance) is under 5, can be measure as a reference value. In this case, E is inserted to the end of the transmitted data. R/L code (2) SPH (6) CYL (6) AXIS (3) Confidence code (1) E code (1) IOL measured mark (1)

13 4-4 4) Error data If Error Print is set to YES, the Error is stored in memory and transmitted together with the measured AR values. Err. code Kind of error (2) h) Contact lens conversion data 1) Left eye data Kind of error Contents +0 +SPH range over -0 -SPH range over C 0 CYL over * If the parameter I/F format is set to Short; 1) Only the selected value as objective measured data is transmitted. 2) When the selected value could not be obtained, only the last one in the values whose confidence index is not under 5 is transmitted. 3) When only reference values could be obtained, the last value is transmitted simply. 4) The Error data is not transmitted. R/L code (2) SPH (6) CYL (6) AXIS (3) 2) Right eye data R/L code (2) SPH (6) CYL (6) AXIS (3) i) Trial lens data 1) Left eye data R/L code (2) SPH (6) CYL (6) AXIS (3) 2) Right eye data R/L code (2) SPH (6) CYL (6) AXIS (3) * If the parameter TL Print is set to NO, the trial lens data is not transmitted. Also, if the selected value could not be obtained, no data is transmitted.

14 4-5 j) Pupil distance 1) When both right and left PD values are measured: PD code PD (2) R.PD (2) L.PD (2) N.PD (Near point PD) (2) 2) When Far point PD value only: PD code PD (2) R.PD (2) L.PD (2) N.PD (Near point PD) (2) * If the parameter Near PD is set to NO, only?? is transmitted. * If the PD values are measured more than one time, the measured data is transmitted in new order. However, if the parameter I/F format is set to Short, only the last PD value is transmitted. k) KM measured data When the selected valued is taken after three or more measurements, the order of transmission is from the selected value to each value ( from the last value to former ones). The order of R/ L is from L to R. * If the parameter item No. 52 I/F Format is set to Short: 1) Only the selected value as KM measured data is transmitted. 2) When the selected value could not be obtained, only the last one among the measured data is transmitted. 3) Data (D) (unit of data is Diopter) is not transmitted. 1) Left eye (mm) data R/L code (2) 2) Left eye (D) data R/L code (2)

15 4-6 3) Right eye (mm) data R/L code (2) R/L code (2) l) CS (Corneal size) measured data * If the parameter item No. 52 I/F Format is set to Short, this data is not transmitted. 1) Left eye data 2) Right eye data R/L code (2) R/L code (2) m) PS (Pupil size) measured data * If the parameter item No. 52 I/F Format is set to Short, the data is not transmitted. 1) Left eye data 2) Right eye data R/L code (2) Target lamp (1) R/L code (2) Target lamp (1) Target lamp transfers the state of the target lamp during PS measuring. N: Target lamp ON F: Target lamp OFF

16 4-7 n) Checksum If the parameter I/F Mode is set to NCP10, checksum is inserted on the data format. It is inserted after EOT of each data format. Data Checksum (4) The checksum is indicated with the hexadecimal numeral of 4 digits. The value of the checksum is the simple sum from "SOH" to "EOT" of the data format. However, the "CR" code is not obtained in calculation of the checksum when the "CR" code is inserted.

17 5 CR (CARRIAGE RETURN) CODE When the personal computer is used as the external computer for receiving the data, it may be necessary to insert CR code into the end of transmitting data for one line. It is possible for ARK- 710A to insert CR code into the end of the data or not. (Refer to 3) of the section 6 ) The transmitting data are as follows when CR code is inserted. 1) RS command with CR code CR code is inserted into the end of data. 2) Data with CR code (When I/F Mode is set to NIDEK) Data Data Data CR code is inserted into both positions after the ETB code and the end of data. 3) Data with CR code (When I/F Mode is set to NCP10) Data Data Data Checksum CR code is inserted into both positions after the ETB code and the end of data.

18 6 TRANSMISSION OF SAGITTAL MEASURED DATA The transmission format of each data of Sagittal measurement is described hereunder. Sagittal measurement data are shown in the print out sample as below from following to KM measured data. Basic transmitting and receiving sequences are stipulated in the aforementioned 2. Printed data by ARK-710A Transmission format DKM NO.0001 DADEC/18/ :50AM L DL FA25 LS A LI A LT A LN A LE LR LA = 01H SOH = 02H STX = 17H ETB = 04H EOT = 0DH is added in accodance with setting.

19 6-2 Header : This signifies KM measured data to be transmitted. Patient number Measured date and time KM measured (mm) data : R1(5), RS(5), AXIS(3), AVE(5) KM measured (D) data : R1(5), AXIS(3), AVE(5), CYL(6) Fixed angle in Sagittal measurement : FIXED ANGLE(2) Sagittal value for SUP. direction : SAGIT1(5), SAGIT2(5), ECC(5), A/F(1) Sagittal value for INF. direction : SAGIT1(5), SAGIT2(5), ECC(5), A/F(1) Sagittal value for TEM. direction : SAGIT1(5), SAGIT2(5), ECC(5), A/F(1) Sagittal value for NAS. direction : SAGIT1(5), SAGIT2(5), ECC(5), A/F(1) Among the each Sagittal values from to their meanings are : SAGIT1 : Measured value SAGIT2 : Measured value including dro ECC : Each eccentricity A/F : Whether calculation for conversion axis is made or not. (A : Conversion of axis is made.) Horizontal, Vertical and Total eccentricity : eh(5), ev(5), E(5) Each corneal radius values : Rh(5), Rv(5), Ro(t), dro(5) Horizontal corneal radius average value :(Rh) Vertical corneal radius average value : (Rv) Central corneal radius average value : (Ro) Central corneal radius differences : (dro) Cylindrical diopters and its differences at center and peripheral : ASTc(6), ASTp(6), dast(6) Central corneal cylinder diopter : (ASTc) Peripheral corneal cylinder diopter : (ASTp) Difference of corneal cylinder diopter between center and peripheral : (dast) * Values in the parentheses ( ) show the data length. * When data are output, all data are printed out with the above format regardless the Sagittal printing format.

20 7 PREPARATION OF INTERFACE ARK-710A EXTERNAL PC Actual transmission method is explained with attached sample program in this section. The external computer uses the IBM PC compatible (IBM100% COMPATIBLE). 1) Connect side of ARK-710A interface connector with serial transmission port (RS-232C) of the external computer by using the interface cable (OPIF-11). 2) Input the sample program of one of transmission sequences into the external computer. BASIC application uses Visual Basic. 3) Set up ARK-710A as follows. I/F Mode : Depending of the sample program. Baud-Rate : 9600 Bit Length : 8 CR Code : YES Refer to the operator s manual 8.1 Setting parameters for the setting method of the parameter. 4) Perform the measurement by the ARK-710A and press the print button in the condition that the sample program is operating. If the transmission performs normally, measured data is displayed on the monitor of the computer. When I/F Mode is set to NIDEK When I/F Mode is set to NCP10

21 8 INTERFACE PROGRAM ARK-710A EXTERNAL PC 8.1 Flow of the sample program When I/F Mode is set to NIDEK: [External PC] [ARK-710A]

22 When I/F Mode is set to NCP10: [External PC] [ARK-710A]

23 Sample program When I/F Mode is set to NIDEK: '********************************************** '* Input DATA from ARK/AR for IBM PC-AT * '* Sample Program for I/F Mode = NIDEK * '* (Visual Basic) * '********************************************** ' Setting of ARK/AR ' I/F Mode = NIDEK ' Baud-Rate = 9600 ' Bit Length = 8 ' CR Code = NO ' Dim TimeupFlag, RecEotFlag As Integer Dim Buf, L_Buf As String Private Sub Form_Load() ' Initialize Display Messages Text1.Text = "" Label1.Caption = "Receive Data" Label3.Caption = "Communication with AR/ARK" Label4.Caption = "Push Start Button" Command1.Caption = "Start" ' Initialize MSComm Control MSComm1.CommPort = 1 MSComm1.Settings = "9600,o,8,1" MSComm1.RThreshold = 1 End Sub Private Sub Command1_Click() CRM_SD = Chr(1) + "CRM" + Chr(2) + "SD" + Chr(23) + Chr(4) ' SD command for AR CRK_SD = Chr(1) + "CRK" + Chr(2) + "SD" + Chr(23) + Chr(4) ' SD command for ARK CXX_RS = Chr(1) + "C**" + Chr(2) + "RS" + Chr(23) + Chr(4) ' RS command Text1.Text = "" Label4.Caption = "Initializing... " ' Open COM1 port If MSComm1.PortOpen = False Then MSComm1.PortOpen = True ' Serial Port open MSComm1.DTREnable = False ' DTR off Timer1.Enabled = False Timer1.Interval = 2000 Timer1.Enabled = True: TimeupFlag = False Do ' Waiting for DSR turn off DoEvents Loop Until TimeupFlag = True End If Label4.Caption = "Waiting for RS command (DSR)" L_Buf = "": RecEotFlag = False Do ' Check DSR DoEvents Loop Until MSComm1.DSRHolding = True Label4.Caption = "Waiting for RS command (Text)" Timer1.Interval = 5000 Timer1.Enabled = True: TimeupFlag = False MSComm1.DTREnable = True Do ' Waiting for RS command DoEvents If TimeupFlag = True Then Exit Do End If Loop Until RecEotFlag = True If L_Buf = CXX_RS Then ' DTR on

24 8-4 Label4.Caption = "Waiting for SD command transmitting (DSR)" L_Buf = "": RecEotFlag = False Do ' Check DSR DoEvents Loop Until MSComm1.DSRHolding = True MSComm1.Output = CRM_SD ' Send SD command for AR Label4.Caption = "Waiting for DATA (Text)" Timer1.Interval = 5000 Timer1.Enabled = True: TimeupFlag = False Do ' Waiting for Data DoEvents If TimeupFlag = True Then Exit Do End If Loop Until RecEotFlag = True If RecEotFlag = True Then Label4.Caption = "Finished DATA receiving" & vbnewline & "Push Start Button" Else Label4.Caption = "EOT error!!!" & vbnewline & "Push Start Button" End If Else Label4.Caption = "RS Command Error (Terminated)" & vbnewline & "Push Start Button" End If If MSComm1.PortOpen = True Then MSComm1.PortOpen = False End If End Sub Private Sub MSComm1_OnComm() Select Case MSComm1.CommEvent Case comevreceive ' Receive Buf = MSComm1.Input L_Buf = L_Buf + Buf Text1.Text = Text1.Text + Buf If Right$(L_Buf, 1) = Chr(4) Then ' Check end of data RecEotFlag = True Text1.Text = Text1.Text + vbnewline End If Case comevcts Case comevdsr Case comevcd Case comevring Case comeveof Case Else MsgBox "Error", vbcritical End Select End Sub Private Sub Form_Unload(Cancel As Integer) If MSComm1.PortOpen = True Then MSComm1.PortOpen = False End If End Sub Private Sub Timer1_Timer() TimeupFlag = True Timer1.Enabled = False End Sub

25 When I/F Mode is set to NCP10: '********************************************** '* Input DATA from ARK/AR for IBM PC-AT * '* Sample Program for I/F Mode = NCP10 * '* (Visual Basic) * '********************************************** ' Setting of ARK/AR ' I/F Mode = NCP10 ' Baud-Rate = 9600 ' Bit Length = 8 ' CR Code = NO ' Dim TimeupFlag, RecEotFlag As Integer Dim Buf, L_Buf As String Private Sub Form_Load() ' Initialize Display Messages Text1.Text = "" Label1.Caption = "Receive Data" Label3.Caption = "Communication with AR/ARK" Label4.Caption = "Push Start Button" Command1.Caption = "Start" ' Initialize MSComm Control MSComm1.CommPort = 1 MSComm1.Settings = "9600,o,8,1" MSComm1.RThreshold = 1 End Sub Private Sub Command1_Click() Text1.Text = "" ' Open COM1 port If MSComm1.PortOpen = False Then MSComm1.PortOpen = True End If L_Buf = "" RecEotFlag = False TimeupFlag = False Timer1.Enabled = False Label4.Caption = "Waiting for DATA receiving" Do ' Waiting for Data DoEvents If RecEotFlag = True Then Exit Do End If ' Serial Port open Loop Until TimeupFlag = True If RecEotFlag = True Then Label4.Caption = "Finished Data Recieving" & vbnewline & "Push Start Button" Else Label4.Caption = "EOT error!!!" & vbnewline & "Push Start Button" End If If MSComm1.PortOpen = True Then MSComm1.PortOpen = False End If End Sub Private Sub MSComm1_OnComm() Dim s As Integer Select Case MSComm1.CommEvent Case comevreceive Buf = MSComm1.Input L_Buf = L_Buf + Buf Text1.Text = Text1.Text + Buf If TimerFlag = False Then Timer1.Enabled = True ' Receive Data ' Timer Start

26 8-6 End If Timer1.Interval = 1000 ' Set interval time s = Len(L_Buf) If s > 4 Then If Mid$(L_Buf, s - 4, 1) = Chr(4) Then RecEotFlag = True Timer1.Enabled = False End If End If Case comevcts Case comevdsr Case comevcd Case comevring Case comeveof Case Else MsgBox "Error", vbcritical End Select End Sub Private Sub Form_Unload(Cancel As Integer) If MSComm1.PortOpen = True Then MSComm1.PortOpen = False End If End Sub Private Sub Timer1_Timer() TimeupFlag = True Timer1.Enabled = False End Sub

27 9 EXAMPLE OF DATA TRANSMISSION 9.1 Printed data and Transmission data a. Printed data ---Patient No. ---Patient ID ---Name, Sex ---Measured date and time ---Pupil distance ---Working distance ---Right eye: 1st, Normal data ---Right eye: 2nd, Error (CYL over) ---Right eye: 3rd, Normal data ---Right eye: 4th, Reference value data ---Right eye: 5th, Normal data ---Right eye: Selected data ---Right eye: Trial lens data ---Right eye: Contact lens data ---Right eye: SE value data for contact lens ---Right eye: 1st, KM data ---Right eye: 2nd, KM data ---Right eye: 3rd, KM data ---Right eye: KM selected data ---Right eye: Corneal size data and Pupil size data ---Right eye: Contact lens brand, Lens size, Base curve

28 Left eye: 1st, Normal data ---Left eye: 2nd, Normal data ---Left eye: 3rd, Error (SPH-over) ---Left eye: 4th, Normal data ---Left eye: Selected data ---Left eye: Trial lens data ---Left eye: Contact lens data ---Left eye: SE value data for contact lens ---Left eye: 1st, KM data ---Left eye: 2nd, KM data ---Left eye: 3rd, KM data ---Left eye: KM selected data ---Left eye: Corneal size data and Pupil size data ---Left eye: Contact lens brand, Lens size, Base curve ---Pupil distance: Far and near point ---Pupil distance: Far point (with single data) and near point ---Comment

29 9-3 b. Transmission data against example printed data DRM... IDNIDEK/ARK-710A... NO IP DA2003/01/09.10:50AM... VD WD35... OL OL EL-O... OL OL OR OR OR E... OR ERCO... OR CL CR TL TR PD PD67????62... DKM... L DL L DL L DL L DL R DR R DR R DL L DL SL PL06.0F... SR PR06.0N... BLNIDEK HARD BRNIDEK HARD Header for AR data Company name and Model name Patient number Patient ID Measured date and time Vertex distance Working distance Left eye: AR selected data 4th, Normal data 3rd, Error (SPH-over) 2nd, Normal data 1st, Normal data Right eye: AR selected data 5th, Normal data 4th, Reference value data 3rd, Normal data 2nd, Error (CYL over) 1st, Normal data Left eye: Contact lens data Right eye: Contact lens data Left eye: Trial lens data Right eye: Trial lens data Pupil distance: Far point (with single data) and near point Pupil distance: Far and near point Header for KM data Left eye: KM selected data (mm) KM selected data (D) 3rd, KM data (mm) KM data (D) 2nd, KM data (mm) KM data (D) 1st, KM data (mm) KM data (D) Right eye: KM selected data (mm) KM selected data (D) 3rd, KM data (mm) KM data (D) 2nd, KM data (mm) KM data (D) 1st, KM data (mm) KM data (D) Left eye: Corneal size data Left eye: Pupil size data Right eye: Corneal size data Right eye: Pupil size data Left eye: Contact lens brand, Lens size, Base curve Right eye: Contact lens brand, Lens size, Base curve

30 9-4 * The following marks designate the control code. = SOH 01H = ETB 17H = STX 02H = EOT 04H * When CR Code is set to YES, CR is inserted after ETB. * When the parameter I/F Mode is set to NCP10, four digits of checksum are inserted on the data format after.

31 Sample of KM output data when I/F Format is set to Short a. Print data sample ---Patient No. ---Name, Sex ---Measured date and time ---Right eye: KM selected data ---Right eye: Corneal size data and Pupil size data ---Right eye: Contact lens brand, Lens size, Base curve ---Left eye: KM selected data ---Left eye: Corneal size data and Pupil size data ---Left eye: Contact lens brand, Lens size, Base curve ---Comment b. Transmission data against above example printed data DKM... Header for KM data NO Patient No. DA2003/01/09.10:50AM... Measured date and time L Left eye: KM selected data (mm) R Right eye: KM selected data (mm) Above are samples of transmitting data in the case SD command is CKM.(refer to 2) of the section 3) As the I/F Format is set to Short, KM data is transmitted only for selected (mm) data. Company name, model name, CS (Corneal size) and PS (Pupil size) measured data, and CL select data are not transmitted.

32 10 ERROR MESSAGE ON INTERFACE If any error happens during communication between ARK-710A and the external computer, the ERROR MESSAGE will be displayed on the display pannel. If the parameter Error code is set to YES, the error code number will be displayed as follows. Error code Table Error code Parameter Content Symptom NO YES 11 Err IF ERR 11 DSR Error 1 12 Err IF ERR 12 DSR Error 2 Activation of DSR does not become high at receiving sequence of SD command. Activation of DSR does not become high at transmission of measured data. 13 Err IF ERR 13 Data Error Data to be received is not transmitted. 14 Err IF ERR 14 Overflow Too much buffer store of receiving data. 15 Err IF ERR 15 Command Error Received incorrect command. 16 no dat. ERR 16 Data Empty No data to be transmitted.