Grow GM66 User manual

GM66 Bar Code Reader Module
User Manual
Hangzhou Grow Technology Co., Ltd.
V1.3 May. 2018

1
Catalog
1. Introduction of Module.........................................................................................................................................3
1.1 Introduction.............................................................................................................................................. 3
1.2 Technical Specification.............................................................................................................................3
1.3 Dimension(mm)........................................................................................................................................2
Control Panel................................................................................................................................................ 2
Scan Area(testing in office (250 lux)........................................................................................................... 3
1.4 Setup Code................................................................................................................................................4
1.5 Appendix E：Save or Cancel...................................................................................................................4
1.6 Reset......................................................................................................................................................... 4
2 Communication interface..................................................................................................................................... 5
2.1 Series Communication Interface.............................................................................................................. 5
2.2 USB Interface........................................................................................................................................... 6
2.3 USB Virtual Serial Port............................................................................................................................ 6
3 Read Mode............................................................................................................................................................7
3.1 Continuous Mode..................................................................................................................................... 7
3.2 Induction Mode.........................................................................................................................................8
3.3 Manual Mode............................................................................................................................................9
3.4 Command Triggered Mode.................................................................................................................... 10
4 Lighting and Collimate....................................................................................................................................... 11
4.1 Lighting...................................................................................................................................................11
4.2 Collimation............................................................................................................................................. 11
5 Prompts............................................................................................................................................................... 12
5.1 Prompts Tone.......................................................................................................................................... 12
5.2 Decode successfully tone....................................................................................................................... 12
5.3 Decoding Prompt....................................................................................................................................13
5.4 Data code format.................................................................................................................................... 13
5.5 Keyboard Settlement.............................................................................................................................. 13
5.6 Image Flip...............................................................................................................................................14
6 Data Edition........................................................................................................................................................ 15
6.1 Prefix.......................................................................................................................................................15
6.2 Suffix...................................................................................................................................................... 16
6.3 CODE ID................................................................................................................................................ 16
6.4 Tail.......................................................................................................................................................... 19
6.5 Cut out Data............................................................................................................................................19
6.6 RF Information....................................................................................................................................... 21
7 Bar code type enables/disable configuration......................................................................................................22
7.1 All types of bar code can be decoded.....................................................................................................22
7.2 Bar code rotate........................................................................................................................................22
7.3 EAN13.................................................................................................................................................... 22
7.4 EAN8...................................................................................................................................................... 23

2
7.5 UPCA......................................................................................................................................................23
7.6 UPCE0.................................................................................................................................................... 23
7.7 UPCE1.................................................................................................................................................... 23
7.8 Code128..................................................................................................................................................23
7.9 Code39....................................................................................................................................................24
7.10 Code93....................................................................................................................................................24
7.11 CodeBar.................................................................................................................................................. 25
7.12 QR...........................................................................................................................................................26
7.13 Interleaved 2 of 5....................................................................................................................................26
7.14 Industrial 25............................................................................................................................................26
7.15 Matrix 2 of 5........................................................................................................................................... 27
7.16 Code11.................................................................................................................................................... 27
7.17 MSI......................................................................................................................................................... 28
7.18 RS............................................................................................................................................................29
7.19 DM..........................................................................................................................................................29
7.20 PDF417...................................................................................................................................................30
8 Serial Port Instruction.........................................................................................................................................31
8.1CRC Algorithm..............................................................................................................................................31
8.2 Read Zone Bit.........................................................................................................................................32
8.3 Write Zone Bit........................................................................................................................................ 33
8.4 Save zone bit to EEPROM Command................................................................................................... 34
8.5 List of zone bit........................................................................................................................................34
9 Appendix A：Common serial port instruction.................................................................................................. 48
10 Appendix B：Code ID List................................................................................................................................49
11 Appendix C：ASCII.......................................................................................................................................... 50
12 Appendix D：data code..................................................................................................................................... 55

3
1. Introduction of Module
1.1 Introduction
MG66 Bar code reader module is a high performance
scanner, can read 1D bar code easily and read 2D bar code with
high speed. It also wins high scan speed for linear code, even for
bar code on paper or screen.
MG66 bar code reader module is an advanced bar code
decoding algorithm which developed on image recognition
algorithm, can easily and accurately read bar code, simplify
secondary development.
MG66 works stable in dark and large temperature range.
1.2 Technical Specification
Default scan mode
Continuous scan
Read code time for once
3s
Parameter：0.1-25.5s; step-size: 0.1s; 0
means no time limited
Reading interval
1S
Parameter：0.1-25.5s; step-size: 0.1s; 0
means no time limited
Output
GBK
GBK、UNICODE、BIG5
Interface
USB
USB 、UART、USB VCom
Interface
( TTL-232)
Serial Baud Rate
9600
adjustable，details at 2.1
Verification
N
Data bit
8
Stop bit
1
CTSRTS
No
serial mode
Read code time
for once
5s
Parameter：0.1-25.5s; step-size: 0.1s; 0
means no time limited

1
Electrical specification:
1
Operating Voltage
DC 4.2 - 6.0V
2
Standby Current
30mA
3
Operating Current
160mA
4
Sleep Current
3mA
Running characteristic
1
Light
White light
2
Capture light
Red
3
Scan Angle
Roll:0-360°, Pitch:±65°, Yaw:±60°
4
Resolution
648x 488
5
Scanning angle
35°（Inclination）, 28°（Elevation）

2
1.3 Dimension(mm)
Control Panel

3
Scan Area (testing in office (250 lux)
Type of Bar
Code
Density
Min.
distance
Max. distance
Code 39
0.125 mm
(5 mils)
4.0 cm
9.0 cm
0.375 mm
(15 mils)
4.0 cm
25.0cm
UPC/EAN
0.375 mm
(15 mils)
4.0 cm
25.0cm
Code93
0.254 mm
(10 mils)
4.0 cm
21.0cm

4
1.4 Setup Code
Customer can set module by scan setup code.
Default: setup code on Off
Output details in setup code
Default: Not output Output
1.5 Save and Cancel
Scan cancel code to cancel wrong read date.
Save Cancel last byte
Cancel all read bytes Cancel changes
1.6 Reset
Back to Factory Setting by scan follow code.
Reset

5
2 Communication interface
GM66 can receive database, control module and set functional parameter by TTL - 232.
2.1 Series Communication Interface
It’s default and common to connect module and mainframe(such as PC, POS) by series
communication interface. Make sure communication parameter for module and mainframe are same,
then it will communicate smooth and correctly.
Series Output
TTL-232 is used for series interface which suitable for most system. Required change-over circuit
for RS-232.
Default Parameter as formForm 2- 1. Only Baud Rate can be changed.
Form 2- 1 Default Parameters
Parameters
Default
Series communication interface
Standard TTL-232
Baud rate
9600
Verification
N
Data bit
8
Stop bit
1
CTSRTS
N
Baud Rate Settlement
1200bps 4800bps 9600bps(Default)
14400bps 19200bps

6
38400bps 57600bps 115200bps
2.2 USB Interface
Scan the following code to become standard keyboard input pattern when module connects PC by
USB.
USB PC Keyboard
2.3 USB Virtual Serial Port
Scan the following code to become virtual serial port output pattern when module connects PC by
USB.
USB Virtual serial port

7
3 Read Mode
3.1 Continuous Mode
On this mode, reading module read code continuous and automatic.
Break after reading one code, break time is changeable.
Click the toggle key to pause. Then click to continuous cyclic read code.
Default Continuous Mode
Time settlement for single read
The longest time before first successful reading. After this time, module will be into no read time.
Single Read time: 0.1~25.5 s, step-size: 0.1s;
0 means infinite time interval.
Default time: 5s
1000ms default 3000ms
5000ms infinite time interval
Break time settlement
Time between two read. Can be settled from 1 to 25.5 s, step-size: 0.1s; default 1.0s
No break 500ms default 1000ms

8
1500ms 2000ms
3.2 Induction Mode
After setting, module begins to monitor brightness immediately. When scene changed, module will
begin to read until time of image stabilization over.
After first successful reading or single reading time out, module will monitor brightness again after
some time (changeable)
Module will cycle working as above when follow happen: module can’t find code between single
read time, then it will stop reading and jump to monitor brightness.
On induction mode, module can begin reading code by click, and it will begin to monitor brightness
when release toggle key or successfully output information.
Induction Mode
Time settlement for single read
The longest time read before first successful reading. After this time, module will be into no read
time.
Single Read time: 0.1~25.5 s, step-size: 0.1s;
0 means infinite time interval.
Default time: 5s
1000ms 3000ms
Default 5000ms infinite time interval

9
Break time settlement
After one successful output or time out for single read. Module will be into monitor after some time.
Time from 0 to 25.5 s, step-size: 0.1s; default 1.0s
No Break 500ms Default 1000ms
1500ms 2000ms
Image stabilization time
Image stabilization time: the time cost after module find scene change then waiting for the scene
stable. Time from 0s to 25.5s, step size 0.1s. Default 0.4s.
100ms Default 400ms
1000ms 2000ms
3.3 Manual Mode
Manual mode is default mode. Click toggle key begin to read, stop when output or release toggle
key
Manual Mode
Into sleep mode after not work for a while, can be settled by following code.

10
Sleep mode on Sleep mode off
Default: come into sleep mode after 30s free. Wake up by key. Module will restart after dropping out
sleep mode.
3.4 Command Triggered Mode
Module begins to read when receive scan command from mainframe( bit0 of zone bit 0x0002
writes”1”) , and stop at output or read timeout.
Command triggered mode
Under command triggered mode, command for serial port trigger is 7E 00 08 01 00 02 01 AB CD;
After receiving command, model will output “ 02 00 00 01 00 33 31” and start scan.
Time settlement for single read
Read and Scan time before output. From 0.1s to 25.5s, step size 0.1s. 0 : infinite time interval;
Default: 5s
1000ms 3000ms
Default 5000ms infinite time interval

11
4 Lighting and Collimate
4.1 Lighting
Head lamp is used to additional lighting when read.
Normal(default): Head lamp will be on when read, others off.
Normally on: always on after boot.
OFF: head lamp is always off
Normal Normally on Off
4.2 Collimation
There will be a pointing light beam which can help user to find best distance.
Normal(default): pointing light beam shows when read
Normally on: pointing light beam shows after power on until power off
No Collimation: no pointing light beam
Normal(default) Normally on No Collimation

12
5 Prompts
5.1 Prompts Tone
Sound of buzzer
UP Down
Silence：Close all prompt tones
Silence on Silence off
5.2 Read code successfully tone
Default on Close read code successfully tone
Duration time setting. Default: 60ms
30ms 60ms
90ms 120ms

13
5.3 Decoding Prompt
Output Decoding Prompt: F- read unsuccessfully; S- successful
Default no decoding prompt output Output
5.4 Data code format
Read following to print Chinese data according to specified code forma.
GBK format: notepad, UNICODE format: WORD and input box for chat tools,
BIG5 format: Chinese Traditional
GBK UNICODE
BIG5
5.5 Keyboard Settlement
Scan following code to change keyboard.
Default Keyboard- US Czech France

14
Germany Hungary Italy
Japan Spain
5.6 Image Flip
When meet flipped or mirror image, like:
Scan code into or exit image flip mode
image flip mode Exit
PS: in the image flip mode can only scan flipped image. For normal, should exit.

15
6 Data Edition
Sometimes we need to edit the data before output to make data separation and processing more
easily.
Data edition include:
Add Prefix
Add Suffix
Cut data
Output CodeID
Output “RF” when fail to decode
Add End words”Tail”
Output sequence after data edition:
【Prefix】【CodeID】【Data】【Suffix】【Tail】
6.1 Prefix
Add prefix
Prefix is on the head of encoding Information , and can be self-defined.
Scan the code to add prefix.
Allow to add prefix Default no prefix
Change prefix
Scan “change prefix” and “setup code” code to change prefix.
Use 2 base 16 to express each character.
Max 15 characters.
ASCII on appendix C.
change prefix

16
E.G. Change prefix to “DATA”
1. ”DTAT” in base 16: “44”, “41”, “54”, “41”
2. Confirm open the “ setup code”, if not, find on 1.4
3. Scan “change prefix” code
4. Successively scan “Code ID”: “4”, “4”, “4”, “1”, “5”, “4”, “4”, “1”
6.2 Suffix
Add Suffix
Suffix on the end of encoding Information, and can be self-defined.
Allow add suffix Default no suffix
Change suffix
Scan “ change suffix” and “setup code” code to change prefix.
Use base 16 to express each character.
Max 15 characters. ASCII on appendix C.
Change Suffix
E.G.: Change suffix to “DATA”
1. “DTAT” in base 16: “44”, “41”, “54”, “41”
2.Confirm opening the “setup code”, if not, find on 1.4
3.Scan “change suffix” code
4.Successively scan “Code ID”: “4”, “4”, “4”, “1”, “5”, “4”, “4”, “1”
5.Scan “save” code
6.3 CODE ID
Add CODE ID
Users can identify different types of bar code by CODE ID. CODE ID use one character to
identify and can be self- defined.