Nidek Medical ARK-530A User manual

September 2009
Pages in total - 52
XRK8A*RTZ001B/E
INTERFACE MANUAL
INTERFACE MANUAL
ARK-530A/ARK-510A
ARK-530A/ARK-510A
AUTO REF/KERATOMETER
AUTO REF/KERATOMETER
Mo
Model

NIDEK CO., LTD. : 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi 443-0038, Japan
(Manufacturer) Telephone:[phone]
Facsimile: [phone]
NIDEK CO., LTD : 3F Sumitomo Fudosan Hongo Bldg., 3-22-5, Hongo,
(Tokyo Office) Bunkyo-Ku, Tokyo 113-0033, Japan
Telephone:[phone]
Facsimile: [phone]
NIDEK INCORPORATED : 47651 Westinghouse Drive, Fremont, California 94539, U. S. A.
(United States Agent) Telephone:[phone]
Facsimile: [phone]
NIDEK SOCIETE ANONYME : Europarc 13, rue Auguste Perret, 94042 CRETEIL, France
(EU Authorized Representative) Telephone: [phone]
Facsimile: [phone]

Table of Contents
1
1. OUTLINE OF COMMUNICATION. . . . . . . . . . . . . . . . . . . . 3
1.1 Interface Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2. RS-232C COMMUNICATION . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Outline of RS-232C Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.1.1 Communication sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.2.1 Command format (with “NIDEK”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.2.2 Data format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.2.3 CR (Carriage Return) Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2.3 Communication Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
2.3.1 Interface between the ARK-530A/510A and external PC. . . . . . . . . . . . . . . . . . . .19
2.3.2 Flow of sample program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
2.3.3 Sample program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3. LAN COMMUNICATION. . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.1 Outline of LAN Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
3.1.1 Outline of communication function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
3.1.2 Reception structure of measurement data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
3.2 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
3.2.1 Folder configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
3.2.2 Measurement data (image data) output file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
3.2.3 Response to data acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
3.2.4 XML file configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
3.2.5 Style sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
3.2.6 XML file sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4. EXAMPLE OF RECEIVED DATA. . . . . . . . . . . . . . . . . . . 37
4.1 Example of Measurement Data Received by PC. . . . . . . . . . . . . . . . . . . . . . . . .37
4.2 Sample Printout of KM Data when the I/F FORMAT Parameter is Set to Short45
4.3 Transmission of Sagittal Measurement Data . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
4.4 Interface Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

2
:

3
1
1. OUTLINE OF COMMUNICATION
1.1 Interface Type
The ARK-530A/510A comes equipped with the following two types of interface to transfer measure-
ment data to external computers:
•RS-232C interface
•LAN interface
This interface manual describes the method of receiving measurement data from the ARK-530A/510A
using the RS-232C interface in Chapter 2 and the LAN interface in Chapter 3.

4
OUTLINE OF COMMUNICATION: Interface Type

5
2
2. RS-232C COMMUNICATION
2.1 Outline of RS-232C Communication
To transmit data measured by the ARK-530A/510A to an external computer, the ARK-530A/510A
comes equipped with an RS-232C interface. This manual provides the method of receiving the mea-
surement data from the ARK-530A/510A through this interface.
This chapter describes the specifications for the interface for data transmission between the ARK-
530A/510A and a personal computer, etc.
{Basic interface specifications
As the Transmission system, Parity check, and Stop bit length are fixed as above, it is necessary for
the external computer to conform to these specifications.
1 Basic spec In accordance with RS-232C standards
2 Connector DIN 8-pin
3 Transmission method Asynchronous
4 Transmission system Half duplex
5 Baud rate 9600/4800/2400/1200 bit/sec
6 Bit length 8/7 bit
7 Parity check Odd parity
8 Stop bit 1 bit
9 Data code ASCII code
10 CR code YES (added)/ NO (Not added)

6
RS-232C COMMUNICATION: Outline of RS-232C Communication
{Cable connection
Connect the ARK-530A/510A interface port and the serial communication port (RS-232C) of
the external computer with the above interface cable (Model: OPIF-15).
This interface cable allows the “71. I/F MODE” parameter to be set either to “Nidek” or “NCP10”.
Connection to the external computer by any means other than that specified above (Dsub 9P) needs a
conversion adapter.
㧝
㧞
㧟
㧠
㧡
㧢
㧣
㧤
㧥
㧱
㧝
㧞
㧟
㧠
㧡
㧢
㧣
㧤
㧱
4'&
140
$.7
$.74'&
)4;
;'.
4'&
140
;'.
$.7
$.74'&
)4;
4:&
6:&
&64
5)0&
&54
465
%65
()0&
6:&
4:&
465
%65
&54
5)0&
&64
()0&
1
2
3
4
5
67
8
1
9
5
6
External computer
Serial communication
port
(RS-232C)
ARK-530A/510A
Interface connector
D-sub 9P (female) DIN 8P

7
RS-232C COMMUNICATION: Outline of RS-232C Communication
2
2.1.1 Communication sequence
Two types of the transmission sequences, “NIDEK” and “NCP10”, can be selected by setting the “71.
I/F MODE” parameter.
With “NIDEK”, the transmission sequence is the same as the conventional transmission sequence.
With “NCP10”, press the button to transmit data. Because “NCP10” does not need complicated
controls such as the DTR control, DSR control, RS command control, SD command control, etc., it
allows easier communication compared with “NIDEK”. However, with “NCP10”, data transmission in
response to a request from the personal computer is not available. Select a transmission sequence
that suits your needs or purposes.
{When the I/F MODE parameter is set to NIDEK
DTR/DSR control:
T1, T2 = 0.1 sec.
(Time-out period: T1, T2 > 0.1 sec.)
Disable DTR as soon as possible after the transmission and reception of EOT.
COMMUNICATION SEQUENCE NIDEK NCP10
DTR/DSR control Performed Not performed
RS/SD command control Performed Not performed
Data transmission in response to a request from the
PC Possible Not possible
Checksum data Not present Present
Data
Data
Same timing
Same timing
Sending
end
Receiving
end

8
RS-232C COMMUNICATION: Outline of RS-232C Communication
{RS/SD command control:
[When the print button ( ) is pressed:]
[When a data send request is sent from the external computer:]
{When the “I/F MODE” parameter is set to NCP10
The DTR/DSR control is not performed. The DTR signal of the ARK-530A/510A is constantly at a low
state on a line. The DTR signal of the external computer does not affect the transmission under either
condition.
In addition, since the RS/SD command control is not performed, pressing the print button ( )
sends the data directly.

9
RS-232C COMMUNICATION: Data Format
2
2.2 Data Format
2.2.1 Command format (with “NIDEK”)
ASCII characters are used for data transmission and reception.
1 RS command
Sends a request for 2 SD command to the external computer from the ARK-530A/510A.
2 SD command
Sends a request for measurement data transmission to the ARK-530A/510A from the exter-
nal computer.
1) For requesting AR measurement data:
2) For requesting KM measurement data:
3) For requesting AR and KM measurement data:
3CLcommand
Sends a request to clear measurement data to the ARK-530A/510A from the external com-
puter.
This process clears the above commands. This is the equivalent of pressing the print button
( ), after which preparations for the next measurement are made.
When the measurement is started after preparation, the previous data is cleared and the
next patient is measured.
H: HEX (Hexadecimal)
SOH C * * STX R S ETB EOT
01H 43H 2AH 2AH 12H 52H 53H 17H 04H
SOH C R M STX S D ETB EOT
SOH C K M STX S D ETB EOT
SOH C R K STX S D ETB EOT
SOH C R M STX S D ETB EOT
SOH C K M STX S D ETB EOT
SOH C R K STX S D ETB EOT

10
RS-232C COMMUNICATION: Data Format
2.2.2 Data format
{Basic format
1) AR measurement data:
2) KM measurement data:
3) AR and KM measurement data:
When the ARK-530A/510A receives the SD command, data transmission is started in this format.
When the “71. I/F MODE (Interface Mode)” parameter is set to “NCP10”, four digits of checksum are
added after “EOT” in each data format.
{Data transmitted from the ARK-530A/510A
SOH D R M STX Data ETB Data ETB Data ETB EOT
SOH D K M STX Data ETB Data ETB Data ETB EOT
SOH D R M STX Data ETB Data ETB Data ETB
SOH D K M STX Data ETB Data ETB EOT
1) Company name / Model name 2) Patient number
3) Patient ID 4) Date and time of measurement
5) Vertex distance 6) Near working distance
7) Objectively measurement data 8) Contact lens conversion data
9) Optimum trial lens data 10) Pupillary distance
11) KM measurements 12) Corneal size measurements
13) Pupil size measurements 14) Checksum

11
RS-232C COMMUNICATION: Data Format
2
{Data
The number inside the parentheses indicates the number of characters transmitted.
1 Company name / Model name
When the “72. I/F FORMAT” parameter is set to “SHORT” and a request for KM data only is
sent (see “2 SD Command” of 2.1), the company name and model name are not transmitted.
2 Patient number
3 Patient ID
Transfer the data when the patient ID is inputted by the bar code reader.
4 Date and time of measurement
When the time format is set to “AM/PM”
1) When the “38. DATE FORMAT” parameter is set to “Y/M/D”:
2) When the “38. DATE FORMAT” parameter is set to “M/D/Y”:
3) When the “38. DATE FORMAT” parameter is set to “D/M/Y”:
IDN I DEK / ARK - 530A
ID code Company name Model name (ARK-530A)
IDN I DEK / ARK - 510A
ID code Company name Model name (ARK-510A)
NO0123
No. code Patient number (4)
IP01234567 • • • 27 28 29 30
IP code Patient ID Transfer the number of inputted letters (maximum 31 letters).
(20 letters for printing)
DA2006.05.12.01:23PM
Date
code Year (4) Month (2) Date (2) Hour (2) Minute (2) AM/PM (2)
DAMAY/12/2006.01:23PM
Date
code Month (3) Date (2) Year (4) Hour (2) Minute (2) AM/PM (2)
DA12/MAY/2006.01:23PM
Date
code Date (2) Month (3) Year (4) Hour (2) Minute
(2) AM/PM (2)

12
RS-232C COMMUNICATION: Data Format
When the time format is set to “24H”
1) When the “38. DATE FORMAT” parameter is set to “Y/M/D”:
2) When the “38. DATE FORMAT” parameter is set to “M/D/Y”:
3) When the “38. DATE FORMAT” parameter is set to “D/M/Y”:
5 Vertex distance
6 Near working distance
7 Objectively measurement data
After median values have been obtained after three or more measurements, the median val-
ues are transmitted first and then respective items of data are transmitted (in order of acqui-
sition time with the latest data first). Order of R/L: L Æ R.
When the “45. CAT MARK” parameter is set to “YES”, a CAT measurement mark “*” is added to the
data to indicate it was measured by the AR with the CAT measurement mode icon ( ) displayed.
1) Left eye data
2) Right eye data
DA2006.05.12.01:23
Date
code Year (4) Month (2) Date (2) Hour (2) Minute (2)
DAMAY/12/2006.01:23
Date
code Month (3) Date (2) Year (4) Hour (2) Minute
(2)
DA12/MAY/2006.01:23
Date
code Date (2) Month (3) Year (4) Hour (2) Minute (2)
VD12 . 00
VD code Vertex distance (5)
WD40
WD code Working distance
(2)
OL-05.25-00.75109 9 *
R/Lcode
(2) SPH (6) CYL (6) AXIS (3) Confidence
code (1) CAT mark
(1)
OR-05.00-00.50034 8 *
R/Lcode
(2) SPH (6) CYL (6) AXIS (3) Confidence
code (1) CAT mark
(1)

13
RS-232C COMMUNICATION: Data Format
2
3) Reference value (Confidence index is "E”.)
When “44. 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
added to the end of the transmitted data.
4) Error data
When “46. ERROR PRINT” is set to “YES”, the measurement errors are stored in memory
and transmitted together with AR measurement data.
When the “72. I/F FORMAT” parameter is set to “SHORT”:
• Only median values are transmitted as objectively measurement data.
• When the median value could not be obtained, only the last one in the values whose confidence
index is not under 5 is transmitted.
• When only the reference value is existed, only the latest data in the reference vales is transmitted.
• The error data is not transmitted.
OR-05.00-00.50034 E *
R/Lcode
(2) SPH (6) CYL (6) AXIS (3) Confidence
E code (1) CAT mark
(1)
ER+0
ERROR
code Type of error (2)
Type of error Content
+O Positive SPH range over error
-O Negative SPH range over error
CO CYL range over error

14
RS-232C COMMUNICATION: Data Format
8 Contact lens conversion data
1) Left eye data
2) Right eye data
When “54. CL PRINT” is set to “NO”, contact lens conversion data is not transmitted.
9 Optimum trial lens data
1) Left eye data
2) Right eye data
When the “53. TL PRINT” parameter is set to “NO”, trial lens data is not transmitted.
When the median value could not be obtained from the objectively measurement result, the
data is not transmitted.
10 PD measurement
1) When both right and left PD values are measured:
2) When the distance PD value only is measured:
ie
When the “55. NEAR PD PRINT” parameter is set to “NO”, only “??” in N.PD is transmitted.
When the PD values are measured more than one time, the measurement PD data is trans-
mitted in order of acquisition time with the latest PD data first. However, when the “72. I/F
FORMAT” parameter is set to “SHORT”, only the latest PD value is transmitted.
CL-05.25-00.75109
R/Lcode
(2) SPH (6) CYL (6) AXIS (3)
CR-05.00-00.50034
R/Lcode
(2) SPH (6) CYL (6) AXIS (3)
TL-05.25-00.75109
R/Lcode
(2) SPH (6) CYL (6) AXIS (3)
TR-05.00-00.50034
R/Lcode
(2) SPH (6) CYL (6) AXIS (3)
PD68353363
PD code
(2) PD (2) RPD (2) LPD (2) N. PD (2)
(Nearpoint
PD)
PD68??????
PD code
(2) PD (2) RPD (2) LPD (2) N. PD (2)
(Nearpoint
PD)

15
RS-232C COMMUNICATION: Data Format
2
11 KM measurements
When median values have been obtained after three or more measurements, the median
values are transmitted first and then respective items of data are transmitted (in order of
acquisition time with the latest data first). Order of R/L: L Æ R.
When the “72 I/F FORMAT” parameter is set to “SHORT”:
• Only KM median values are transmitted.
• When median values could not be obtained, only the latest KM measurement data is transmitted.
• Data (D: in diopter) is not transmitted.
KM measurement (center)
1) Left eye (mm) data
2) Left eye (D) data
3) Right eye (mm) data
4) Right eye (D) data
L07.9507.7117607.83
R/Lcode
(2) R1 (5) R2 (5) AXIS (3) AVE (5)
DL42.4543.7717643.11
R/Lcode
(2) R1 (5) R2 (5) AXIS (3) AVE (5)
-01.32
CYL (6)
R07.8607.5317507.70
R/Lcode
(2) R1 (5) R2 (5) AXIS (3) AVE (5)
DR42.9444.8217543.88
R/Lcode
(2) R1 (5) R2 (5) AXIS (3) AVE (5)
-01.88
CYL (6)

16
RS-232C COMMUNICATION: Data Format
KM peripheral measurement
When KM peripheral measurement is not performed, the data is not transmitted.
1) Left eye (mm) data
2) Left eye (D) data
3) Right eye (mm) data
4) Right eye (D) data
EL07.9807.9617407.97
R/Lcode
(2) R1 (5) R2 (5) AXIS (3) AVE (5)
HL42.2542.5017442.38
R/Lcode
(2) R1 (5) R2 (5) AXIS (3) AVE (5)
-00.25
CYL (6)
ER07.9307.9117507.92
R/Lcode
(2) R1 (5) R2 (5) AXIS (3) AVE (5)
HR42.5042.7517542.63
R/Lcode
(2) R1 (5) R2 (5) AXIS (3) AVE (5)
-00.25
CYL (6)

17
RS-232C COMMUNICATION: Data Format
2
12 Corneal size (CS) measurement
When the “72. I/F FORMAT” parameter is set to “SHORT”, the data is not transmitted.
1) Left eye data
2) Right eye data
13 Pupil size (PS) measurements
When the “72. I/F FORMAT” parameter is set to “SHORT”, the data is not transmitted.
1) Left eye data
2) Right eye data
“Target lamp” transfers the state of the target lamp during the PS measurement.
14 Checksum
When the “71. I/F MODE” parameter is set to “NCP10”, a checksum is added to the data for-
mat. It is added after “EOT” of each data format.
The checksum is represented by four hexadecimal digits. The value of the checksum is the
simple sum of “SOH” to “EOT” in the data format. However, the “CR” code is not included
into the calculation of the checksum when the “CR” code is added.
SL11.5
R/L code
(2) CS (4)
SR11 . 0
R/L code
(2) CS (4)
PL06.0 F
R/L code
(2) PS (4) Target
lamp (1)
PR06 . 0 N
R/L code
(2) PS (4) Target
lamp (1)
NTarget lamp ON
FTarget lamp OFF
SOH ・・・ ETB EOT 3 2 C F
Data Checksum (4)
CAUTION
• Set the “74. BIT LENGTH” parameter to 8.
When the parameter is set to 7, the codes that correspond to kana-characters are not
exported successfully.

18
RS-232C COMMUNICATION: Data Format
2.2.3 CR (Carriage Return) Code
When a personal computer is used as the external computer for receiving the data, it may be neces-
sary to add “CR” code to the end of data to be transmitted in one line. The ARK-530A/510A allows you
to select whether or not to add “CR” code to the end of data.
See Step 3 of “2.3.1. Interface between the ARK-530A/510A and external PC” (page 19)
The data to be transmitted when “CR” code is added:
1 RS command with “CR” code added
“CR” code is added to the end of a command statement.
2 Data with “CR” code (When the “71. I/F MODE” parameter is set to “NIDEK”)
“CR” code is added to the end of the “ETB” code and the end of data.
3 Data with “CR” code (When the “71. I/F MODE” parameter is set to “NCP10”)
“CR” code is added to the end of the “ETB” code and the end of data.
SOH C * * STX R S ETB EOT CR
0DH
SOH D R M STX Data ETB CR Data ETB CR Data
ETB CR EOT CR
SOH D R M STX Data ETB CR Data ETB CR Data
ETB CR EOT C1 C2 C3 C4 CR
Checksum