Nidek Medical RT-3100 User manual

INTERFACE MANUAL
INTERFACE MANUAL
October 2015
Pages in total: 30
MRT11*RTZ001D/E
RT-3100
RT-3100
REFRACTOR
REFRACTOR

NIDEK CO., LTD. : 34-14, Maehama, Hiroishi 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 INC. : 47651 Westinghouse Drive, Fremont, CA 94539, U.S.A
(United States Agent) Telephone: [phone]
Facsimile: [phone]
NIDEK S.A. : Europarc, 13 rue Auguste Perret, 94042 Créteil, FRANCE
(EU Authorized Representative) Telephone: [phone]
Facsimile: [phone]

Table of Contents
§
1OUTLINE ..................................................................................................................... 1-1
1.1 Basic Interface Specifications ................................................................................. 1-1
1.2 Connector Signal Configuration.............................................................................. 1-2
§
2COMMUNICATION SEQUENCE ............................................................................ 2-1
§
3DATA TRANSMISSION FROM THE RT TO THE PC .......................................... 3-1
3.1 Output of Refraction Data ....................................................................................... 3-1
3.2 Output Condition of Refraction Data ...................................................................... 3-2
§
4DATA FORMAT (THE RT TO THE PC) .................................................................... 4-1
4.1 Heading .................................................................................................................... 4-1
4.2 Data Source .............................................................................................................. 4-1
4.3 Text Data Format of Each Data Source ...................................................................... 4-2
4.3.1 LM data .......................................................................................................... 4-2
4.3.2 RM(AR) data .................................................................................................. 4-2
4.3.3 RT data ............................................................................................................ 4-3
4.3.4 KM data .......................................................................................................... 4-5
4.3.5 NT data ........................................................................................................... 4-5
4.4 Format of Each Data ................................................................................................. 4-6
4.4.1 SCA data .......................................................................................................... 4-6
4.4.2 ADD data ......................................................................................................... 4-6
4.4.3 Visual acuity data ............................................................................................. 4-7
4.4.4 Prism data ........................................................................................................ 4-9
4.4.5 PD data ........................................................................................................... 4-9
4.4.6 Working distance (WD) data ......................................................................... 4-13
4.4.17 KM data ...................................................................................................... 4-14
4.4.18 NT data ....................................................................................................... 4-15
§
5DATA TRANSMISSION FROM THE PC TO THE RT .......................................... 5-1
§
6DATA FORMAT (THE PC TO THE RT) .................................................................... 6-1
6.1 Format of Each Block ............................................................................................... 6-1
6.2 Format of Each Item of Data ..................................................................................... 6-4
§
7COMMUNICATION BETWEEN THE RT AND THE PC ....................................... 7-1
§
8SAMPLE PROGRAMS FOR COMMUNICATION ................................................. 8-1
8.1 Flow Chart at Data Reception ................................................................................... 8-1
8.2 Flow Chart at Data Transmission ............................................................................... 8-2
8.3 PC Sample Program .................................................................................................. 8-3
Page

§1
OUTLINE
Interface specifications for communication between the RT-3100 and personal computer
or external appliances are stated herein.
1.1 Basic Interface Specifications
(1) When the parameter “Communication Sequence for PC” is “Type 1”
1) Basic spec. : Corresponding to RS-232C
2) Connector : DIN 8-pin
3) Synchronous : Asynchronous
4) Line : Half duplex
5) Baud rate : 2400 bit/sec.
6) Bit length : 7 bit
7) Parity check : Even parity
8) Stop bit : 2 bit
9) Datacode : ASCII
10) CR code : Yes
(2) When the parameter “Communication Sequence for PC” is “Type 2”
1) Basic spec. : Corresponding to RS-232C
2) Connector : DIN 8-pin
3) Synchronous : Asynchronous
4) Line : Halfduplex
5) Baud rate : 9600 bit/sec.
6) Bitlength : 8 bit
7) Parity check : Odd parity
8) Stop bit : 1 bit
9) Datacode : ASCII
10) CR code : Yes
* Depending on the program version, the parameter “Communication Sequence for PC” is not
provided. In such a case, the interface specifications of (1) are applied.

1 - 2
1.2 Connector Signal Configuration
Connect the connector for the external computer of the RT-3100 (PC port) with the external computer
serial communication port (RS-232C port) of the external computer with the Interface Cable OPIF-
11.
A converter is required when the connector on the external computer side is different from the
D-sub 9 pin.
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D-sub 9P
(female)
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External
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Connector for
external
computer of
RT-3100

§2
COMMUNICATION SEQUENCE
Transmitter side
(RT-3100)
Receiver side
(PC)
T
Before transmitting data, the receiver is informed that the transmitter is “Enabled”.
(High on the cable)
The transmitter confirms that the receiver is “Enabled”. (High on the cable)
Thedataistransmitted.
* When the parameter “Communication Sequence for PC” is “Type2” and the data is output
fromtheRT-3100tothecomputer,thedatatransmissionof aboveisimmediatelyexecuted
withoutthe DTR/DSR control of and .
T: Time out
T > 1 sec. when “I/F Mode” is “NIDEK”
T > 4 sec. when “I/F Mode” is “NIDEK2”

2 - 2
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§3
DATA TRANSMISSION FROM THE RT TO THE PC
By pressing the Print switch on the control box, all measured data can be transmitted to the external
appliance such as a personal computer. Any selected data among Unaided , LM , AR , Subj and
Final can also be transmitted at random.
3.1 Output of Refraction Data
The following data are transmitted in sequence.
Unaided measurement data
↓
Lensometry data
↓
Objective data
↓
Subjective data
↓
Final prescription data
↓
Working distance (WD) data
↓
KM data
↓
NT data

3 - 2
3.2 Output Condition of Refraction Data
• An item with no data cannot be transmitted.
• Only Far vision data of the Lensometry data and the Objective data (without ADD and
PRISM values) are transmitted.
Otherwise, both Far and Near vision data are transmitted.

§4
DATA FORMAT (THE RT TO THE PC)
4.1 Heading
(1) When the ID No. parameter is set to “Standard”
SH NIDEK_RT-5100_ IDΔΔΔΔΔΔΔΔΔΔΔΔDAYYYY/MM/DD_SN CR
Company Name : NIDEK (5 letters)
Model : RT-3100 (7 letters)
ID No. : ΔΔΔ.....Δ(12 figures)1
Data of Measurement : YYYY(Year) (4 figures)
MM (Month) (2 figures)
DD (Day) (2 figures)
System No. : (2 figures) (1 to 10: Space if tens digit is zero)
“_” indicates a space.
(2) When the ID No. parameter is set to “Extended”
SH NIDEK_RT-3100 CR
SX IDΔΔΔΔ.....ΔCR
SX DAYYYY/MM/DD_SN CR
Company Name : NIDEK (5 letters)
Model : RT-3100 (7 letters)
ID No. : ΔΔΔ.....Δ(4 to 20 figures)
Data of Measurement : YYYY(Year) (4 figures)
MM (Month) (2 figures)
DD (Day) (2 figures)
System No. : (2 figures) (1 to 10: Space if tens digit is zero)
“_” indicates a space.
1 Only figures can be input with the RT.

4 - 2
4.2 Data Source
SX @ CR
LM : Lensmeter (Lensometry data)
RM : Autorefractometer (Objective data)
RT : Refractor (Unaided, subjective and final prescription
data)
KM : Keratometer
NT : Tonometer (Intraocular pressure data)
4.3 Text Data Format of Each Data Source
1 2 3
SX CR
Measured data
Patient’s eye or equivalent
Far vision : R = Right eye, L = Left eye, B = Binocular,
D = PD, V = DV/CV
Near vision : r =Right eye, l = Left eye, b = Binocular, d = PD,
v = DV/DC
Description of data

4 - 3
4.3.1 LM data
1 2 3
SCA SPH :6 CYL : 6 AXIS : 3
ADD A ADD : 6
Corrected visual acuity V VA: 5
PRISM P H-prism : 6 V-prism : 6
PD value P D PD : 4 Space : 8
or
P D PD Bino : 4 Right : 4 Left : 4
4.3.2 RM (AR) data
12 3
Objective SCA O SPH : 6 CYL : 6 AXIS : 3
Corrected visual acuity V VA : 5
PD value P D PD : 4 Space : 8
or
P D PD Bino : 4 Right : 4 Left : 4
4.3.3 RT data
(a) Unaided visual acuity data
123
Unaided visual acuity W VA : 5
(b) Subjective data
123
Far vision SCA f SPH : 6 CYL : 6 AXIS : 3
Near vision SCA n SPH : 6 CYL : 6 AXIS : 3
ADD a ADD : 6
Corrected visual acuity v VA : 5
PRISM p H-prism : 6 V-prism : 6
PD value p D PD : 4 Space : 8
or
p D PD Bino : 4 Right : 4 Left : 4
(c) Final prescription data
123
Far vision SCA F SPH : 6 CYL : 6 AXIS : 3
Near vision SCA N SPH : 6 CYL : 6 AXIS : 3
ADD A ADD : 6
Corrected visual acuity V VA : 5
PRISM P H-prism : 6 V-prism : 6
PD value P D PD : 4 Space : 8
or
P D PD Bino : 4 Right : 4 Left : 4
*

4 - 4
(d) Working distance (WD) data
123
W D Working distance data : 2
4.3.4 KM data
(a) mm data
123
R1, R2, AXIS C R1 : 5 R2 : 5 AXIS : 3
(b) D data
123
R1, R2 D R1 : 5 R2 : 5
4.3.5 NT data
(a) mm Hg data
123
T mmHg (4)
(b) kPa data
123
t kPa (4)

4 - 5
4.4 Format of Each Data
4.4.1 SCA data
SX SPH : 6 CYL : 6 AXIS : 3 CR
(a) SPH data
BYTE 1 2 3 4 5 6
Contents Polarity D1 D2 Point D3 D4
Polarity : +, –, space (when the data is 0.00)
D1 : Tens place digit (Space if it is zero)
D2 : Ones place digit
Point : “ . ”(Decimal point)
D3 : First place after the decimal point
D4 : Second place after the decimal point
(b) CYL data
The same as “(a) SPH”
(c) AXIS data
BYTE 1 2 3
Contents D1 D2 D3
D1 : Hundreds place digit (A space is entered when of “ 0 ”.)
D2 : Tens place digit (A space is entered when of D1=D2=0.)
D3 : Ones place digit
4.4.2 ADD data 6BYTE
The same as “4.4.1 SCA data (a) SPH”

4 - 6
4.4.3 Visual acuity data
SX VA : 5 CR
Unaided visual acuity = W, Corrected visual acuity = V
(a) Decimal point display data
BYTE 1 2345
Contents Compare D1 Point D2 D3
Compare : When a patient could not see the largest figure on the chart, “ > ” ,
“ < ” or “ - ”(Only Log MAR data) ; otherwise : “space”
D1 : Ones place digit
Point : “ . ” (Decimal point)
D2 : First place after the decimal point
D3 : Second place after the decimal point (A space is entered when of “ 0 ”.)
(b) Fractional number display data
BYTE 1 2 3 4 5
Contents Compare D1 D2 D3 Space
Compare :Same as “(a) Decimal point display”
D1 :Hundreds place digit (Space if it is zero)
D2 :Tens place digit (Space if D1and D2 are zero)
D3 :Ones place digit

4 - 7
4.4.4 Prism data
SX H-prism : 6 V-prism : 6 CR
(a) H-prism data
BYTE 1 2 3 4 5 6
Contents Polarity D1 D2 Point D3 D4
Polarity : IN = “I ”
OUT = “ O ”
A space is entered when the data is “0.00 ”.
Otherwise the same as “4.4.1 SCA data (a) SPH”.
(b) V-prism data
BYTE 1 2 3 4 5 6
Contents Polarity D1 D2 Point D3 D4
Polarity :UP = “ U ”
DOWN = “ D ”
A space is entered when the data is “0.00 ”.
Otherwise the same as “(a) H-prism”.
4.4.5 PD data
SX PD : 4 Space : 8 CR
or SX PD Bino : 4 Right : 4 Left : 4 CR (Binocular) (Right) (Left)
BYTE 1 2 3 4
Contents D1 D2 Point D3
D1 : Tens place digit
D2 : Ones place digit
Point : “ . ” (Decimal point)
D3 : First place after the decimal point

4 - 8
4.4.6 Working distance (WD) data
SX WD data : 2 CR
BYTE 1 2
Contents D1 D2
D1 : Tens place (10cm) digit
D2 : Ones place (1cm) digit
4.4.7 KM data
(a) mm data
SX R1 : 5 R2 : 5 AXIS : 3 CR
(b) D data
SX R1 : 5 R2 : 5 CR
R1
BYTE 1 2 3 4 5
Contents D1 D2 Point D3 D4
D1 : Tens place digit (Space if it is zero)
D2 : Ones place digit
Point : “ . ” (Decimal point)
D3 : First place after the decimal point
D4 : Second place after the decimal point
R2 Same as “(b) R1”
AXIS Same as “4.4.1 SCA data (c) AXIS”

4 - 9
4.4.8 NT data
(a) mmHg data
SX mmHg (4) CR
BYTE 1 2 3 4
Contents D1 D2 Point D3
D1 : Tens place digit (Space if it is zero)
D2 : Ones place digit
Point : “ . ” (Decimal point)
D3 : First place after the decimal point
(b) kPa data
SX kPa (4) CR
BYTE 1 2 3 4
Contents D1 Point D2 D3
D1 : Ones place digit
Point : “ . ” (Decimal point)
D2 : First place after the decimal point
D3 : Second place after the decimal point

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