Sun-Tech ST4500 User manual

ST4500
User Manual
Suntech International Ltd.

ST4500 User Manual
2
1. Introduction
This document describes features, protocols and detail operation of ST4500.
If there is another operation description document for special buyer to customize or model and
the contents of the document is different with this, customizing document should be applied for
special buyer.
2. Overview
Device consists of LTE-M1, GPS and event parts.
The main purpose of device reports getting GPS position and other informs of vehicle to server
periodically.
Device can control or check connected lines and support additional functions.
2-1. Operation Mode
The device has 3 operation modes, driving, parking and emergency.
** Driving : Driving status when ignition is on.
** Parking : Parking status that starts if ignition is off during more than T1.
** Emergency : Once panic button is On or any other status as per designed.
The device sends emergency reports until A1 times or receiving server acknowledge.
2-2. Report
AVL reports GPS and some information at predefined interval, depending on the current modes.
Also, AVL sends some alerts, for example, movement at the parking condition, changing of
connected input line and so on.
Device distinguishes all reports with 6 types, Status report, emergency, event, alert, alive and
command response.
Device can store reports when reporting route (For example, LTE-M1 condition) is not successful.
Storage capacity is up to 2,000 status reports, 50 emergency reports, 50 alert reports (include
event reports) and 1500 bytes as command response. In case of status reports, oldest report is
erased and new report is buffered when the buffer is full and new status report enters (FIFO).
When reporting condition is recovered, device starts sending all buffered reports.
Also, this capacity can increase if it is needed.
Each type of reports has priority, and priority is as below.
Emergency  Command Response  Alert  Status Report  Alive (Lowest)

ST4500 User Manual
3
Emergency is the first to be sent after recovering LTE-M1 condition.
2-3. Setting Parameter
Parameters of device can be changed by LTE-M1 or SMS, and some control can be realized also in
the same way.
Detail protocols are described in Chapter 4.
2-4. Features
Key features are described here;
- Power Down
Device can process two steps of power-down, Sleep and Deep Sleep, for reducing power
consumption when the vehicle is parked.
- LED Indicator
LED indicates LTE-M1 and GPS states. It’s helpful to check error cause.
- Events
Device has 2 output lines, 3 input lines and ignition line.
- Update Firmware by Over The Air (FOTA)
When Firmware of device has some error or has to be changed for a new service to be
implemented, device can update internal ROM file by over the air (FOTA), remotely via LTE-M1.
Customers do not need to visit every vehicle to download the new firmware.
Method of FOTA describes at “SunTech_OTA_UA_Protocol” document in detail.
- Parking Lock
Device can check whether the vehicle moves off the preset parking boundary or starts driving
without ignition on. In the case that it notes the unauthorized moving or driving, it sends
emergency report immediately.
- Over speed
Device can check speed of vehicle and send alert of over-speed to server.
- GPS Antenna Checking
Device can alert when GPS antenna is disconnected.

ST4500 User Manual
4
It’s applicable only for models that have external antenna.
- Main Power Checking
The device can recognize the main power and inform to server when main power line is
disconnected or main power drops below preset value.
It’s applicable only for battery model.
- Battery Error Alert
Device can alert about battery error related on charging.
It’s applicable only for battery model.
3. Protocol Construction
All command and reports are string and follows below format.
Every filed is distinguished by semi colon.
All report string from device is ended by ‘＼r’ (0x0D).
Command message format (from server to device)
HDR DEV_ID VER Field 1 Field 2 …Field n
Field Definitions Remark
HDR String “ST4500” + Command type
DEV_ID 6 char. Device ID of AVL
VER “02” Protocol Version. This is fixed with “02”.
Field 1 ~ n String Contents
Device ID is unique number of each device that consists of 6digits.
If the command has invalid value or DEV_ID of the command that is sent by LTE-M1 or SMS is not
matched with DEV_ID of the unit.
Report message format (from device to server)
HDR DEV_ID SW_VER Field 1 Field 2 …Field n
Field Definitions Remark
HDR String “ST4500” + Report type

ST4500 User Manual
5
DEV_ID 6 char. Device ID of AVL
VER “001” Software version that the device has.
Field 1 ~ n String Contents
4. Commands
When the device is received a command, it responds with response string and changes some
parameters or acts related operation.
4-1. Network Parameters Setting
HDR DEV_ID VER AUTH APN USER_ID USER_PWD SEVER_IP SEVER_PORT
B_SEVER_IP B_SEVER_IP SMS_NO PIN_NO
● Definition : Set network parameters and PIN number.
Field Definitions Unit Remark
HDR “ST4500NTW” Command type
DEV_ID 6 char. Device ID
VER “02” Protocol Version
AUTH ‘0’ /‘1’/’A’ LTE-M1 authentication
0 : PAP(‘NO’ in Synctrack)
1 : CHAP(‘YES’ in Synctrack)
A : Automatic LTE-M1 set.
In this case, parameters in APN, USER_ID and
USER_PWD field should be empty.
APN String Access Point Name
USER_ID String ID for LTE-M1 Access
USER_PWD String Password for LTE-M1 Access
SEVER_IP String Server IP Address
SEVER_PORT String Server Port
B_SEVER_IP String Backup Server IP Address
B_SEVER_PORT String Backup Server Port
SMS_NO String Phone number what the device sends SMS report to.
This can be used for backup in the area that if LTE-M1
condition is not good. Or, it can be used main report
method when IP and Port are empty.

ST4500 User Manual
6
For no use, it should be empty.
PIN_NO String PIN Number to release PIN lock if it is enabled
<example>
[command] ST4500NTW;850000;02;0;internet;;;111.111.111.111;8600;;;;
[response] ST4500NTW;Res;850000;010;0;internet;;; 111.111.111.111;8600;;;;
ST4500NTW;Res;850000;010;A1;tim.br;tim;tim; 111.111.111.111;8600;;;;
<notes>
** If network does not require User ID and Password, these fields should be empty.
Automatic LTE-M1 Set
It the device is set to ‘Automatic LTE-M1 Set’, the device set LTE-M1 parameters automatically depending on
inserted SIM.
For example, if Airtel SIM is inserted, the device set AUTH to 0, APN to “aitelLTE-M1.com”, USER_ID and
USER_PASS to empty.
And the device reports response string after adding real LTE-M1 parameters when automatic LTE-M1 set is
selected.
4-2. Report Parameter Setting
HDR DEV_ID VER T1 T2 T3 A1 SND_DIST T4 SMS_T1 SMS_T2 SMS_PACK_NO
ANGLE_RPT RPT_TYPE
● Definition : Set parameters related on report interval.
Field Definitions Unit Remark
HDR “ST4500RPT” Command type
DEV_ID 6 char. Device ID
VER “02” Protocol Version
T1 String Sec Interval for sending status report in parking mode
Range : 0 ~ 86400
If 0, report in parking will be sent only one time when
vehicle starts parking.
T2 String Sec Interval for sending status report in driving mode
Range : 0 ~ 60000

ST4500 User Manual
7
If 0, report in driving will be sent only one time when
vehicle starts driving.
T3 String Sec Interval for sending status report in emergency mode
Range : 0 ~ 9999
If 0, emergency report will be sent only one time when
emergency state occurs.
A1 String Number of attempts for emergency report until the device
gets acknowledge from server
If 0, no emergency report will be sent.
SND_DIST String Meter Distance interval for sending status report.
Range : 0 ~ 60000 (60km)
If 0, status report related on moving distance is disabled.
If not 0, stats report is send when traveled distance
reaches predefined SND_DIST.
T4 String Sec Interval for sending keep alive string
SMS_T1 String Min Interval for sending status report in parking mode
SMS_T2 String Min Interval for sending status report in driving mode
SMS_PACK_NO String Report No in one SMS message
ANGLE_RPT String Degree Report STT message if it’s greater than ANGLE_RPT.
0 : Disable
Range : 1 ~ 179
RPT_TYPE String Set the type of reporting.
0: FIFO : First in First Out.
1: LIFO : Last In First Out.
<example>
[command] ST4500RPT;850000;02;180;120;60;3;0;0;0;0;0;0;0
[response] ST4500RPT;Res;850000;010;180;120;60;3;0;0;0;0;0;0;0
<notes>
** If report interval is set big number, network may disconnect LTE-M1 connection because LTE-M1
communication is not progressed for a long time. So, unit may not receive command by LTE-M1. T4 is for
protecting against this disconnection by sending short data with short term.
** Alive report can be sent only when the device has no data to send during T4 interval.
4-3. Event Parameter Setting

ST4500 User Manual
8
HDR DEV_ID VER IGNITION T1 T2
IN1_TYPE IN2_TYPE IN3_TYPE IN1_CHAT IN2_CHAT IN3_CHAT
OUT1_TYPE OUT2_TYPE OUT1_ACTIVE OUT2_ACTIVE
PULSE1_NO PULSE1_ON PULSE1_OFF PULSE2_NO PULSE2_ON PULSE2_OFF
IN4_TYPE IN5_TYPE IN4_CHAT IN5_CHAT BAUD
● Definition : Set parameter related event.
Field Definitions Unit Remark
HDR “ST4500EVT” Command type
DEV_ID 6 char. Device ID
VER “02” Protocol Version
T1 String Sec Delay for entering idle mode after ignition goes to off
T2 String Sec Delay for entering active mode after ignition goes to on
IN1_TYPE ‘0’ ~ ‘7’ 0 = Falling Edge
1 = Rising Edge
2 = Both Edge (Falling & Rising)
3 = Panic Button
4 = Call1 Button
5 = Call 2 Button
6 = Reserved
7 = Anti-Theft Button
13 = Disable Immobilizer if it’s activated by jammer
detector.
Default = ‘3’.
Only the device that included voice option (audio circuit)
can be set to ‘Call1 Button’ or ‘Call2 Button’.
IN1_CHAT String 100ms Input1 chattering time.
Range : 0 ~ 9999
Default = 3 sec.
If 0, input1 is not checked.

ST4500 User Manual
9
OUT1_TYPE ‘0’ ~ ‘5’ 0 = GPIO
1 = immobilizer
2 = Immobilizer & Auto active
Auto active means immobilizer is activated
automatically
when the vehicle starts parking.
3 = Pulse
4 = LED Out for indicating call status. Refer 7-2-3.
5 = Buzzer
OUT1_ACTIVE ‘0’ or ‘1’ 0 = Open when out1 is active
1 = GND when out1 is active
PULSE1_NO String Pulse number when out1 type set to pulse.
Range : 0 ~ 9999
If pulse no is 9999, pulsing runs permanently.
PULSE1_ON String 100ms Active time of pulse1
Range : 0 ~ 9999
It should be set with even number.
PULSE1_OFF String 100ms Inactive time of pulse1
Range : 0 ~ 9999
It should be set with even number.
BAUD ‘0’ ~ ‘4’ It’s available when extra events support RS232.
Baud-rate
0 = No use
1 = 4800bps
2 = 9600bps
3 = 19200bps
4 = 38400bps
5 = 115200bps
If the device does not support RS232, it should be 0.

ST4500 User Manual
10
<example>
[command] ST4500EVT;850000;02;1;60;0;3;2;2;30;20;20;1;0;1;0;0;0;0;0;0;0;0;0;0;0;0
[response] ST4500EVT;Res;850000;010;1;60;0;3;2;2;30;20;20;1;0;1;0;0;0;0;0;0;0;0;0;0;0;0
<notes>
** If IGNITION is set to ‘0’, device doesn’t check driving or parking state of the vehicle. It reports status
string with idle mode always, and cannot support parking lock and the service that enters sleep or deep
sleep automatically when the vehicle is parked.
** If IGNITION is set to ‘2’, the device checks driving or parking state of the vehicle with voltage range of
vehicle’s battery. We named it as ‘Virtual Ignition’. Virtual ignition can operate when the device installed
into real vehicle and it may be need adjustment of voltage range for special vehicle. For setting method,
please refer 6.3.
** In case of pulse, pulse time may have tolerance about dozens of ms.
** Immobilizer, LED Blink line and Buzzer type cannot set both OUT1 and OUT2 simultaneously.
** In case that a event is set to “door sensor”, active state means door is opened.
** If device has the Handsfree kit, e
ach time the volume up button is pressed once, the speaker volume is turned up as below.
0 -> 1 -> 2 -> 3 -> 4 ->5 ->0 -> 1 -> 2 ->3 -> 4 -> 5 - > 0 -> 1 -> ….
(0 : Volume mute, 5 :Max Volume)
Type of no supported event line is fixed to “No Use”.
Below table is for example of 4 line event model.
Field Definitions Unit Remark
HDR “ST4500EVT” Command type
DEV_ID 6 char. Device ID
VER “02” Protocol Version
IGNITION ‘0’ ~ ‘2’ Ignition using state
0 : Not use ignition
1 : Use ignition Line
2 : Virtual ignition(power)
3 : Virtual ignition (motion)
T1 String Sec Delay for entering idle mode after ignition goes to off
T2 String Sec Delay for entering active mode after ignition goes to on

ST4500 User Manual
11
IN1_TYPE ‘0’ ~ ‘5’ 0 = Falling Edge
1 = Rising Edge
2 = Both Edge (Falling & Rising)
3 = Panic Button
4 = Call1 Button
5 = Call 2 Button
6 = Reserved
7 = Anti-Theft Button
13 = Disable Immobilizer if it’s activated by jammer
detector.
Default = ‘3’.
Only the device that included voice option (audio circuit)
can be set to ‘Call1 Button’ or ‘Call2 Button’.
IN1_CHAT String 100ms Input1 chattering time.
Range : 0 ~ 9999
Default = 3 sec.
If 0, input1 is not checked.
OUT1_TYPE ‘7’ 7 = No Use
OUT1_ACTIVE ‘0’ or ‘1’
PULSE1_NO ‘0’
PULSE1_ON ‘0’
PULSE1_OFF ‘0’
BAUD ‘0’ 0 = No use
<example>
[command] ST4500EVT;850000;02;1;60;0;3;2;2;30;20;20;1;0;1;0;0;0;0;0;0;0;0;0;0;0;0
[response] ST4500EVT;Res;850000;010;1;60;0;3;8;8;30;0;0;6;6;1;0;0;0;0;0;0;0;8;8;0;0;0
<notes>
** In case of event 4 line model, IN2_TYPE, IN3_TYPE, IN4_TYPE, IN5_TYPE, OUT1_TYPE and OUT2_TYPE
should be ‘No Use’.
Type and chat time of non used event lines are set to ‘No Use’ and ‘0’ automatically although these filed of
command is set to other value.
4-4. LTE-M1 Parameter Setting
HDR DEV_ID VER SMS_LOCK SMS_MT1 SMS_MT2 SMS_MT3

ST4500 User Manual
12
SMS_MT4 IN_CALL_LOCK CALL_MT1 CALL_MT2 CALL_MT3 CALL_MT4 CALL_MT5
CALL_MO1 CALL_MO2
● Definition : Set parameters related SMS or Call.
Field Definitions Unit Remark
HDR “ST4500LTE-
M1”
Command type
DEV_ID 6 char. Device ID
VER “02” Protocol Version
SMS_LOCK ‘0’ or ‘1’ Lock of Receiving Commands by SMS
Disable (0) / Enable (1)
If enabled, only commands that receives from
SMS_MT1 ~ MT3 number can be accepted.
SMS_MT1 String Up to 20 char. Phone number for SMS commands
SMS_MT2 String Up to 20 char. Phone number for SMS commands
SMS_MT3 String Up to 20 char. Phone number for SMS commands
SMS_MT4 String Up to 20 char. Phone number for SMS commands
IN_CALL_LOCK ‘0’ or ‘1’ Lock of Incoming Call
Disable (0) / Enable (1)
If enabled, only call from CALL_MT1 ~ MT5 number
can be accepted.
CALL_MT1 String Up to 20 char. Phone number for call
CALL_MT2 String Up to 20 char. Phone number for call
CALL_MT3 String Up to 20 char. Phone number for call
CALL_MT4 String Up to 20 char. Phone number for call
CALL_MT5 String Up to 20 char. Phone number for call
CALL_MO1 String Up to 20 char. Phone number for outgoing call from device
CALL_MO2 String Up to 20 char. Phone number for outgoing call from device
<example>
[command] ST4500LTE-M1;850000;02;0;;;;;0;;;;;;;
[response] ST4500LTE-M1;Res;850000;010;0;;;;;0;;;;;;;
<notes>
** When SMS or Call numbers are not set, that field should be empty.

ST4500 User Manual
13
4-5. Service Parameter Setting
HDR DEV_ID VER PARKING_LOCK SPEED_LIMIT PWR_DN CON_TYPE
ZIP GROUP_SEND MP_CHK ANT_CHK BAT_CHK M_SENSOR CALL
GEO_FENCE DATA_LOG ANTITHFT_CNT1 ANTITHFT_CNT2 JAM_DET
JAM_CHK_DIST JAM_CHK_TM
● Definition : Set parameters related report.
Field Definitions Unit Remark
HDR “ST4500SVC” Command type
DEV_ID 6 char. Device ID
VER “02” Protocol Version
PARKING_LOCK ‘0’ or ‘1’ Parking lock enable (1) / disable (0)
If 1, the device checks vehicle position in parking
periodically. When the vehicle goes off some boundary or
starts moving over some velocity, the device reports
parking lock emergency.
SPEED_LIMIT String Km/h Over speed limit
If 0, the device does not check over speed.
If 1 and the vehicle runes over predefined value, device
reports speed alerts once.
PWR_DN ‘0’ ~ ‘2’ Power saving type
0 : Disabled sleep and deep sleep service
1 : Enabled deep sleep
2 : Enabled sleep
CON_TYPE ‘0’ ~ ‘2’ Connection Type with Server
0 = KEEP_CON
1 = KEEP_DISCON
2 = KEEP_NOP
Detail explanation is below.
ZIP ‘0’ or ‘1’ Use Zip
Disable (0) / Enable (1)

ST4500 User Manual
14
GROUP_SEND ‘0’ or ‘1’ Group Send for stored data
0 : Disable
1 : Enable. One packet can include up to 5 reports.
Group send is explained below.
MP_CHK ‘0’ or ‘1’ Main Power Disconnection Check
Disable (0) / Enable (1)
ANT_CHK ‘0’ or ‘1’ GPS Antenna Connection Error Check
Disable (0) / Enable (1)
BAT_CHK ‘0’ or ‘1’ Backup Battery Error Check
Disable (0) / Enable (1)
M_SENSOR ‘0’ ~’4’ Motion Sensor
Motion Collision Shock
0 Disable Disable Disable
1 Enable Disable Disable
2 Disable Disable Enable
3 Enable Disable Enable
4 Disable Enable Disable
5 Enable Enable Disable
6 Disable Enable Enable
7 Enable Enable Enable
CALL ‘0’ or ‘1’ Support Call with headset
Disable (0) / Enable (1)
GEO_FENCE ‘0’ or ‘1’ Support Geo-fence
Disable (0) / Enable (1)
DAT_LOG ‘0’ or ‘1’ Log out with RS232
0 = No Use
1 = Enable getting saved log data by RS232
<example>
[command] ST4500SVC;850000;02;1;120;0;0;0;0;1;1;1;0;0;0;0;0;0;0;0;0
[response] ST4500SVC;Res;850000;010;1;120;0;0;0;0;1;1;1;0;0;0;0;0;0;0;0;0
<notes>
** Function of M_SEMSOR can be used with the model that has motion sensor.
If shock or collision detection is enabled, device will report to server when gets any shock or collision.
** If this parameter has been customized, This table should be disregarded and you should follow
customized
operation document.

ST4500 User Manual
15
CON_TYPE
1. KEEP_CON : The device keeps TCP connection always and can receives a command by LTE-M1.
2. KEEP_DISCON : The device connects TCP connection when the data is sent. After sending, the
device disconnects LTE-M1 and TCP connection if it estimates there is no data for sending within
3minutes. In this case, it cannot receive a command by LTE-M1.
3. KEEP_NOP : The device doesn’t send any report after be installed. When the device enters
emergency mode or receive ‘Start Report’ command by SMS or RS232, it starts report depending
on report parameters. It may be used for saving LTE-M1 fee. Current version cannot support this
option.
Group Send
The device stores data if the vehicle is in no LTE-M1 area. And, the vehicle moves to LTE-M1 available area,
device starts sending stored data.
If group send option is enabled, the device makes 5 reports to one bundle and send these 5 reports at one
time.
Group send is useful to speed up sending.
M_Sensor
1. Collision: The device sending a event when ignition is ON and have a motion.
2. Shock: The device sending a event when ignition is OFF and have a motion.
Jamming detection procedure
JAM_CHK_DIST & JAM_CHK_TM are assist for jamming detection to avoid false detection.
At least, we recommend use JAM_CHK_DIST for safety.
If you use two assist functions, it can detect two case of jamming as follows.
*Case of jamming LTE-M1 only.
Jamming detected -> JAM_CHK_DIST -> JAM_CHK_TM -> Triggered by JAM_DET mode.
*Case of jamming LTE-M1 & GPS.
Jamming detected -> JAM_CHK_TM -> Triggered by JAM_DET mode.
JAM_CHK_DIST : if 0, skip this function.
JAM_CHK_TM : if 0, skip this function.
If disable all of assist functions, just triggered by HAM_DET mode after detected jamming.
In this case, it’s possible to false detection in weak LTE-M1 or strong radio area.
4-6. Additional Parameters

ST4500 User Manual
16
HDR DEV_ID VER SVR_TYPE B_SVR_TYPE UDP_ACK DEV_PORT
● Definition : Setting additional parameter requested.
Field Definitions Unit Remark
HDR “ST4500ADP” Command type
DEV_ID 6 char. Device ID
VER “02” Protocol Version
SVR_TYPE ‘T’ / ‘U’ Server Protocol Type
T : TCP
U : UDP
B_SVR_TYPE ‘T’ / ‘U’ Backup Server Protocol Type
T : TCP
U : UDP
UDP_ACK ‘0’ ~ ‘3’ ACK from Server when UPD is used.
0 : No use
1 : ACK when the server receives reports except alive.
2 : ACK when the server receives reports except STT
and alive report.
3 : ACK when the server receives emergency report.
Command response doesn’t need ACK.
DEV_PORT String Device’s port for receiving command from UDP server.
It can be used only when UDP server is used.
If ‘0’ or empty, the device would use port 9000.
If not zero, the device can receive commands with port
DEV_PORT.
Reserved ‘0’
Reserved ‘0’
Reserved ‘0’
Reserved ‘0’
Reserved ‘0’
Reserved ‘0’
<example>
[command] ST4500ADP;850000;02;U;T;2;9000;0;0;0;0;0;0
[response] ST4500ADP;Res;850000;022;U;T;2;9000;0;0;0;0;0;0
<notes>

ST4500 User Manual
17
This command can be applied from software version 22.
ACK in case of UDP
UDP is protocol that doesn’t check whether the data is transmitted successfully. So, the device checks
completion of sending with ACK depending on UDP_ACK type.
ACK is sent by server when the data is received.
If the ACK is not sent during more than 2 minutes after sending, the device recognizes the data was not
reached to server and sends the data again.
Examples of ACK report are as below.
String Format : “ST4500ACK;850000”
Zip Format : 0x15 0x85 0x00 0x00
It is recommended ACK_TYPE is set to ‘1’ to confirm all data can be transmitted safely.
Report Type UDP_ACK=0 UDP_ACK=1 UDP_ACK=2 UDP_ACK=3
Alive X X X X
STT X O X X
Event, Alert, Etc. X O O X
Emergency X O O O
4-7. Set Parameters of Main Voltage
HDR DEV_ID VER CHR_STOP_THRES_12 DECIDE_BAT_12
OPERATION_STOP_THRES_12 IGNDET_H IGNDET_L
● Definition : Set some value of main voltage.
Field Definitions Remark
HDR “ST4500MBV” Command type
DEV_ID 6 char. Device ID

ST4500 User Manual
18
VER “02” Protocol Version
CHR_STOP_THRES_12 String Voltage value to stop backup battery charging in 12V
vehicle.
DECIDE_BAT_12 String Voltage value to check whether the vehicle’s battery is
12V.
OPERATION_STOP_THRES_12 String Voltage value to protect vehicle battery.
The device operation stops if car battery voltage is lower
than this value in vehicle that has 12V power.
IGNDET_H String
In case of virtual ignition, the vehicle can recognize
driving state when vehicle power is more than
IGNDET_H.
Default = ‘0’
IGNDET_L String In case of virtual ignition, the vehicle can recognize
parking state when vehicle power is less than IGNDET_L.
Default = ‘0’
<example>
[command] ST4500MBV;850000;02;10.5;22;19;8.00;18.00;0;0
[response] ST4500MBV;Res;850000;122;10.5;22;19;8.00;18.00;0;0
<note>
IGNDET_H and IGNDET_L are ‘0’, device check parking and driving automatically.
4-8. Set Parameters of Motion Sensor
HDR DEV_ID VER CHR_STOP_THRES_12 DECIDE_BAT_12 OPERATION_STOP_THRES_12
IGNDET_H IGNDET_L VI_ON_THRES VI_ON_DELAY
VI_ON_PERCENT VI_OFF_THRES VI_OFF_DELAY VI_OFF_PERCENT
● Definition : Set motion sensor parameters
Field Definitions Unit Remark
HDR “ST4500MSR” Command type
DEV_ID 6 char. Device ID
VER “02” Protocol Version
SHOCK_DELAY String Sec. Delay for entering shock detection mode after ignition off
0 – Disable
Range : 1 ~ 21600 (5hour)

ST4500 User Manual
19
Recommend : 600 ( 10 min.)
MOTION_THRES String Step Detection level of shock violation.
Range : 0.04 ~ 2.0
Recommend : 0.04
SHOCK_THRES String Step Detection level of shock violation.
Range : 0.04 ~ 2.0
Recommend : 0.04
COLL_THRES String Step Gravity for collision report.
Range : 0.1 ~ 2.0
Recommend : 0.7
VI_ON_THRES String 1/255G Threshold value for Motion Virtual Ignition On
Range : 3~50
Default : 5
VI_ON_DELAY String Sec. Delay time for Motion Virtual Ignition On
Range : 3~999
Default : 10
VI_ON_PERCENT String % Percent for Motion Virtual Ignition On.
Range : 30~100
Default: 70
VI_OFF_THRES String 1/255G Threshold value for Motion Virtual Ignition Off
Range : 3~50
Default : 5
VI_OFF_DELAY String Sec. Delay time for Motion Virtual Ignition Off
Range : 3~999
Default : 10
VI_OFF_PERCENT String % Percent for Motion virtual Ignition Off.
Range : 30 ~ 100
Default : 70
<example>
[command] ST4500MSR;;02;600;0.04;0.04;0.7;5;10;70;5;10;70
[response] ST4500MSR;Res;852588;128;600;0.04;0.04;0.70;5;10;70;5;10;70
<notes>
* For the shock level, we recommend it to set to 0.04. if it's over than 0.04, the sensor will be more
insensitive
as it for shock detection.

ST4500 User Manual
20
4-11. Control Command
HDR DEV_ID VER CMD_ID
● Definition : Controls some functions.
Field Definitions Unit Remark
HDR “ST4500CMD” Command type
DEV_ID 6 char. Device ID
VER ‘01’ Protocol Version
CMD_ID String Control command content
Caution : If it’s not correct the Unit ID, ignored.
4-11-1. Status Request
● Definition : Location poll, request of the status report.
Field Definitions Unit Remark
CMD_ID “StatusReq” Status request
If received, the device sends status string instantly.
<example>
<example>
[command] ST4500CMD;850000;02;StatusReq
[response] ST4500STT;850000;010;20090724;07:12:16;00129;+37.479995;+126.885815;000.029;000.00;
7;1;0;15.33;100000;2;0002
4-11-2. Reset
● Definition : Reset all of parameters.
Field Definitions Unit Remark
CMD_ID “Reset” Reset
Initialize all parameters with factory value and reboot the