GLOBALSAT R680 User Manual

TR-203

Development Document

Version 1.9_101231

Globalsat Technology Corporation

16F., No. 186, Jian-Yi Road, Chung-Ho City, Taipei Hsien 235, Taiwan

Tel: [phone]/ Fax: [phone]

E-mail: [e-mail]

Website: www.globalsat.com.tw

CONTENT

1 Introduction...................................................................................................................................3

2 Protocol Summary.........................................................................................................................4

2.1 General Format...................................................................................................................4

2.2 Setup Format......................................................................................................................5

2.2.1 Server -> Device .....................................................................................................5

2.2.2 Device -> Server .....................................................................................................5

2.3 Geo-fence Format...............................................................................................................5

2.3.1 Server -> Device .....................................................................................................5

2.3.2 Device -> Server .....................................................................................................5

2.3.3 Geo-fence area definition format............................................................................6

2.4 Command Format...............................................................................................................6

2.5 Report Messages Format....................................................................................................7

2.6 Parameters of Report Messages.........................................................................................8

2.7 Configuration Parameters.................................................................................................11

2.8 Command’s Codeword.....................................................................................................24

2.9 Report Media....................................................................................................................26

2.10 Checksum.......................................................................................................................28

3 Configuration ..............................................................................................................................29

3.1 Read parameters of configuration....................................................................................29

3.2 Set parameters of configuration.......................................................................................30

4 GSM & GPRS.............................................................................................................................32

4.1 GSM & GPRS Setting......................................................................................................32

4.2 Acknowledgement............................................................................................................33

4.2.1 Receive Acknowledgement from Server...............................................................34

4.2.2 Respond Acknowledgement to Server ..................................................................35

5 GPS .............................................................................................................................................37

6 Tracking.......................................................................................................................................40

6.1 Ping ..................................................................................................................................40

6.2 Periodic Mode..................................................................................................................42

6.3 On-Line Mode..................................................................................................................44

6.4 Motion Mode....................................................................................................................47

7. Alert............................................................................................................................................51

7.1 Parking Mode...................................................................................................................51

7.1.1 Enter Parking Alert................................................................................................53

7.1.2 Dismiss Parking Alarm .........................................................................................54

7.1.3 Stop Parking Mode................................................................................................55

1

7.2 Sleeping Mode .................................................................................................................57

7.2.1 Enter Sleeping Alert..............................................................................................58

7.2.2 Dismiss Sleeping Alarm........................................................................................59

7.2.3 Stop Sleeping Mode..............................................................................................60

7.3 Speed Limits.....................................................................................................................62

7.3.1 Enable Speed Limit Alert......................................................................................63

7.3.2 Disable Speed Limit Alert.....................................................................................65

7.4 Geo-fence.........................................................................................................................67

7.4.1 Setup Geo-fence....................................................................................................67

7.4.2 Enter Geo-fence Alert...........................................................................................74

7.4.3 Dismiss Geo-fence Alarm .....................................................................................75

7.4.4 Stop Geo-fence Alert.............................................................................................75

8 Emergency...................................................................................................................................77

9 Voice Monitor..............................................................................................................................78

10 Timer.........................................................................................................................................80

10.1 Timer 0...........................................................................................................................80

10.2 Timer 1~3.......................................................................................................................80

11 Report Messages .......................................................................................................................82

11.1 Format 0 of Report Messages.........................................................................................82

11.2 Format 1 of Report Messages.........................................................................................83

12 Data Log....................................................................................................................................85

13 Buffer Storage...........................................................................................................................88

14 Cell ID.......................................................................................................................................89

15 Simple Command......................................................................................................................90

2

1 Introduction

TR-203 is a tracker that can track the location of the elderly, children, pets, and
vehicles.
It can apply for fleet management, looking for lost children, elderly care, and
lost pets.

This document describes the communication protocol between TR-203 tracker
and server, the built-in behavior modes of TR-203, and the function of each
parameter.

It can help system integration developer to develop back-end system in the
shortest time.

3

2 Protocol Summary

2.1 General Format

GSx,IMEI,[T,S,]Field1,Field2,……,FieldN*Checksum!

Format Description Note

GSx ”GSS” :Write setting

”GSs” :Report setting
”GSG” :Write Geo-fence parameter
”GSg” :Report Geo-fence parameter
”GSC” :Action command
”GSr” :Position and status report (format 0)
”GSh” :Position and status report (format 1)

IMEI (The IMEI number) GSM device ID

T ‘0’ : Middle of message

‘1’ : Start of message
‘2’ : End of message
‘3’ : Start and End of message, i.e., only one
packet for message

S ‘0’,’1’,’2’,’3’,…,’9’,’10’,’11’,…,’99’ Sequence number

Field Field1 ~ FieldN Refer to “TR-203

Command head

Message packet
control

configure
parameters” for
detail definition

* * End of field

Checksum The checksum value is derived by the same

method of NMEA standard. It is calculated by
‘exclusive OR’ the 8 data bits of each character
before “*” in the sentence, but excluding “*”.
The hexadecimal value of the most significant
and least significant 4 bits of the result are
converted to two ASCII characters (0-9, A-F) for
transmission. The most significant character is
transmitted first.

! ! Message delimiter

4

2.2 Setup Format

2.2.1 Server -> Device

GSS,IMEI,T,S,x1=y1,x2=y2,x3=y3,……………………*Check Sum!

x1,x2,x3… are code words for configuration parameters.
y1,y2,y3… are their respective settings.

2.2.2 Device -> Server

GSs,IMEI,T,S,x1=y1,x2=y2,x3=y3,…………………….*Check Sum!

2.3 Geo-fence Format

2.3.1 Server -> Device

GSG,IMEI,T,S,1=(type,upper_left_Lon,upper_left_Lat,right_bottom_Lon,righ
t_bottom_Lat[,gxxx][,startTime,endTime,weekday]),2=(…),3=(…),…*Check
sum!

2.3.2 Device -> Server

GSg,IMEI,T,S,1=(type,upper_left_Lon,upper_left_Lat,right_bottom_Lon,righ
t_bottom_Lat[,gxxx][,startTime,endTime,weekday]),2=(…),3=(…),…*Check
sum!

5

2.3.3 Geo-fence area definition format

(type,upper_left_Lon,upper_left_Lat,right_bottom_Lon,right_bott
om_Lat[,gxxx][,startTime,endTime,weekday])

type 1=get in area

2=get out of area
3=cross over the boundary
4=stay in area

5=stay out of area
upper_left_Lon,upper_left_L
at,right_bottom_Lon,right_b
ottom_Lat
gxxx Optional field for describing this

startTime,endTime,weekday Optional field which specify the

Coordinate of specified area

area belong to area group xxx.

effective time frame of this

geo-fence area. startTime and

endTime are in seconds. Weekday

is in hex-digit format which

specifies applicable day in a week,

where bit 0 represents Sunday,

bit1 represents Monday, etc.

2.4 Command Format

GSC,IMEI,c1(option1),c2(option2),……….*checksum!

c1,c2…are code words of commands.

option1, option2… are their respective parameters. Please refer to 2.7.

6

2.5 Report Messages Format

There are two types of report message format, “format 0” and “format 1”.
(Refer to “11. Report” for detail definition)

Example:

TR-203 -> Server (format 0)
GSr,IMEI,Device_Mode,Report_Type,Alarm_Status,Geofence_st
atus,GPS_Fix,UTC_Date,UTC_Time,Longitude,Latitude,Altitude
,Speed,Heading,Number_of_Satellites,HDOP,Battery_capacity*
checksum!

TR-203 -> Server (format 1)
GSh, IMEI,Alarm_Status,GPS_Fix,Battery_capacity*checksum!

7

2.6 Parameters of Report Messages

Parameters of Report Message

Codeword Parameters Description

A GPS fixing mode 1=not fix

2=2D fix

3=3D fix

B UTC Date, Time ddmmyy,hhmmss
C Local Date, Time ddmmyy,hhmmss

1 Longitude (E or W)ddd.dddddd
2 Longitude (E or W)dddmm.mmmm
3 Longitude (+ or -)ddddddddd

unit: 0.000001 degree

6 Latitude (N or S)dd.dddddd
7 Latitude (N or S)ddmm.mmmm
8 Latitude (+ or -)dddddddd

unit: 0.000001 degree

G Altitude xxxxx.x

Unit: meter

H Speed xxx.xx

unit: knots (1.852km/hr)

I Speed xxx

unit: km/hr

J Speed xxx

unit: mile/hr

K Heading xxx

unit: degree

L Number of satellite in use xx
M HDOP xx.x
N Battery capacity xx

unit: percent capacity

O Operation mode 1=Sleeping

2=Periodic

3=On-line

4=Motion

8

6=Parking

7=Standby

8=Off

P Alarm status xx(hex digits)

bit0=SOS alarm

bit1=Parking alarm

bit2=Sleeping alarm

bit4=Geo-fence alarm

bit5=Speed alarm

bit7=Battery low alarm

Z Geo-fence status Empty field: no geo-fence alarm

Ixxx: get in area xxx

Oxxx: get out area xxx

IGxxx: get in group xxx

OGxxx: get out group xxx

Q Report Media xx(hex digits)

bit0=SMS

bit1=TCP

bit2=UDP

bit6=Acton[0]

bit7=Action[1]

Action=00: report format 0

Action=01: report format 1

Action=10: GPS on

Action=11:

R Report type 1=Ping report

2=Periodic mode report

3=On-line mode report

4=Motion mode static report

5=Motion mode moving report

6=Motion mode static to moving report

7=Motion mode moving to static report

C=Parking mode report

D=Parking mode alarm report

E=Sleeping mode report

9

F=Sleeping mode alarm report

G=Geo-fence alarm report

H=Autonomous Geo-fence alarm report

I=SOS alarm report

J=Low battery alarm report

K=Speed alarm report

L=Timer 0 report

M=Timer 1 report

N=Timer 2 report

O=Timer 3 report

P=L4 report

S IMEI
T Device ID
U Checksum The checksum value is derived by the

same method of NMEA standard. It is

calculated by ‘exclusive OR’ the 8 data

bits of each character before “*” in the

sentence, but excluding “*”. The

hexadecimal value of the most significant

and least significant 4 bits of the result

are converted to two ASCII characters

(0-9, A-F) for transmission. The most

significant character is transmitted first.

p Temperature degree Celsius

#

*

?

! ! Message delimiter

10

2.7 Configuration Parameters

Most behaviors of TR-203 could be changed by Configuration Parameters. You
could change the setting of configuration parameters by the following methods.

1. Connect TR-203 to personal computer via USB cable and then set the
configuration parameters by “TR203 Config Tool.”

2. Send the “GSS,….!” setting with the configuration parameters to TR-203

3. Send the “GSC,….!” command with the configuration parameters to TR-203

All the settings or commands could be sent by SMS or TCP or UDP.
You could also send L1 command to read the present setting of TR-203.

Configure Parameters

Main

Device

SIM

Code

Parameters Type Description

words

O5 Device ID char(16)
O7 Firmware Version char(28) Read only

O6 Time Zone Offset

Power on operating

O4

mode

B0 PIN code char(4)

Phone number of SIM

B1

card

s32, in

-43200 ~ 46800

seconds

1=Sleeping
2=Periodic
3=On-line

u8

4=Motion
6=Parking
7=Standby

char(20)

Vibrator

B2 IMEI number char(16) Read only

I2

Enable/ disable TR-203
to vibrate after
pressing SOS key

1/0

11

0=disable
1=enable

J0

The power capacity for
sending out battery
low alarm report

u8,

15 ~ 100

percent

Battery

J1

J6

J7

J8

The power capacity for
power off TR-203

Battery low alarm
report Media

The power capacity for
clear battery low alarm
flag
Enable/disable TR-203
to automatically power
on when power
capacity is charged to

u8,

10 ~ 100

percent

bit0=SMS
bit1=TCP
bit2=UDP
bit6=Action[0]
bit7=Action[1]

Media type

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

u8,

10 ~ 100

percent

0=disable

1/0

1=enable

Data logger

O2 Data logger interval

OH Data logger distance

O1

Other setting

O3 Report format 0 char(32) Default=SORPZAB27GHKLMN*U!

ON Report format 1 char(32) Default=SARN*U!

OG

O8 Enable/ disable TR-203 1/0 Default=0.

the capacity of J1

Motion sensor
sensitivity

Enable/ disable data
buffer function

u16, in
seconds

u32, in
meters

0 ~ 65535
0=disable

0 ~ 4Giga
0=disable

u16 0 ~ 100

1/0 Default=1

12

to report “cell ID” if it

The report format will

does not get GPS fix

automatically switch from format
0 to format 2 when TR-203 does
not get GPS fix.
bit1=TCP
bit2=UDP
bit6=Action[0]

OO

Report media for

Media type

reading configuration

bit7=Action[1]
Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

0=disable
1=enable

C0 GPS always on 1/0

Applicable to all modes except
Sleeping and Off mode

The time for starting to

GPS

GPS

C1

C2

C3

C7

get GPS fix before the
next report time if
TR-203 does not get
GPS fix in last report,
or got GPS fix for 1
hour ago
The time for starting to
get GPS fix before the
next report time if
TR-203 got GPS fix
within 1 hour
GPS fix time before
sending out the first
report

Choose to use C8 or
C9+CA

u16, in
seconds

u16, in
seconds

u16, in
seconds

1/0

60 ~ 600

Note: TR-203 will send out the
report whether it gets GPS fix or
not when C1 time ends.

10 ~ 120

Note: TR-203 will send out the
report whether it gets GPS fix or
not when C2 time ends.

0 ~ 600
If "C3"=0, disable first report
message.
0=use C8
1=use C9+CA
Applicable for standby, periodic
and on-line mode

Interval for starting to

u16, in

0 ~ 65535

C8

get GPS fix

seconds

13

Applicable if C7=0

C9

Interval for starting to
get GPS fix when
speed is lower than 10
KM/H

u16, in

0 ~ 65535
Applicable if C7=1 and speed<10

seconds

Km/H
0 ~ 4Giga

Applicable if C7=1 and

CA

D1 APN char(32)
D2 User Name char(32)
D3 Password char(32)
D4 DNS 1 char(32)
D5 DNS 2 char(32)

D8

Communication

GPRS

OR

Interval for starting to
get GPS fix when
speed is higher than
10 KM/H

GPRS mode for L4
command
Shortly click SOS key
to make TR-203
connect to server

u32

Media type

1/0

speed>=10 Km/H
You have to take the value to
divide the speed to get the
interval. For example, if you set
the value as 54000 and the speed
is 60 KM/H. The interval will be
54000/60=900 seconds

02=TCP
04=UDP

0=disable
1=enable

SMS

E0

char(32)

name 1

E1 Host Port number 1 u16

Host IP or domain

Host IP or domain

E2

char(32)

name 2

E3 Host Port number 2 u16
E9 GSM operating band u8

SMS return phone

F0

char(20)

number

14

0=auto, 1=900/1800, 2=850/1900,
3=1800, 4=1900

A0

Send confirmation to
server after receiving
command from server

0=disable
1=enable

1/0

Confirmation
message="ACK\r\n"

A1

Wait confirmation from
server after sending
message to server

1/0

0=disable
1=enable
Confirmation message="ACK\r"

Timeout of waiting

A2

A3

confirmation from
server
Device Ack with ID
string

u8 0~255

0=disable

1/0

1=enable
0=Device id

ID string is IMEI or

A4

1/0

1=IMEI

device ID

Available when A3=1

A5

OM

Enable Simple

1/0

Command
Enable voice call to

1/0

connect to server

0=disable
1=enable
0=disable
1=enable

Security

SOS

G0 SMS Phone number 1 char(20)
G1 SMS Phone number 2 char(20)
G2 SMS Phone number 3 char(20)
G3 SMS Phone number 4 char(20)
G4 SMS Phone number 5 char(20)
G5 SMS Phone number 6 char(20)

Media

H0 Report media

Type

bit0=SMS
bit1=TCP
bit2=UDP
bit6=Action[0]
bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

H1 Report number u16 0 ~ 65535

15

SMSÆ 0 or 1=1 SOS alarm

report;2~65535=2~65535 SOS
alarm report
GPRSÆ 0 =1 SOS alarm report
;1~65535= continue send SOS
alarm report till receive stop
command

H2 report interval

V0

V1

Voice Monitor

V4

V5

Call out SOS phone
number 1 when SOS
alarm
Allowed interval for
call in TR-203 after
SOS alarm happens
Voice Monitor call
in/out phone number
for voice monitor
command
Allowed interval for
call in TR-203 after
receiving voice

u16, in
seconds

1/0

u16, in
seconds

char(20)

u16, in
seconds

0 ~ 65535

0=disable
1=enable

0 ~ 65535
Available when V0=0

G0~G5 are also call in phone
number for voice monitor
command

0 ~ 65535
Available when V6=0

Alert

Parking

monitor command
Call in or call out for

0=Call in

V6

voice monitor

1/0

1=Call out

command

T0

Report interval in alert
state
Report interval in

T1

alarm state

u32, in

0 ~ 4Giga

seconds
u32, in

0 ~ 4Giga

seconds

T2 Report Media Media type bit0=SMS

bit1=TCP
bit2=UDP
bit6=Action[0]

16

bit7=Action[1]

Action=00: report format 0

Action=01: report format 1
Action=10: GPS on
Action=11:

Sleeping

Traveled distance for

u32, in

T3

sending report

Report interval in alert

meters

u32, in

U0

state
Report interval in

seconds
u32, in

U1

alarm state

seconds

U2 Report Media Media type

0 ~ 4Giga
0=disable

0 ~ 4Giga

0 ~ 4Giga
bit0=SMS

bit1=TCP
bit2=UDP
bit6=Action[0]
bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

Upper limit of speed

u8, in

0 ~ 255

OI

alarm
Lower limit of speed

Km/h
u8, in

0=disable
0 ~ 255

OJ

alarm
Hysteresis for speed

OP

Speed Limit

alarm

Km/h
u8, in
Km/h

0=disable
0 ~ 255
bit0=SMS

bit1=TCP
bit2=UDP
bit6=Action[0]

OL

Report Media for

Media type

speed alarm

bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

17

K0 Geo-fence enable 1/0

0=disable
1=enable
bit0=SMS
bit1=TCP
bit2=UDP

Geo-fence

K3

Geo-fence alarm report

Media type

Media

bit6=Action[0]
bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

Report media for

bit1=TCP

K4

reading Geo-fence

Media type

bit2=UDP

data

Ping

Tracking

Periodic

OD Report media for ping Media type

GPS fix time between

u16, in

receiving ping

OS

seconds

command and sending
out ping report

u32, in

P0 Report interval

seconds

bit0=SMS
bit1=TCP
bit2=UDP
bit6=Action[0]
bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

0~65535
For N1 & L4 command. If OS=0,
GPS fix time=C3

0 ~ 4Giga

P2 Report Media Media type bit0=SMS

bit1=TCP

18

bit2=UDP
bit6=Action[0]

bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

On-line

Traveled distance for

u32, in

P3

sending report

meters

u32, in

Q0 Report interval

seconds

Q2 Report Media Media type

Traveled distance for

u32, in

Q3

sending report

meters

0 ~4Giga
0=disable

0 ~ 4Giga
bit0=SMS

bit1=TCP
bit2=UDP
bit6=Action[0]
bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:
0 ~ 4Giga
0=disable

Interval in on-line state

u16, in

E4

for disconnecting and

0=disable

seconds

then re-connecting
Interval for checking if
GPRS connection is
on-line. If GPRS

u16, in

E5

connection is cut,

0=disable

seconds

TR-203 will try to
connect to server for
one time.
Enable/disable TR-203

0=disable

to send “OK” to server

E6

1/0

1=enable

after GPRS connection

Available when E5 is not 0

is re-built.

19

Report interval in

u32, in

R0

static state
Report interval in

seconds
u32, in

R1

motion state

seconds

R2 Report Media Media type

Traveled distance for

u32, in

R3

sending report

meters

0 ~ 4Giga

0 ~ 4Giga
bit0=SMS

bit1=TCP
bit2=UDP
bit6=Action[0]
bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:
0 ~ 4Giga
0=disable

Motion

R7

R9

RA

RB

RC

E4

Automatic change
from motion mode to
on-line mode
Minimum distance to
be judged as moving
state
Turn off GSM module
in static state

Keep GPRS on-line in
static state

Keep GPRS on-line in
moving state
Interval in on-line state
for disconnecting and
then re-connecting

1/0

u16, in
meters

1/0

1/0

1/0

u16, in
seconds

0=disable
1=enable

0 ~ 65535

0=turn on GSM module
1=turn off GSM module
Available when RA=0
0=disable
1=enable
0=disable
1=enable

0=disable

E5 Interval for checking if

GPRS connection is

u16, in
seconds

0=disable

on-line. If GPRS
connection is cut,

20

TR-203 will try to

connect to server for
one time.

E6

RD

RE

RF

RG

Enable/disable TR-203
to send “OK” to server
after GPRS connection
is re-built.
Interval for switching
from validation to
static state
if no motion detected
Traveled distance to
be judged as keep in
moving state
Interval for switching
from moving to static
state
if no motion detected
Check GPS off time
setting (C7, C8, C9, CA

1/0

u16, in
seconds

u16,
Unit: meter

u16, in
seconds

1/0

0=disable
1=enable
Available when E5 is not 0

0=Interval is the same with R1

0=Interval is the same with R1

0=disable
1=enable

RH

GPS always on in

1/0

moving state

0=disable
1=enable

u32, in

W0 Start time

0 ~ 86400

seconds
u32, in

W1 End time

0 ~ 86400

seconds
u16, in

W2 Report interval

1 ~ 65535

seconds

Timer

Timer 0

00 ~ 7f
Weekday is in hex-digit format

u8, xx(hex

which specifies applicable day in

W3 Weekday mask

digits)

a week, where bit 0 represents
Sunday, bit1 represents Monday,
etc.

W4 Report Media Media type bit0=SMS

bit1=TCP

21

bit2=UDP

bit6=Action[0]
bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

Timer 1

X0 Start time

u32, in
seconds
u32, in

X1 End time

seconds
u16, in

X2 Report interval

seconds

u8, xx(hex

X3 Weekday mask

digits)

X4 Report Media Media type

0 ~ 86400

0 ~86400

1 ~ 65535
00 ~ 7f

Weekday is in hex-digit format
which specifies applicable day in
a week, where bit 0 represents
Sunday, bit1 represents Monday,
etc.
bit0=SMS
bit1=TCP
bit2=UDP
bit6=Action[0]
bit7=Action[1]

Timer 2

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

u32, in

Y0 Start time

0 ~ 86400

seconds
u32, in

Y1 End time

0 ~ 86400

seconds
u16, in

Y2 Report interval

1 ~ 65535

seconds

Y3 Weekday mask u8, xx(hex 00 ~ 7f

22

digits) Weekday is in hex-digit format

which specifies applicable day in
a week, where bit 0 represents
Sunday, bit1 represents Monday,
etc.
bit0=SMS
bit1=TCP
bit2=UDP
bit6=Action[0]

Timer 3

Y4 Report Media Media type

u32, in

Z0 Start time

seconds
u32, in

Z1 End time

seconds
u16, in

Z2 Report interval

seconds

u8, xx(hex

Z3 Weekday mask

digits)

bit7=Action[1]

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

0 ~ 86400

0 ~ 86400

1 ~ 65535
00 ~ 7f

Weekday is in hex-digit format
which specifies applicable day in
a week, where bit 0 represents
Sunday, bit1 represents Monday,
etc.
bit0=SMS
bit1=TCP
bit2=UDP
bit6=Action[0]
bit7=Action[1]

Z4 Report Media Media type

Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

23

2.8 Command’s Codeword

Command’s Codeword

Codeword Parameters Description

M7 Set Standby Mode
M2 Set Periodic Mode
M3 Set On-Line mode
M4 Set Motion mode
M6 Set Parking mode
M1 Set Sleeping mode
M8 Set Off mode

N0 Set Timer
N1 Ping device

N4 Enable Voice Monitor
N6 Enable Geo-fence
N7 Disable Geo-fence
N8 Enable Data logger
N9 Disable Data logger
Na Dismiss SOS alarm
Nb Dismiss parking alarm
Nc Dismiss sleeping alarm
Ne Dismiss Geo-fence alarm
Nh Dismiss low battery alarm

Ni Dismiss All alarm

L1 Read Configuration

L3 Read Geo-fence

Make TR-203 connect to

L4

Server

Adding up to 1-5 parameters.
If parameter=(ALL), then all user
configuration data will be reported.

L5 Disconnect from Server
LA Restore default configuration

24

Restore all parameters to factory
value

LC Clear data logger
LH Re-Set device

(W)for writing current configuration
to default setting.

(phone_number,"00SMS
message")

LJ Send SMS message

SMS message are enclosed by
quotation marks. (“00” should be
added prior to the SMS message)

25

2.9 Report Media

Report media is the method that TR-203 sends report. No matter you send the
command by SMS or TCP or UDP, TR-203 will send the report via the report media.

bit0=SMS
bit1=TCP
bit2=UDP
bit5=USB

Report Media Media type

Action Media Type
bit 7 6 5=USB 4 3 2=UDP 1=TCP 0=SMS
Ex 1
TCP
Ex 2
UDP
Ex 3
GPS
on

0 0 0 0 0 0 1 0

0 1 0 0 0 1 0 0

1 0 0 0 0 0 0 0

bit6=Action[0]
bit7=Action[1]
Action=00: report format 0
Action=01: report format 1
Action=10: GPS on
Action=11:

Example 1: Ask TR-203 to send on-line report with report interval of 5 minutes
(Q0=300) and report format 0 to TCP server (Q2=02).
GSC,011412000010789,M3(Q0=300,Q2=02)*07!

Example 2: Ask TR-203 to enter motion mode with static report interval of 7
minutes (R0=420) and moving report interval of 40 seconds (R1=40), report format
1 to UDP server (R2=44).
GSC,011412000010789,M4(R0=420,R1=40,R2=44)*71!

Example 3: Set Timer 1 to turn on GPS without sending report (X4=80), Start time:

26

09:00 AM (X0=32400), End time: 06:00 PM (X1=64800), Report interval: 1 hour
(X2=3600), Report day: from Monday ~Friday (X3=3E)
GSS,011412000012789,3,0,X0=32400,X1=64800,X2=3600,X3=3E,X4=80*53!

27

2.10 Checksum

The checksum value is derived by the same method of NMEA standard. It is
calculated by ‘exclusive OR’ the 8 data bits of each character before “*” in the
sentence, but excluding “*”. The hexadecimal value of the most significant and
least significant 4 bits of the result are converted to two ASCII characters (0-9, A-F)
for transmission. The most significant character is transmitted first.

Example1: set the device whose IMEI is 011412000011274, the APN is internet, the user

name and password are not necessary, the server type is TCP, the server IP is

220.128.207.75, the server port number 3000.

The setup command is

GSS,011412000011274,3,1,D1=internet,D2=,D3=,D8=02,E0=220.128.207.75,E1=3000
*5E!
The checksum is 5E.

Example2: Set TR-203 periodic report and ask it to report based on traveled distance

(P3) of 500 meters
The setup command is

GSC,011412000010789,M2(P3=500)*72!
The checksum is 72.

Example3:

(T0), report interval of 30 for alarm state (T1), report’s traveled distance of 700 meters
(T3) and report media (T2) TCP

GSC,011412000010789,M6(T0=3600,T1=30,T2=02,T3=700)*02!
The checksum is 02.

Set TR-203 parking mode with report interval of 3600 seconds for alert state

28

3 Configuration

You could read or set TR-203 configuration parameters by USB, SMS, TCP,
UDP communication protocol.

3.1 Read parameters of configuration

Command’s format

:

GSC,IMEI,L1(x1,x2,x3,x4,x5)*Checksum!
GSC,IMEI,L1(ALL)*Checksum!

Add up to 1-5 parameters.
If parameter =(ALL), then all user configuration data will be
generated.

Report format:

GSs,IMEI,T,S,x1=y1,x2=y2,x3=y3,……*Checksum!

x1,x2,x3… are code words for configuration parameters.
y1,y2,y3… are their respective settings.

Example 1:

Ask TR-203 report parameters of Motion mode(R0,R1,R2,R3)
GSC,136489586301578,L1(R0,R1,R2,R3)*35!

Report parameters R0,R1,R2 and R3 form TR-203
GSs,136489586301578,3,0,R0=3600,R1=30,R2=02,R3=0*4E!

Example 2

:

Ask TR-203 report all parameters
GSC,135485956301257,L1(ALL)*5C!

29

Report all parameters from TR-203
GSs,135485956301257,1,0,O5=TR203,O7=F-ORT-203-08120421.

0.0.0.0,O6=28800,O4=7,B0=,B1=,B2=,I2=1,J0=20,J1=15,J6=02*0
2!

GSs,135485956301257,0,1,O1=5,O3=STRPAB27GHKLMN*U!,ON
=SPAN*!,OO=02,C0=0,C1=300,C2=30,C3=10*18!

GSs,135485956301257,0,2,D1=,D2=,D3=,D4=,D5=,D6=1,E0=,E1=
5000,F0=,F1=5,A0=1,A1=0,A2=5,A3=0,A4=1,OM=1*28!

GSs,135485956301257,0,3,G0=,G1=,G2=,G3=,G4=,G5=,H0=02,H
1=3,H2=30,V1=600,V0=1,V4=,V5=300*13!

GSs,135485956301257,0,4,T0=3600,T1=30,T2=02,T3=0,U0=3600,
U1=30,U3=02,OI=100,OJ=60,OL=02,OP=5,OQ=30*2C!

GSs,135485956301257,0,5,K3=02,K4=02,K5=30,OD=02,P0=60,P
2=02,P3=0,Q0=60,Q2=02,Q3=0*0A!

GSs,135485956301257,0,6,R0=3600,R1=180,R2=02,R3=0,W0=0,
W1=86400,W2=60,W3=40,W4=02*0D!

GSs,135485956301257,2,7,Y0=,Y1=,Y2=3600,Y3=,Y4=02,Z0=,Z1=
,Z2=30,Z3=,Z4=02,X4=02,Z0=,Z1=,Z2=30,Z3=,Z4*43!

3.2 Set parameters of configuration

Commands format:

GSS,IMEI,T,S,x1=y1,x2=y2,x3=y3,……,*Checksum!

x1,x2,x3… are code words for configuration parameters.
y1,y2,y3… are their respective settings.
Example 1:

30

Set parameters of GPRS setting (D1,E0,E1)

Codeword Parameters Value

D1 APN Internet
E0 Host IP 1 201.89.56.207
E1 Host Port number 1 5000

GSS,138785469589531,3,0,D1=internet,E0=201.89.56.207,E1=50
00*01!

Example 2:

Set parameters of Timer 1: Start time: 09:00 AM (X0=32400), End
time: 06:00 PM (X1=64800), Report interval: 1 hour (X2=3600),
Report day: from Monday ~Friday (X3=3E)

GSS,011412000012789,3,0,X0=32400,X1=64800,X2=3600,X3=3E*
26!

31

4 GSM & GPRS

4.1 GSM & GPRS Setting

In order to activate the communication between server and device, the GPRS parameter
is necessary to set at the beginning. The GPRS parameters are included as the table
below . Please contact with your telecom operator for the APN, user name, and password.
Please contact your ISP provider for DNS1 and DNS2.
You could also set the tracker to use specific GSM frequency band by the parameter E9.
If you set E9 to be 0, tracker will search the frequency itself.

Codeword Parameters Value Description

D1 APN char(32)
D2 User Name char(32)
D3 Password char(32)
D4 DNS 1 char(32)
D5 DNS 2 char(32)

D8

E0
E1 Host Port number 1 u16

E9 GSM frequency band u8

Note:

1. If user name and password are not necessary for your telecom operator,
please keep D2 and D3 blank.

2. If the value of E0 is IP, you do not have to set D4 and D5. Please skip the

GPRS mode for L4
command
Host IP 1 or domain
name

Server
type

char(32)

02=TCP
04=UDP

0=auto, 1=900/1800,
2=850/1900, 3=1800,
4=1900

The setup format of GPRS setting is “GSS,IMEI,T,S,D1=y1,D2=y2,D3=y3,D4=y4, D5=y5,
D8=y6,E0=y7,E1=y8,*Checksum!”

fields.

32

For example, set the device whose IMEI is 011412000010789, the APN is internet, the
user name and password are not necessary, the server type is TCP, the server IP is

220.128.207.75, the server port number 5000.
The setup command is

GSS,011412000010789,3,1,D1=internet,D2=,D3=,D8=02,E0=220.128.207.75,E1=5000
*5E!

4.2 Acknowledgement

Acknowledgement is the acknowledge receipt used to confirm if server or
device receive the command or report from each other.
The following parameters must be set for configuration or sending those
parameters by other action command for enable/disable acknowledgement.

Code

word

A0

A1

A2

Parameters Value Description

Send confirmation to server
after receiving command
from server

Wait confirmation from
server after sending
message to server
Timeout of waiting
confirmation from server

Confirmation
message="ACK\r\n"
when A3=0
When A3=1, A4=1,
confirmation

1/0

1/0

u8 0~255

message=”IMEI,
ACK\r\n"
When A3=1,A4=0,
confirmation
message=”Device ID,
ACK\r\n"

Confirmation
message="ACK\r"

A3 Device Ack with ID string 1/0
A4 ID string is IMEI or device ID 1/0

For example, set A0=1, A1=1, A3=1, A4=1, server sends command to TR-203

33

1=IMEI, 0=Device ID
Available when A3=1

whose IMEI is 011412000010789.
After receiving the command, TR-203 will send acknowledgement receipt as
“011412000010789,ACK\r\n”

For example, set A0=1, A1=1, A3=1, A4=0, TR-203 whose device ID is Globalsat,
sends report to server.
After receiving the command, TR-203 will send acknowledgement receipt as
“Globalsat,ACK\r\n”

For example
After receiving the command, TR-203 will send acknowledgement receipt as
“ACK\r\n”

, set A0=1, A1=1, A3=0, server sends command to TR-203

4.2.1 Receive Acknowledgement from Server

Receive ACK from server during “A2” time:

Server

Send commands via SMS or UDP or TCP

Report via SMS or UDP or TCP

Send “ACK” via SMS or UDP or TCP

Device

“A2” time

34

Not receive ACK from server during “A2” time:

Server Device

Send commands via SMS or UDP or TCP

Report via SMS or UDP or TCP

Report via SMS or UDP or TCP

4.2.2 Respond Acknowledgement to Server

Receive report commands from server:

“A2” time

Server Device

Send report commands via SMS or UDP or TCP

Respond ACK via SMS or UDP or TCP

Send report via SMS or UDP or TCP

35

Receive other commands from server:

Server Device

Send other commands via SMS or UDP or TCP

Respond ACK via SMS or UDP or TCP

36

5 GPS

In the general tracking modes, TR-203 will turn on GPS.
There are some conditions that you have to extra make GPS on.

1. Report based on traveled distance in the periodic mode, on-line mode, parking
mode, motion mode

2. Speed limit

3. Geo-fence mode

4. Data Logger

There are two ways for turning on GPS, one is to keep GPS always on by parameter
C0, and the other is to use timer. Keep GPS always on will make the power run up
within 10 hours.
The recommended method of making GPS on is to use timer.
While using timer, you could set the report media (X4 or Y4 or Z4) as 80, then
TR-203 will turn on the GPS according to the report interval (X2 or Y2 or Z2)

Note:
Using timer to turn on GPS, TR-203 does not turn on GPS all the time
during the period from Start Time (X0 or Y0 or Z0) to End Time (X1 or Y1
or Z1). GPS is turn on according to the report interval (X2 or Y2 or Z2)
during the period from Start Time to End Time.

For the details of setting timer, please refer to chapter “10 Timer.”

0=disable

C0 GPS always on 1/0

The time for starting to

1=enable
Applicable to all modes except
Sleeping and Off mode

C1

get GPS fix before the
next report time if TR-203
does not get GPS fix in
last report, or got GPS fix
for 1 hour ago

u16, in
seconds

37

60 ~ 600

Note: TR-203 will send out the report
whether it gets GPS fix or not when
C1 time ends.

The time for starting to

10 ~ 120

C2

C3

C7

C8

C9

get GPS fix before the
next report time if TR-203
got GPS fix within 1 hour
GPS fix time before
sending out the first
report

Choose to use C8 or
C9+CA

Interval for starting to get
GPS fix
Interval for starting to get
GPS fix when speed is
lower than 10 KM/H

u16, in
seconds

u16, in
seconds

1/0

u16, in
seconds

u16, in
seconds

Note: TR-203 will send out the report
whether it gets GPS fix or not when
C2 time ends.

0 ~ 600
If "C3"=0, disable first report
message.
0=use C8
1=use C9+CA
Applicable for standby, periodic and
on-line mode
0 ~ 65535
Applicable if C7=0
0 ~ 65535
Applicable if C7=1 and speed<10
Km/H
0 ~ 4Giga
Applicable if C7=1 and speed>=10
Km/H

Interval for starting to get

You have to take the value to divide

CA

GPS fix when speed is

u32

the speed to get the interval. For

higher than 10 KM/H

example, if you set the value as 54000
and the speed is 60 KM/H. The
interval will be 5400/60=900 seconds

RH

GPS always on in moving

1/0

state

0=disable
1=enable

C7, C8, C9, and CA is for speeding up the time of getting GPS fix if you set a long
report interval in stand-by, periodic and on-line mode. Between the long report
interval, C7, C8, C9, and CA will make TR-203 get GPS fix. Then TR-203 can speed
up the time of getting GPS fix at the next report.

C1 example, the next report time is 10:00 AM and TR-203 does not get GPS fix in
last report, C1 is 180 seconds. TR-203 will start to get GPS fix at 9:57 AM and send
out report at 10:00

38

C2 example, the next report time is 10:00 AM and TR-203 got GPS fix within 1 hour,
C2 is 20 seconds. TR-203 will start to get GPS fix at 9:59:40 AM and send out report
at 10:00

C3 example, C3=120 seconds, TR-203 is in the motion mode. When TR-203 is
moved, it will try to get GPS fix for 120 seconds before sending motion moving
report.

39

6 Tracking

6.1 Ping

Ping is for getting the present location of TR-203 immediately. TR-203 will
report its present location and concerning information when getting the
ping command.
You can ping TR-203 by L4 command or by N1 command.
The parameters of ping:

Code
word

D8 Report Media for L4

OD

OS

C3 u16, in seconds

Parameters Value Description

Report media for
ping (N1)
GPS fix time between
receiving ping
command and
sending out ping
report

02=TCP
04=UDP

Please refer to 2.9

u16, in
seconds

0 ~ 600
If "C3"=0,
disable first
report

The connecting method
for TR-203 to connect to
server after receiving
“L4” command.

Report media

If OS=0, GPS fix
time=C3

GPS fix time before
sending out the first
report

message.

Commands format:

GSC,IMEI,N1*Checksum!

40

Command Codeword Parameters

N1 Ping device

L4 Connect to server

Example 1:

Ping TR-203 location and ask it to report via SMS (Send
command via SMS or TCP or UDP)

GSC,135785412249986,N1(OD=01)*2C!

41

6.2 Periodic Mode

Periodic mode is for setting an interval for TR-203 to regularly report its
location according to the interval. When it reaches the report time, TR-203
will turn on GPS and GPRS connection and report the location and
concerning information to server. Af ter sending the information, TR-203 will
disconnect from server.

Note of Traveled Distance:

You can also set a traveled distance, and then TR-203 will report by the
combination of report interval and traveled distance.
For example, the report interval is 60 seconds, the traveled distance is
800 meters, TR-203 sends 1 report at 10:00:00, and then it detects the
traveled distance is over 800 meters at 10:00:50, it will send out one
report and re-start to count the report interval and the traveled distance.
The next report will be sent out at 10:01:50 or when the traveled
distance is over 800 meters.

The parameters of periodic mode:

Code
word

P0 Report interval 1~4Giga seconds
P2 Report Media

P3

Parameter Value Description

Please refer to 2.9

Report media
0=disable
1~4Giga
Unit: meter

Traveled distance

for sending report

If you want TR-203

to send reports

according to

traveled distance,

you have to extra

make GPS on.

Please refer to

“Chapter 4 GPS.”

Commands format:

GSC,IMEI,M2*Checksum!

42

Command Codeword Parameter

M2 Set periodic mode

Example 1:

Set TR-203 periodic report and ask it to report based on
traveled distance (P3) of 500 meters (Send command via SMS or
TCP or UDP), turn on GPS by timer 1: Start time:12:00 AM
(X0=0), End time:12:00 AM (X1=86400), Report interval:30
seconds (X2=30), Report time: From Monday to Sunday (X3=7F),
GPS on (X4=80)

GSC,011412000010789,M2(P3=500,X0=0,X1=86400,X2=30,X3=7F
,X4=80)*7F!
Note: You have to turn GPS on. Please refer to chapter 5 GPS.

Example 2:

Set TR-203 periodic report and ask it to report based on report
interval (P0) 0f 30 seconds
GSC,135785412249986,M2(P0=30)*45!

43

6.3 On-Line Mode

In On-Line mode, TR-203 will keep GPRS connection. If TR-203 detects the
GPRS connection is cut, it will try to connect to server for one time. If it
cannot connect to server, it will re-connect to server when the next report
time.
Some telecom operator will kick off the continual GPRS connection. So you
could make GPRS connection cut and then make the GPRS connection
again according to a regular interval by parameter E4. If E4=0, TR-203 will
not cut GPRS connection and then connect again. It will keep GPRS
connection. You could also make TR-203 to check if GPRS connection is
on-line according to a regular interval by parameter E5. If GPRS connection
is cut, TR-203 will try to connect to server for one time.

Note of Traveled Distance:

You can also set a traveled distance, and then TR-203 will report by the
combination of report interval and traveled distance.
For example, the report interval is 60 seconds, the traveled distance is
800 meters, TR-203 sends 1 report at 10:00:00, and then it detects the
traveled distance is over 800 meters at 10:00:50, it will send out one
report and re-start to count the report interval and the traveled distance.
The next report will be sent out at 10:01:50 or when the traveled
distance is over 800 meters.

You can also set a traveled distance, and then TR-203 will report by the
combination of report interval and traveled distance.

You could define the content of report and the report interval of on-line
mode.

The parameters of On-Line mode:

44

Code
word

Q0 Report interval 1~4Giga seconds

Parameters Value Description

Please refer to

Q2 Report Media

Traveled distance for

Q3

sending out report

Interval in on-line
state for

E4

disconnecting and
then re-connecting

0=disable
1~4Giga
Unit: meter

u16, in seconds

2.9 Report
media
If you want
TR-203 to send
reports
according to
traveled
distance, you
have to extra
make GPS on.
Please refer to
“Chapter 4
GPS.”

E5

E6

Interval for checking
if GPRS connection
is on-line. If GPRS
connection is cut,
TR-203 will try to
connect to server for
one time.
Enable/disable
TR-203 to send “OK”
to server after GPRS
connection is
re-built.

Commands format:

u16, in seconds 0=disable

0=disable
1=enable

1/0

Available when
E5 is not 0

GSC,IMEI,M3*Checksum!

45

Command Codeword Parameters

M3 On-line mode

Example 1:

Ask TR-203 on-line report (Send command via SMS or TCP or
UDP)

GSC,130158974523157,M3*1A!

Example 2

:

Ask TR-203 set on-line report with interval of 60 seconds and
report by UDP
GSC,011412000010789,M3(Q0=60,Q2=04)*34!

46

6.4 Motion Mode

Motion mode is an economic report mode. Under motion mode, TR-203 will
report its location with high frequency when TR-203 detects motion
(moving state). When TR-203 is static, it will report its location with low
frequency (static state). It can save the report-transmission fee. Between
the moving state and static state, there is a validation state for TR-203 not
to jump to static state as soon as it does not detect motion. You could set
TR-203 keep in moving state by setting a traveled distance (RE) within a
defined interval (RF).

There are 2 report frequency of motion mode, one is when TR-203 detects
motion, and the other is when TR-203 is static. The behavior is as following:

o

n

p

q

s

Time

r

R1 (Moving interval)

R0 (Static interval)

(Static Report)

(Moving Report)

n Receive command and then enter motion static mode.
o When TR-203 detects motion, it will enter motion moving mode and

send “static to moving” report.

p Motion Moving Report.
q When TR-203 is static, it will send “moving to static” report and then

return to the motion static mode.

r Re-start timer for motion static interval.
s Motion Static Report.

Note of Traveled Distance:

You can also set a traveled distance, and then TR-203 will report by the
combination of report interval and traveled distance.
For example, the report interval is 60 seconds, the traveled distance is 800
meters, TR-203 sends 1 report at 10:00:00, and then it detects the traveled
distance is over 800 meters at 10:00:50, it will send out one report and
re-start to count the report interval and the traveled distance. The next report
will be sent out at 10:01:50 or when the traveled distance is over 800 meters.

47

(Static to Moving Report)

(Moving to Static Report)

You could define the content of report and the report interval of motion
mode.
If you want to save the battery power, you could turn off GSM module in
static state by making parameter RA=1.
In motion mode, TR-203 will make GPRS connection while sending static or
moving report. After sending report, it will cut the GPRS connection. If you
want to keep GPRS on-line, you could set RB=1 to keep GPRS on-line in
static interval and set RC=1 to keep GPRS on-line in moving interval. Some
telecom operator will kick off the continual GPRS connection. So you could
make GPRS connection cut and then make the GPRS connection again
according to a regular interval by parameter E4. You could also make
TR-203 to check if GPRS connection is on-line according to a regular
interval by parameter E5. If GPRS connection is cut, TR-203 will try to
connect to server for one time.
In order to avoid TR-203 jump to static state as soon as it does not detect
motion, you could set TR-203 keep in moving state by setting a traveled
distance (RE) within a defined interval (RF).

The parameters of motion mode:

Code

Parameters Value Description

word

Report interval in static

1~4Giga seconds

R0

state
Report interval in moving

1~4Giga seconds

R1

state

Please refer to

R2 Report Media

0=disable
1~4Giga
Unit: meter

2.9 Report
media
If you want
TR-203 to
send reports

Traveled distance for

according to

R3

sending report

traveled
distance, you
have to extra
make GPS on.

48

Automatic change from

Please refer to
“Chapter 4
GPS.”

R7

R9

RA

RB

RC

motion mode to on-line
mode when TR-203 does
not detect motion
Minimum distance to be
judged as moving state

Turn off GSM module in
static state

Keep GPRS on-line in
static state

Keep GPRS on-line in
moving state
Interval in on-line state for

1/0

0=disable
1=enable

u16,

0 ~ 65535

Unit: meter

0=turn on GSM
module

1/0

1=turn off
GSM module
Available
when RA=0

1/0

0=disable
1=enable
0=disable

1/0

1=enable

E4

E5

E6

RD

RE

disconnecting and then
re-connecting
Interval for checking if
GPRS connection is
on-line. If GPRS
connection is cut, TR-203
will try to connect to
server for one time.

Enable/disable TR-203 to
send “OK” to server after
GPRS connection is
re-built.

Interval for switching from
validation to static state
if no motion detected
Traveled distance to be
judged as keep in moving

u16, in seconds 0=disable

u16, in seconds 0=disable

0=disable
1=enable

1/0

Available
when E5 is not
0
0=Interval is

u16, in seconds

the same with

R1
u16,
Unit: meter

49

state
Interval for switching from

RF

RG

RH

moving to static state
if no motion detected
Check GPS off time
setting (C7, C8, C9, CA)
GPS always on in moving
state

Commands format:

u16, in seconds

1/0

1/0

0=Interval is

the same with

R1

0=disable

1=enable

0=disable

1=enable

GSC,IMEI,M4*Checksum!

Commands Codeword Parameters

M4 Set motion mode

Example 1:

Ask TR-203 set motion report (Send command via SMS or TCP
or UDP)

GSC,136639674520921,M4*1E!

Example 2:

Set TR-203 motion mode with report interval of 3600 seconds
for static state (R0), report interval of 30 for moving state (R1)
and report media (R2) TCP

GSC,130158974523157,M4(R0=3600,R1=30,R2=02)*44!

50

7. Alert

7.1 Parking Mode

Parking mode is for user to make TR-203 send alarm location report when
the TR-203 is moved. In addition to the alarm location report, TR-203 will
also send regular location report when TR-203 is parked.

You could define the content of report and the report interval of parking
mode.

There are 2 report interval of parking mode, one is when TR-203 is static
(under alert state), and the other is when TR-203 is moving (under alarm
state). The behavior is as following:

n

p

o

q

s

r

Time

T1 (Alarm interval)

T0 (Alert interval)

(Alert Report)

(Alarm Report)

n Receive command and then enter parking alert mode.
o When TR-203 is static, it will send “parking alert” report according to “Alert

interval” time.

p When TR-203 is moved, it will enter parking alarm mode and send “parking

alarm” report.

T

q When TR-203 is not moved, it will return to the parking alert mode.

h

r Re-start timer for parking alert interval.
s Parking Alert Report.

e

51

Note of Traveled Distance:

You can also set a traveled distance, and then TR-203 will report by the
combination of report interval and traveled distance.
For example, the report interval is 60 seconds, the traveled distance is 800
meters, TR-203 sends 1 report at 10:00:00, and then it detects the traveled
distance is over 800 meters at 10:00:50, it will send out one report and
re-start to count the report interval and the traveled distance. The next report
will be sent out at 10:01:50 or when the traveled distance is over 800 meters.

The parameter of parking mode:

Code
word

Report interval in alert

T0

state
Report interval in alarm

T1

state

T2 Report Media

Traveled distance for

T3

sending report

Parameters Value Description

1~4Giga seconds

1~4Giga seconds

Please refer to 2.9

Report media
0=disable
1~4Giga
Unit: meter

If you want TR-203 to

send reports

according to traveled

distance, you have to

extra make GPS on.

Please refer to

“Chapter 4 GPS.”

Commands format:

GSC,IMEI,M6*Checksum!

Commands Codeword Parameters

M6 Set parking mode
Nb Dismiss parking alarm

Example 1

:

Set TR-203 parking mode with report interval of 3600 seconds

52

for alert state (T0), report interval of 30 for alarm state (T1),
report’s traveled distance of 700 meters (T3) and report media
(T2) TCP

GSC,011412000010789,M6(T0=3600,T1=30,T2=02,T3=700)*02!

7.1.1 Enter Parking Alert

n

o

Time

T0 (Alert interval)

Other Tracking mode or standby mode

(Alert Report)

Receive command and then enter parking alert mode.

n
o When TR-203 does not detect motion, it will send “parking alert” report

by “Alert interval” time.

Example 1:

Set TR-203 enter parking alert (Send command via SMS or TCP
or UDP)

GSC,136639674520921,M6*1C!

53

7.1.2 Dismiss Parking Alarm

o

p

r

n

q

T1 (Alarm interval)

T0 (Alert interval)

(Alert Report)

(Alarm Report)

Note:

TR-203 will not switch to parking alert state if it still detects
motion after receiving the dismiss command. It will switch
to parking alert mode when it does not detect motion.

Under parking alert mode

n
o When TR-203 detects motion, it will enter parking alarm state and send

“parking alarm” report.

p When receive dismiss command, TR-203 will dismiss the parking alarm.
q Re-start timer for parking alert interval.
r Parking Alert Report.

Time

Example 1:

Dismiss TR-203 parking alarm status (Send command via SMS
or TCP or UDP)

GSC,136639674520921,Nb*4B!

54

7.1.3 Stop Parking Mode

Under Parking Alert State

o

p

n

q

Time

T0 (Alert interval)

Other Tracking mode or standby mode

(Alert Report)

n Under parking alert state.
o Parking alert report.

When receive other tracking or standby commands, the device will

p

enter other tracking or standby mode.

Under Parking Alarm State

Other Tracking mode or standby mode.

q

n

o

p

q

Time

T1 (Alarm interval)

T0 (Alert interval)

Other Tracking mode or standby mode

(Alert Report)

(Alarm Report)

n Parking alert report.

When TR-203 detects motion, it will enter parking alarm mode and send

o

alarm report by parking alarm interval.
Under parking alarm state, tracker receives other tracking or standby

p

command, the device will enter the other tracking or standby mode.
Other Tracking mode or standby mode.

q

Example 1:

55

Stop parking mode and then enter standby mode (Send
command via SMS or TCP or UDP)
GSC,10339376540375,M7*27!

56

7.2 Sleeping Mode

In order to save the power of TR-203, you could make TR-203 enter sleeping
mode. When TR-203 is under sleeping mode, its GSM module and GPS
module will be turned off, the motion sensor will be turned on. TR-203 will
also regularly send report to server according to the report Interval in Alert
State. When TR-203 senses vibration, it will send alarm report to server
according to the report Interval in Alarm State.

You could define the content of report and the report interval of sleeping
mode.

The behavior is as following:

n

o

GPS/GSM always be turn off, except alert and alarm report time

p

q

r

s

Time

U1 (Alarm interval)

U0 (Alert interval)

Alarm period (GSM always be turn on)

(Alert Report) GPS/GSM be turn on

(Alarm Report) GPS/GSM be turn on

n Received command and then entering sleeping mode (GPS/GSM will be turn off).
o When TR-203 is static, it will send “sleeping alert report” according to “Alert

interval time”.

p When TR-203 detects motion, it will enter sleeping alarm state (GPS/GSM wake up)

and send “sleeping alarm” report.

T

q If TR-203 is not moved, it will return to the sleeping alert state.

h

r Re-start timer for sleeping alert interval.

e

s Sleeping alert report.

57

The parameters of sleeping mode:

Code

Parameters Value Description

word

Report interval in

U0

alert state

Report interval in

U1

alarm state

U2 Report Media

7.2.1 Enter Sleeping Alert

1~4Giga seconds

1~4Giga seconds

Please refer

to 2.9
Report
media

n o

Time

U0 (Alert interval)

(Alert Report)

Other Tracking mode or standby mode

T

n Under standby mode or other tracking mode, TR-203 received

command and then enter sleeping alert mode (GPS/GSM be turn off).

o When TR-203 is static, it will send “sleeping alert” report according to

“Alert interval” time.

Command’s format:

GSC,IMEI,M1*Checksum!

Commands Codeword Parameters

M1 Set sleeping mode
Nc Dismiss sleeping alarm

58

Example 1:

Set TR-203 sleeping mode with report interval of 3600 seconds
for alert state (U0), report interval of 30 for alarm state (U1), and
report media (U2) TCP

GSC,130158974523157,M1(U0=3600,U1=30,U2=02)*46!

7.2.2 Dismiss Sleeping Alarm

o

p

r

n

q

U1 (Alarm interval)

U0 (Alert interval)

(Alert Report)

(Alarm Report)

n Under sleeping alert state.
o When TR-203 detects motion, it will enter sleeping alarm mode and send

“sleeping alarm” report.

p When the device send alarm report to server and then exchange dismiss

command from server, the device will return to the sleeping alert mode.

q Re-start timer for sleeping alert interval.
r Sleeping Alert Report.

Time

Command’s format:

GSC,IMEI,Nc*Checksum!

59

Example 1:

Send dismiss sleeping alarm command to TR-203

GSC,130158974523157,M1(U0=3600,U1=30,U2=02)*46!

7.2.3 Stop Sleeping Mode

Under Sleeping Alert State

o

p

n

q

Time

T0 (Alert interval)

Other Tracking mode or standby mode

(Alert Report)

Under sleeping alert state.

n
o Sleeping alert report.

When receive other tracking or standby command, the device will enter

p

other tracking or standby mode.
Other Tracking mode or standby mode.

q

o

p

Under Sleeping Alarm State

n

Time

q

T1 (Alarm interval)

T0 (Alert interval)

Other Tracking mode or standby mode

60

(Alert Report)

(Alarm Report)

Sleeping alert report.

n

When TR-203 detects motion, it will enter sleeping alarm mode and

o

send alarm report.
Under sleeping alarm state, when received other tracking or standby

p

commands, the device will enter to the other tracking or standby mode.
Other tracking mode or standby mode.

q

Example 1:

Stop sleeping mode and then enter standby mode (Send
command via SMS or TCP or UDP)

GSC,10339376540375,M7*27!

Example 2

:

Stop sleeping mode and then enter periodic mode (Send
command via SMS or TCP or UDP)

GSC,10339376540375,M2*22!

Commands Codeword Parameters

M2 Set periodic mode

61

7.3 Speed Limits

High Speed Limit

Alarm

Speed higher than the top limit

Keep Speed alarm status

Low Speed Limit

n

n

o

o

p

q

Speed lower than the bottom limit

Automatic dismiss alarm

Speed higher than the top limit

Automatic dismiss alarm

q

p

OI+OP

OP

OI

OP

OI-OP

OJ+OP

OP

OJ

OP

OJ-OP

Alarm

Speed lower than the bottom limit

62

Keep Speed alarm status

The parameters of speed alarm:

Code

Parameters Value

word

OI Upper limit of speed alarm

OJ Lower limit of speed alarm

OL Report media for speed alarm

OP Hysteresis of speed alarm

7.3.1 Enable Speed Limit Alert

u8, in Km/H
0 ~ 255 Km/H
0=disable
u8, in Km/H
0 ~ 255 Km/H
0=disable
Please refer to 2.9
Report media
u8, in Km/H
0 ~ 255 Km/H

Example 1:

Set upper limit of speed alert (Send command via SMS or TCP
or UDP)

GSS,10339376540375,3,0,OI=105,OP=5,OL=02*6A!

Command Type Description

GSS Write setting to device

Code

word

OI

OL

Parameters Value Description

Upper limit of speed

105

alarm

Report media for

02

speed alarm

Set upper limit: 105
Km/h
Report alarm
messages via TCP.
Alarm messages

63

format: Format 0

OP

Hysteresis of speed

alarm

5

The behavior mode is as following:

Alarm (110 km/h)

Speed higher than the top limit

Keep sending alarm

110 Km/h

105 Km/h

Example 2:

n

o

p

q

Speed lower than the bottom limit

Automatic dismiss alarm (100 km/h)

OI+OP

OP

OI

OP

OI-OP 100 Km/h

Set lower limit of speed alert (Send command via SMS or TCP or
UDP)

GSS,10339376540375,3,0,OJ=65,OP=5,OL=02,*5E!

Command Type Description

GSS Write setting to device

Code

word

OJ

OL

Parameters Value Description

Upper limit of speed

65

alarm

Report media for

02

speed alarm

Set lower limit: 65
Km/h
Report alarm
messages via TCP.
Alarm messages
format: Format 0

OP

Hysteresis of speed

alarm

5

64

The behavior mode is as following:

n

70 Km/h

65 Km/h

o

Alarm

Speed lower than the bottom limit

7.3.2 Disable Speed Limit Alert

q

Speed higher than the top limit

Automatic dismiss alarm

p

Keep sending alarm

OJ+OP

OP

OJ

OP

OJ-OP 60 Km/h

Example 1:

Disable upper limit of speed alert (Send command via SMS or
TCP or UDP)

GSS,10339376540375,3,0,OI=0*48!

Command Type Description

GSS Write setting to device

Code

word

OI Upper limit of speed alarm 0 0=disable

Parameters Value Description

Example 2:

65

Disable lower limit of speed alert (Send command via SMS or
TCP or UDP)

GSS,10339376540375,3,0,OJ=0*46!

Command Type Description

GSS Write setting to device

Code

word

OJ Lower limit of speed alarm 0 0=disable

Parameters Value Description

66

7.4 Geo-fence

Geo-fence is for setting a rectangular area as permissible area or restricted
area. When TR-203 gets out the permissible area or goes in to the restricted
area, TR-203 will send its location to the preset mobile phone number via
SMS or to server via TCP, or UDP.

The behavior is as following:

Alert type of Geo-fence

1

Get in area

2 3 4 5

Get out of

area

(upper_left_Lon,upper_left_Lat)

7.4.1 Setup Geo-fence

Cross over

Stay in area

the boundary

(right_bottom_Lon,right_bottom_Lat)

Stay out of

area

Command’s format for set Geo-fence:

GSG,IMEI,T,S,1=(type,upper_left_Lon,upper_left_Lat,right_botto
m_Lon,right_bottom_Lat[,gxxx][,StartTime,EndTime,weekday]),
2=(…),3=(…),…*Checksum!

Format Value Note

67

GSG ”GSG” : Write geo-fence

Command

parameter command

head

IMEI (The IMEI number) GSM device

ID

T ‘0’ : Middle of message

‘1’ : Start of message
‘2’ : End of message

Message
packet

control
‘3’ : Start and End of message,
i.e., only one packet for
message

S ‘0’,’1’,’2’,’3’,…,’9’,’10’,’11’,…,’99’ Sequence

number

type 1=get in area

Alert type

of

Geo-fence
2=get out of area

upper_left_Lon,
upper_left_Lat

right_bottom_Lon,

3=cross over the boundary

4=stay in area

5=stay out of area

upper_left_Lon =Lon
upper_left_Lat =Lat

Lon: (+ or -)ddddddddd

unit: 0.000001 degree

Lat: (+ or -)dddddddd

unit: 0.000001 degree

right_bottom_Lon =Lon

The top left

coordinates

of specified

area

The right

right_bottom_Lat

right_bottom_Lat =Lat

Lon: (+ or -)ddddddddd

68

bottom

coordinates

of specified

unit: 0.000001 degree

area
Lat: (+ or -)dddddddd

unit: 0.000001 degree

Example: 12129141
12129141 x0.000001
=12.129141degree

gxxx g1~g254 Optional

field for

describing

this area

belong to

area group

xxx

Start Time 0~86400 sec

Example:

00:00:01 = 1
23:59:59 = 86399

End Time 0~86400 sec

Example:

00:00:01 = 1
23:59:59 = 86399

Optional

field for

specifying

time frame

of this

geo-fence

area. Start

Time and

end Time

are in

seconds.

Optional

field for

specifying

the frame of

this

geo-fence

area. Start

Time and

end Time

are in

seconds.

weekday bit0=Sunday

bit1=Monday

69

Weekday is

in hex-digit

bit2=Tuesday

format
bit3=Wednesday
bit4=Thursday
bit5=Friday
bit6=Saturday

which

specifies

applicable

day in a

week,

where bit 0

represents

Sunday,

bit1

represents

Monday,

etc.

* * End of field
Checksum The checksum value is derived

by the same method of NMEA
standard. It is calculated by
‘exclusive OR’ the 8 data bits of
each character before “*” in the
sentence, but excluding “*”. The
hexadecimal value of the most
significant and least significant
4 bits of the result are converted
to two ASCII characters (0-9,
A-F) for transmission. The most
significant character is
transmitted first.

! ! Message

delimiter

You can set up to 512 sets of geo-fence areas.

Example 1:

Set up 152nd ~157th sets of geo-fence areas

GSG,130738902846156,1,0,152=(2,121752441,24756536,1217529
24,24755863),153=(2,121743236,24748254,12174845,24744844)
*78!

70

GSG,130738902846156,0,1,154=(1,121758267,24786053,1217607
45,24784397),155=(3,120653272,24144678,120656791,2414037)
*73!

GSG,130738902846156,2,2,156=(1,120680072,24161526,1206808
66,24160439),157=(2,120675888,2410602,120722923,2406402)
*45!

Example 2

:

Set up 1st ~10th sets of Geo-fence areas

GSG,132763902812736,1,0,1=(1,121305521,24999088,121308246
,24997649,g2,00,86400,7f),2=(1,121302452,25004397,121305285,
25002842,g2)*0A!

GSG,132763902812736,0,1,3=(1,121299427,25014101,121302345
,25012545,,g2),4=(1,121301723,25022909,121305306,25021101,g

2)*63!

GSG,132763902812736,0,2,5=(1,12146435,25009979,121466711,
25008423,g2),6=(1,121471624,25012487,121474736,25010756,g2)
*74!

GSG,132763902812736,0,3,7=(1,121479371,25016629,12148068,
25015657,g2),8=(1,121547295,25043931,121548105,25043547,g2
)*7C!

GSG,132763902812736,2,4,9=(1,121536984,25049913,121538894
,25048514,g2),10=(1,121539195,25055901,121540675,25054773,
g2)*78!

Command’s format for read Geo-fence:

GSC,L3(1~512)*Checksum!

71

Commands Codeword Parameters

L3 Read Geo-fence

Example 1:

Ask TR-203 report the parameters of 1st ~10th Geo-fence area
The method of marking 1st ~10th geo-fence areas is to write 1~10
in the braces after L3, like L3 (1-10)

GSC,132763902812736,L3(1-10)*04!

Report format for read Geo-fence:

GSg,IMEI,T,S,1=(type,upper_left_Lon,upper_left_Lat,righ
t_bottom_Lon,right_bottom_Lat[,gxxx][,StartTime,EndTi
me,weekday]),2=(…),3=(…),…*Checksum!

About the parameters of reading geo-fence, please refer to the
parameters of setting geo-fence.

Example 1:

Report 1~10 coordinates of Geo-fence

GSg,132763902812736,1,0,1=(1,121305521,24999088,121308246
,24997649,g2,00,86400,7F),2=(1,121302452,25004397,121305285
,25002842,g2,00,86400,7F)*6D!

GSg,132763902812736,0,1,3=(1,121299427,25014101,121302345
,25012545,g2,00,86400,7F),4=(1,121301723,25022909,121305306
,25021101,g2,00,86400, 7F)*4F!

GSg,132763902812736,0,2,5=(1,12146435,25009979,121466711,2
5008423,g2,00,86400,02),6=(1,121471624,25012487,121474736,2
5010756,g2,00,86400,02)*54!

GSg,132763902812736,0,3,7=(1,121479371,25016629,12148068,
25015657,g2,00,86400,02),8=(1,121547295,25043931,121548105,

72

25043547,g2,00,86400,02)*5C!

GSg,132763902812736,2,4,9=(1,121536984,25049913,121538894
,25048514,g2,00,86400,04),10=(1,121539195,25055901,12154067
5,25054773,g2,00,86400,04)*58!

73

7.4.2 Enter Geo-fence Alert

Geo-fence is independent from the other general tracking modes. Sending
geo-fence command to TR-203 will not stop the other general tracking
modes. TR-203 could execute general tracking mode and geo-fence at the
same time
In geo-fence mode, it requires extra to turn on GPS on.
There are two ways for turning on GPS, one is to keep GPS always on by
parameter C0, and the other is to use timer. Keep GPS always on will make
the power run up within 10 hours.
The recommended method of making GPS on is to use timer.
While using timer, you could set the report media (X4 or Y4 or Z4) as 80,
then TR-203 will turn on the GPS.

Code

word

C0 GPS always on 1/0

X0 Start time u32, in seconds
X1 End time u32, in seconds
X2 Report interval u16, in seconds
X3 Weekday mask u8, xx(hex digits)

X4 Report Media

Command’s format for enable Geo-fence:

Parameters Value Description

Applicable to all
modes except
Sleeping and Off
mode

Please refer to

2.9 Report media

GSC,N6*Checksum!

Commands Codeword Parameters

N6 Enable Geo-fence

Example 1:

Asking TR-203 enter geo-fence alert state and make GPS

74

always on (C0=1)
GSC, 135097652783615,N6(C0=1)*47!

Example 2:

Asking TR-203 enter geo-fence alert state and use timer 1: Start
Time: 12:00:00AM (X0=0), End Time:11:59:59PM(X1=86399),
Report Interval=0 (X2=0), Weekday: Sunday~ Saturday (X3=7f),
Report Media: GPS ON(X4=80)

GSC,011412000010789,N6(X0=0,X1=86399,X2=0,X3=7f,X4=82)
*29!

7.4.3 Dismiss Geo-fence Alarm

Command’s format for dismiss Geo-fence alarm status:

GSC,Ne*Checksum!

Commands Codeword Parameters

Ne Dismiss Geo-fence Alarm

Example 1

:

Dismiss TR-203 geo-fence alarm status

GSC,135097652783615,Ne*4A!

7.4.4 Stop Geo-fence Alert

Command’s format for disable Geo-fence:

GSC,N7*Checksum!

Commands Codeword Parameters

75

N7 Disable Geo-fence

Example 1:

Asking TR-203 disable geo-fence

GSC,135097652783615,N7*18!

76

8 Emergency

When SOS (Emergency) button is long pressed, TR-203 will send its location
information to 6 sets of phone numbers by SMS or send its location
information to server via TCP, and UDP.

The parameters emergency:

Code

word

G0 SMS Phone number 1 char(20)
G1 SMS Phone number 2 char(20)
G2 SMS Phone number 3 char(20)
G3 SMS Phone number 4 char(20)
G4 SMS Phone number 5 char(20)
G5 SMS Phone number 6 char(20)

H0 Report media

H1 Report number u16

Parameters Value Description

Please refer to 2.9 Report
media
0 ~ 65535
SMSÆ 0 or 1=1 SOS alarm
report;2~65535=2~65535 SOS
alarm report
GPRSÆ 0 =1 SOS alarm
report;1~65535= continue
sending SOS alarm report till
receive stop command

H2 report interval

0~65535
seconds

77

9 Voice Monitor

The parameters of voice monitor:

Code

word

V0

V1

V4

V5

Parameters Value Description

Call out SOS phone
number 1 when SOS alarm
Allowed interval for call in
TR-203 after SOS alarm
happens

Call in/out phone number
for voice monitor

Allowed interval for call in
TR-203 after receiving
voice monitor command

1/0

u16, in
seconds

char(20)

u16, in
seconds

0=disable
1=enable
0 ~ 65535
Available
when V0=0
G0~G5 are
also call in
phone
number for
voice
monitor
command
0 ~ 65535
Available
when V6=0

V6

Call in or call out for voice

1/0

monitor command

0=Call in
1=Call out

Command format:

GSC,N4*Checksum!

Commands Codeword Parameters

N4 Enable voice monitor

Example 1

Make TR-203 call out (V6=1) the phone number of

:

78

[phone] (V4=[phone]) when receive the enable
voice monitor command (N4)

GSC,130789246109245,N4(V4=[phone],V6=1)*29!

Example 2:

Make TR-203 wait the phone number [phone]
(V4=[phone]) or SOS phone number 1~6” phone number
call in (V6=0) within 120 seconds (V5=120) when receive the
enable voice monitor command (N4)

GSC,130789246109245,N4(V4=[phone],V5=120,V6=0)
*69!

Example 3

:

Call out (V6=1) SOS phone number 1 when SOS alarm (V0=1)

GSC,011412000010789,N4(V0=1)*76!

Example 4:

Make TR-203 wait the phone number [phone]
(V4=[phone]) or SOS phone number 1~6” phone number
call in (V6=0) within 60 seconds from SOS alarm happens
(V1=60)

GSC,130789246109245,N4(V1=60,V4=[phone],V6=1)*59!



79

10 Timer

There are four timers for setting specified time report.

For Timer 0, when there is a new event (report), it will re-start to count down
the report interval again.
Timer 1 ~ 3 will not count down the report interval when there is a new event.

10.1 Timer 0

The following parameters must be set for configuration or
sending those parameters by other action command:

Code

word

W0 Start time 0~86400
W1 End time 0~86400
W2 Report interval 1~65535
W3 Weekday mask 00~7f u8, xx(hex digits)

W4 Report Media

10.2 Timer 1~3

Parameters Value Description

Please refer to

2.9 Report media

The following parameters must be set for configuration or
sending those parameters by other action command:
(“X”:Timer 1, “Y”:Timer 2, “Z”:Timer 3,)

80

Code

word

X0 Start time 0~86400
X1 End time 0~86400
X2 Report interval 1~65535
X3 Weekday mask 00~7f u8, xx(hex digits)

Parameters Value Description

X4 Report Media
Y0 Start time 0~86400

Y1 End time 0~86400
Y2 Report interval 1~65535
Y3 Weekday mask 00~7f u8, xx(hex digits)

Y4 Report Media
Z0 Start time 0~86400

Z1 End time 0~86400
Z2 Report interval 1~65535
Z3 Weekday mask 00~7f u8, xx(hex digits)

Z4 Report Media

Please refer to 2.9

Report media

Please refer to 2.9

Report media

Please refer to 2.9

Report media

81

11 Report Messages

There are two types of message’s report format, “format 0” and “format 1”.
Defined as follows:

11.1 Format 0 of Report Messages

Command’s format for set format 0 of report messages:

GSS,IMEI,T,S,O3=y1y2y3….yn,*Checksum!

y1,y2,y3… are their respective parameters of report messages.

(Refer to “2.6. Parameters of Report Messages” for details of
parameters’ definition)

Parameter’s Codeword Description

O3 Report format 0

Example 1

:

Set TR-203 format of report messages for format 0 (Send
command via SMS or TCP or UDP)

GSS,135785412249986,3,0,O3=SORPZAB72GHLMN*U!*6b!

(Refer to “2.6. Parameters of Report Messages” for details of
parameters’ definition)

Report format for format 0 of report messages (report
messages via SMS or TCP or UDP)

GSr,IMEI,Device_Mode,Report_Type,Alarm_Status,Geofence_st

82

atus,GPS_Fix,UTC_Date,UTC_Time,Longitude,Latitude,Altitude
,Speed,Heading,Number_of_Satellites,HDOP,Battery_capacity*
checksum!

Command’s format for read format of format 0:

GSC,IMEI,L1(O3)*Checksum!

Commands Codeword Parameters

L1 Read Configure

Example 1

:

Ask TR-203 report “format of format 0” (Send command via
SMS or TCP or UDP)

GSC,136647890362718,3,0,L1(O3)*6D!

TR-203 received “GSC,IMEI,L1(O3)*Checksum!” and report as
below (report via SMS or TCP or UDP)

GSs,136647890362718,3,0,O3=SORPZAB72GHLMN*U!*40!

11.2 Format 1 of Report Messages

Command’s format for set format 1 of report messages:

GSS,IMEI,T,S,ON=y1y2y3….yn,*Checksum!

y1,y2,y3… are their respective parameters of report messages.

(Refer to “2.6. Parameters of Report Messages” for details of
parameters’ definition)

Parameter’s Codeword Description

ON Report format 1

83

Example 1:

Set TR-203 format of report message for format 1 (Send
command via SMS or TCP or UDP)

GSS,131826789036289,3,0,ON=SPAN*U!*15!

(Refer to “2.6. Parameters of Report Messages” for details of
parameters’ definition)

Report format for format 0 of report messages (report
messages via SMS or TCP or UDP)

GSh, IMEI,Alarm_Status,GPS_Fix,Battery_capacity*checksum!

Command’s format for read format of format 1:

GSC,IMEI,L1(ON)*Checksum!

Commands Codeword Parameters

L1 Read Configure

Example 2:

Ask TR-203 report “format of format 1” (Send command via
SMS or TCP or UDP)

GSC,131826789036289,3,0,L1(ON)*16!

TR-203 receives “GSC,IMEI,L1(ON)*Checksum!” and report as
below (report via SMS or TCP or UDP)

GSs,131826789036289,3,0,ON= SPAN*U!*15!

84

12 Data Log

The function of Data Log is for you to record the location information of TR-203
based on the time interval or traveled distance or the combination of time interval
and distance. After recording the location information, you could connect TR-203
to PC by USB cable for downloading the data log.

If you want TR-203 to store position according to traveled
distance, you have to extra make GPS on. Please refer to
“Chapter 4 GPS.”

o

q

p

n

Time

O2 (Data logger interval)

T0 (Tracking report interval)

(Tracking report)

(Store position to buffer storage)

n Under tracking report state
o When device receives “N8” command and then enable data logger function.
p Store position according to data logger interval.
q Tracking report.

The following parameters must be set for configuration or
sending those parameters by other action command:

Code word Parameters Value Description

O2 Data logger interval u16, in seconds

OH Data logger distance u32, in meters

85

0 ~ 65535
0=disable
0 ~ 4Giga
0=disable

Command’s format for enable data logger:

GSC,IMEI,N8(O2)*Checksum!

Commands Codeword Parameters

N8 Enable Data logger

Under standby mode to store position according to data logger
interval

o

p

n

Time

O2 (Data logger interval)

Standby mode

(Store position to buffer storage)

n Under tracking report state
o When device received “N8” command and then enable data logger function.
p Store position in accordance with data logger interval.

The following parameters must be set for configuration or
sending those parameters by other action command:

Code word Parameters Value Description

O2

Data logger

u16, in seconds

interval

0 ~ 65535
0=disable

Command’s format for enable data logger:

GSC,IMEI,N8(O2)*Checksum!

86

Commands Codeword Parameters

N8 Enable Data logger

Under standby mode to store position according to data logger
distance

If you want TR-203 to store position according to traveled
distance, you have to extra make GPS on. Please refer to
“Chapter 4 GPS.”

o

p

n

Distance

O2 (Data logger distance) (Store position to buffer storage)

Standby mode

n Under tracking report state
o When device received “N8” command and then enable data logger function.
p Store position in accordance with data logger distance.

The following parameters must be set for configuration or
sending those parameters by other action command:

Code word Parameters Value Description

OH

Command’s format for enable data logger:

Data logger

u32, in meters

distance

0 ~ 4Giga
0=disable

GSC,IMEI,N8(OH)*Checksum!

Commands Codeword Parameters

N8 Enable Data logger

87

13 Buffer Storage

When TR-203 is carried to the areas without GSM/GPRS signal coverage, TR-203
could not send its location report s to server. In order not to lose the location report,
TR-203 will save the location reports during the periods without GSM/GPRS signal
to buffer storage. When TR-203 is carried to the areas with GSM/GPRS signal, it
will send the location reports in the buffer storage to server. TR-203 could save up
to 8000 pieces of location reports to buffer storage.

The behavior mode is as following:

n

o

p

q

r s

Buffer storage report interval (once every 4 seconds)

Tracking report interval

Lost GSM/GPRS signal period

(Tracking report)

(Buffer storage report)

(Store to buffer storage)

n

Tracking report

o Enter area without GSM/GPRS signal coverage.

The parameter of enable data buffer function is OG.
You could set OG by configuration or sending OG by the other action commands:

p Save location report to buffer storage
q Enter area with GSM/GPRS signal
r Send periodic report

Send the location report in the buffer storage

s

Code word Parameters Value Description

OG

Enable/ disable data

1/0

buffer function

0=disable
1=enable

Time

88

14 Cell ID

GSM Cell ID is assisted information to get device location. When TR-203 does not
get GPS fix, you could enable TR-203 to report the Cell ID. Then the report format
of TR-203 will automatically switch from format 0 to format 2 when TR-203 does not
get GPS fix. Report format 1 is not affected.

The parameter of enabling TR-203 to report the Cell ID is O8.

Code word Parameters Value Description

Enable/ disable TR-203 to

O8

report “cell ID” if it does
not get GPS fix

The report format (format 2) of cell ID is

GSi,IMEI,Device_Mode,Report_Type,Alarm_Status,Battery_capacity,
“MCC1,MNC1,LAC1,CID1,BSIC1,RSSI1”, “MCC2,MNC2,LAC2,CID2,BSIC2,RSSI2”,
“MCC3,MNC3,LAC3,CID3,BSIC3,RSSI3”,…*checksum!

MCC=mobile country code, 3 digits
MNC=mobile network code, 2 or 3 digits
LAC=location area code, 4 hexadecimal digits.
CID=cell identifier, 4 hexadecimal digits.
BSIC=base station identity code, 1 digit or 2 digits.
RSSI=received signal strength indicator, 1 digit or 2 digits.

The number of set of cell information depends on GSM network environment.

1/0

0=disable
1=enable

The maximum number is 5.

89

15 Simple Command

You could send simple commands by SMS to TR-203 to activate the following functions.

Note:

Before sending the simple commands, you still have to set the concerning parameters.
For example, you have to set the phone number for voice monitor.

Note:

To enable the simple command, please make the parameter A5=1.
For example, GSS, 011412000010789,3,0,A5=1*2c!

Simple Command Activated action Equal Command

“rs” Re-start TR-203 LH

“ir” Immediate report N1
“pr” Periodic Mode M2
“ol” On-line Mode M3

“pk” Parking Mode M6

“vm” Voice Monitor N4

“sp” Standby Mode M7

90