Sun-Tech ST25T User manual

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Operation Manual
ST25T
Suntech International Ltd.
CONFIDENTIAL DOCUMENT
This document belongs to intellectual property of Suntech
International Ltd. and shall neither be copied nor be given to any
3rd parties without prior written consent from the company.
DO NOT MAKE ANY COPIES

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Table of Contents
1. Introduction ........................................................................................................................................ 4
2. Overview ............................................................................................................................................. 4
2-1. Parameter change ........................................................................................................................ 4
2-2. Features ....................................................................................................................................... 5
3. Event Cables ...................................................................................................................................... 6
4. Commands ......................................................................................................................................... 8
4-1. From Host to ST25T ..................................................................................................................... 8
4-1-1. Presence Request ...................................................................................................................................... 8
4-1-2. Handshake Message Acknowledge ............................................................................................................ 9
4-1-3. Version Request ......................................................................................................................................... 9
4-1-4. Host Parameter Change ............................................................................................................................. 9
4-1-5. Reset ......................................................................................................................................................... 11
4-1-6. Disconnected Check ................................................................................................................................. 11
4-1-7. Uart Fuel Sensor Param Request ............................................................................................................. 11
4-2. From ST25T to Host ................................................................................................................... 12
4-2-1. Handshake Message ................................................................................................................................ 12
4-2-2. Version Request Response ...................................................................................................................... 12
4-2-3. Disconnected Check Acknowledge .......................................................................................................... 12
4-2-4. Uart Fuel Sensor Connected Event .......................................................................................................... 12
4-2-5. Uart Fuel Sensor Disconnected Event ...................................................................................................... 13
4-2-6. Uart Fuel Sensor Upper Event .................................................................................................................. 13
4-2-7. Uart Fuel Sensor Lower Event .................................................................................................................. 13
4-2-8. Uart Fuel Sensor Error Event .................................................................................................................... 14
4-2-9. Uart Fuel Sensor Param Request Response ........................................................................................... 14
4-2-10. Input State Event .................................................................................................................................... 15
Revisions .............................................................................................................................................. 16

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Disclaimer
We, at Suntech, announce that this document and all other related products (i.e. device, firmware, and software)
have been developed by the company, Suntech International Ltd., which is hereinafter referred to as “Suntech”.
The information in this manual is believed to be accurate and reliable at the time of releasing. We, at Suntech, also
assume no responsibility for any damage or loss resulting from the use of this manual, and expressly disclaim any
liability or damages for loss of data, loss of use, and property damage of any kind, direct, incidental or
consequential, in regard to or arising out of the performance or form of the materials presented herein or in any
software program(s) that may accompany this document. When this document is released, it is most compatible
with a specified firmware version. Now that the functionalities of the devices are being developed and improved
continuously from time to time by Suntech, any alteration on the protocol, the firmware functions, the hardware
specifications of the product is subject to change without prior notice.
Copyright
We, at Suntech, notify that Suntech holds all parts of intellectual rights applicable in the copyright laws in all the
countries. The information contained in this document cannot be reproduced in any form without prior written
consent made by Suntech. Any software programs that might accompany this document can be used only in
accordance with any license agreement(s) between the purchaser and Suntech.
Warning
Our customers are required to be aware that connecting the wire inputs can be hazardous to both of the installer
and your vehicle’s electrical system(s) if not done by an experienced installer. This document assumes you are
aware of the inherent dangers of working in installing the device on the vehicle(s) and the machinery.
Document Amendments
When it comes to the firmware version column with specific firmware number, any amendment(s) on the comments
column should be made on this relevant firmware version (and the versions thereafter). Before applying any
changes made in this protocol, you are required to make sure that you have upgraded the firmware suitable for the
specified version.

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1. Introduction
The ST25T is highly featured multi-functional telematics box sending values of external sensors a tracking device
such as ST600M/ST600MD or ST4300. By being connected with a tracking device such as ST600M/ST600MD or
ST4300, it provides to the tracking device any information of fuel level values and the tracking device reports which
can be sent to the server via the tracking device.
2. Overview
The ST25T device from Suntech supports two RS232 and one RS485 interface ports as well as two ADC or INPUT
ports. The diagram below shows how the Suntech ST25T device is connected to external sensors and device:
2-1. Parameter change
Parameters which have already been set on the device can be changed via RS232 connected with PC if a user
needs to do so. Some controlling functions can also be implemented in the same way.
Please refer to the Commands Sections 4 below for details on the commands required to change these parameters.

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2-2. Features
Key features of the ST25T device are as follows:
- Power Saving Modes (Power Down Mode)
The device will go to sleep when host go to sleep or deepsleep to prevent draining the vehicle battery.
- LED Indicators
Red LED:
Main mcu data transmitting & receiving operation indication.
Blue LED:
Sub mcu data transmitting & receiving operation indication.
- RS232 interface
It handles RS232 sensor and device data communication.
- RS485 interface
It handles RS485 fuel sensor data communication.
The maximum number of RS485 fuel sensors supported by the ST25T device is four.
- ADC or INPUT ports
Device has:
 2 ADC ports
 2 INPUT ports
- Upgrading Firmware
Device firmware can be upgraded to provide the user with newly implemented services through the host
RS232 connection. (Refer to Section 7)
Host RS232 baud rate is 115200 bps for upgrading firmware.

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3. Event Cables
Event cable has 14 wires.

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4. Omnicomm Fuel Sensor Setting
If you use omnicomm fuel sensor, you will have to set to like below:
1. Network address : 0 ~ 6
2. Baud rate : 9600 or 19200 or 38400 or 115200 bps
3. Automatic data Output : Binary
4. Interval of output : 5
To configure the fuel sensor, download the omnicomm configurator program from the URL below.
Downloadable URL :
https://www.omnicomm-world.com/fms-providers/resource-center/?group=386289&field=&type=387330
The ST25T device scans omnicomm fuel sensor network address from 0 to 6 only.
The data output mode and output interval of the omnicomm fuel sensor are set in the ST25T device.

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5. Commands
All command and response string is ended with CR/LF characters.
5-1. From Host to Device
5-1-1. Presence Request
F
ield
Value
F
ormat
Description
CMD $REQ_PRESENCE String Command
RS232_EXT1_DEV 0 ~ 3 1byte int RS232 Ext 1 Device
0 = None
1 = Omnicomm Fuel Sensor
2 = RFID
3 = Serial Camera
RS232_EXT2_DEV 0 ~ 3 1byte int RS232 Ext 2 Device
0 = None
1 = Omnicomm Fuel Sensor
2 = RFID
3 = Serial Camera
RS232_EXT1_BAUD 0 ~ 6 1byte int RS232 Ext1 Baudrate
0 = None
1 = 2400 bps
2 = 4800 bps
3 = 9600 bps
4 = 19200 bps
5 = 38400 bps
6 = 115200 bps
RS232_EXT2_BAUD 0 ~ 6 1byte int RS232 Ext2 Baudrate
0 = None
1 = 2400 bps
2 = 4800 bps
3 = 9600 bps
4 = 19200 bps
5 = 38400 bps
6 = 115200 bps
RS232_EXT1_FUEL_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs232 ext1 fuel
level for alert report
RS232_EXT2_FUEL_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs232 ext2 fuel
level for alert report
RS485_FUEL_BAUD 0 ~ 6 1byte int RS485 Fuel Sensor Baudrate
RS485_FUEL1_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs485 fuel1 level
for alert report
RS485_FUEL2_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs485 fuel2 level
for alert report
RS485_FUEL3_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs485 fuel3 level
for alert report
RS485_FUEL4_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs485 fuel4 level
for alert report
ADC1_USING 0 ~ 1 1byte int Support ADC 1
0 = Disable, 1 = Enable
ADC2_USING 0 ~ 1 1byte int Support ADC 2
0 = Disable, 1 = Enabl
INPUT1_TYPE 0 ~ 3 1byte int Support Input 1

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0 = None
1 = Falling Edge
2 = Rising Edge
3 = Both Edge
INPUT1_CHAT 0 ~ 9999 2bytes int Input 1 chattering time
Default = 3 sec (unit : 100 ms)
If 0, input 1 is not checked.
INPUT2_TYPE 0 ~ 3 1byte int Support Input 2
0 = None
1 = Falling Edge
2 = Rising Edge
3 = Both Edge
INPUT2_CHAT 0 ~ 9999 2bytes int Input 1 chattering time
Default = 3 sec (unit : 100 ms)
If 0, input 2 is not checked.
END_OF_LINE \r\n String
[Command] $REQ_PRESENCE;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0
5-1-2. Handshake Message Acknowledge
F
ield
Value
F
ormat
Description
CMD $ACK_HANDSHAKE String Command
END OF LINE \r\n String
[Command] $ACK_HANDSHAKE
5-1-3. Version Request
F
ield
Value
F
ormat
Description
CMD $CMD_REQ_VERSION String Command
END OF LINE \r\n String
[Command] $CMD_REQ_VERSION
[Response] $RES_REQ_VERSION;ST25T;M.01.00.00;M.01.00.00 (Refer to Section 5-2-2)
5-1-4. Host Parameter Change
F
ield
Value
F
ormat
Description
CMD $CMD_CHANGE_PARAM String Command
RS232_EXT1_DEV 0 ~ 3 1byte int RS232 Ext 1 Device
0 = None
1 = Omnicomm Fuel Sensor
2 = RFID

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3 = Serial Camera
RS232_EXT2_DEV 0 ~ 3 1byte int RS232 Ext 2 Device
0 = None
1 = Omnicomm Fuel Sensor
2 = RFID
3 = Serial Camera
RS232_EXT1_BAUD 0 ~ 6 1byte int RS232 Ext1 Baudrate
0 = None
1 = 2400 bps
2 = 4800 bps
3 = 9600 bps
4 = 19200 bps
5 = 38400 bps
6 = 115200 bps
RS232_EXT2_BAUD 0 ~ 6 1byte int RS232 Ext2 Baudrate
0 = None
1 = 2400 bps
2 = 4800 bps
3 = 9600 bps
4 = 19200 bps
5 = 38400 bps
6 = 115200 bps
RS232_EXT1_FUEL_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs232 ext1 fuel
level for alert report
RS232_EXT2_FUEL_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs232 ext2 fuel
level for alert report
RS485_FUEL_BAUD 0 ~ 6 1byte int RS485 Fuel Sensor Baudrate
RS485_FUEL1_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs485 fuel1 level
for alert report
RS485_FUEL2_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs485 fuel2 level
for alert report
RS485_FUEL3_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs485 fuel3 level
for alert report
RS485_FUEL4_
ALT_LEVEL
0 ~ 4095 2bytes int Value of changing rs485 fuel4 level
for alert report
ADC1_USING 0 ~ 1 1byte int Support ADC 1
0 = Disable, 1 = Enable
ADC2_USING 0 ~ 1 1byte int Support ADC 2
0 = Disable, 1 = Enable
INPUT1_TYPE 0 ~ 3 1byte int Support Input 1
0 = None
1 = Falling Edge
2 = Rising Edge
3 = Both Edge
INPUT1_CHAT 0 ~ 9999 2bytes int Input 1 chattering time
Default = 3 sec (unit : 100 ms)
If 0, input 1 is not checked.
INPUT2_TYPE 0 ~ 3 1byte int Support Input 2

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0 = None
1 = Falling Edge
2 = Rising Edge
3 = Both Edge
INPUT2_CHAT 0 ~ 9999 2bytes int Input 1 chattering time
Default = 3 sec (unit : 100 ms)
If 0, input 2 is not checked.
END OF LINE \r\n String
[Command] $CMD_CHANGE_PARAM;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0
5-1-5. Reset
F
ield
Value
F
ormat
Description
CMD $CMD_RESET String Command
END OF LINE \r\n String
[Command] $CMD_RESET
5-1-6. Disconnected Check
F
ield
Value
F
ormat
Description
CMD $CMD_DISCON_CHECK String Command
END OF LINE \r\n String
[Command] $CMD_DISCON_CHECK
[Response] $ACK_DISCON_CHECK;ST25T (Refer to Section 5-2-3)
5-1-7. Uart Fuel Sensor Param Request
F
ield
Value
F
ormat
Description
CMD $REQ_FUEL_PARAM String Command
END OF LINE \r\n String
[Command] $REQ_FUEL_PARAM
[Response] $RES_FUEL_PARAM;ST25T;0;0;0;0;0;0;0;0;0;0;0;0 (Refer to Section 5-2-9)

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5-2. From Device to Host
5-2-1. Handshake Message
F
ield
Value
F
ormat
Description
CMD $MSG_HANDSHAKE String Command
MODEL ST25T String Model Name
END OF LINE \r\n String
[Command] $MSG_HANDSHAKE;ST25T
5-2-2. Version Request Response
F
ield
Value
F
ormat
Description
CMD $RES_REQ_VERSION String Command
MODEL ST25T String Model name
MAIN_MCU_VERSION M.01.00.00 String
SUB_MCU_VERSION M.01.00.00 String
END OF LINE \r\n String
[Command] $RES_REQ_VERSION;ST25T;M.01.00.00;M.01.00.00
5-2-3. Disconnected Check Acknowledge
F
ield
Value
F
ormat
Description
CMD $ACK_DISCON_CHECK String Command
MODEL ST25T String Model name
END OF LINE \r\n String
[Command] $ACK_DISCON_CHECK;ST25T
5-2-4. Uart Fuel Sensor Connected Event
F
ield
Value
F
ormat
Description
CMD $EVT_UART_FUEL_CON String Command
MODEL ST25T String Model name
FUEL_NUM 0 ~ 5 1byte int Fuel sensor number
0 = RS232 Fuel 1
1 = RS232 Fuel 2
2 = RS485 Fuel 1
3 = RS485 Fuel 2
4 = RS485 Fuel 3
5 = RS485 Fuel 4
FUEL_LEVEL 0 ~ 4095 2bytes int Fuel sensor level

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END OF LINE \r\n String
[Command] $EVT_UART_FUEL_CON;ST25T;0;0
5-2-5. Uart Fuel Sensor Disconnected Event
F
ield
Value
F
ormat
Description
CMD $EVT_UART_FUEL_DISCON String Command
MODEL ST25T String Model name
FUEL_NUM 0 ~ 5 1byte int Fuel sensor number
0 = RS232 Fuel 1
1 = RS232 Fuel 2
2 = RS485 Fuel 1
3 = RS485 Fuel 2
4 = RS485 Fuel 3
5 = RS485 Fuel 4
FUEL_LEVEL 0 2bytes int Fuel sensor level
END OF LINE \r\n String
[Command] $EVT_UART_FUEL_DISCON;ST25T;0;0
5-2-6. Uart Fuel Sensor Upper Event
F
ield
Value
F
ormat
Description
CMD $EVT_UART_FUEL_UPPER String Command
MODEL ST25T String Model name
FUEL_NUM 0 ~ 5 1byte int Fuel sensor number
0 = RS232 Fuel 1
1 = RS232 Fuel 2
2 = RS485 Fuel 1
3 = RS485 Fuel 2
4 = RS485 Fuel 3
5 = RS485 Fuel 4
FUEL_LEVEL 0 ~ 4095 2bytes int Fuel sensor level
END OF LINE \r\n String
[Command] $EVT_UART_FUEL_UPPER;ST25T;0;0
5-2-7. Uart Fuel Sensor Lower Event
F
ield
Value
F
ormat
Description
CMD $EVT_UART_FUEL_LOWER String Command
MODEL ST25T String Model name
FUEL_NUM 0 ~ 5 1byte int Fuel sensor number
0 = RS232 Fuel 1

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1 = RS232 Fuel 2
2 = RS485 Fuel 1
3 = RS485 Fuel 2
4 = RS485 Fuel 3
5 = RS485 Fuel 4
FUEL_LEVEL 0 ~ 4095 2bytes int Fuel sensor level
END OF LINE \r\n String
[Command] $EVT_UART_FUEL_LOWER;ST25T;0;0
5-2-8. Uart Fuel Sensor Error Event
F
ield
Value
F
ormat
Description
CMD $EVT_UART_FUEL_ERROR String Command
MODEL ST25T String Model name
FUEL_NUM 0 ~ 1 1byte int Fuel sensor number
0 = RS232 Fuel 1
1 = RS232 Fuel 2
ERROR_NUM 0 ~ 1 1byte int Fuel error number
0 = Fuel net address scan fail
1 = Fuel max level excess
END OF LINE \r\n String
[Command] $EVT_UART_FUEL_ERROR;ST25T;0;0
5-2-9. Uart Fuel Sensor Param Request Response
F
ield
Value
F
ormat
Description
CMD $RES_FUEL_PARAM String Command
MODEL ST25T String Model name
RS232_FUEL1_LEVEL 0 ~ 4095 2bytes int RS232 fuel 1 level
RS232_FUEL2_LEVEL 0 ~ 4095 2bytes int RS232 fuel 2 level
RS485_FUEL1_LEVEL 0 ~ 4095 2bytes int RS485 fuel 1 level
RS485_FUEL2_LEVEL 0 ~ 4095 2bytes int RS485 fuel 2 level
RS485_FUEL3_LEVEL 0 ~ 4095 2bytes int RS485 fuel 3 level
RS485_FUEL4_LEVEL 0 ~ 4095 2bytes int RS485 fuel 4 level
RS232_FUEL1_STATUS 0 ~ 1 1byte int RS232 fuel 1 status
RS232_FUEL2_STATUS 0 ~ 1 1byte int RS232 fuel 2 status
RS485_FUEL1_STATUS 0 ~ 1 1byte int RS485 fuel 1 status
RS485_FUEL2_STATUS 0 ~ 1 1byte int RS485 fuel 2 status
RS485_FUEL3_STATUS 0 ~ 1 1byte int RS485 fuel 3 status
RS485_FUEL4_STATUS 0 ~ 1 1byte int RS485 fuel 4 status
END OF LINE \r\n String
[Command] $RES_REQ_FUEL_PARAM;ST25T;0;0;0;0;0;0;0;0;0;0;0;0

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5-2-10. Input State Event
F
ield
Value
F
ormat
Description
CMD $EVT_INPUT_STATE String Command
MODEL ST25T String Model name
INPUT_NUM 0 ~ 1 1byte int Fuel sensor number
0 = INPUT 1
1 = INPUT 2
STATE 0 ~ 1 1byte int Input state
0 = Falling
1 = Rising
END OF LINE \r\n String
[Command] $EVT_INPUT_STATE;ST25T;0;0

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Revisions
Rev. No.
Date
Modifications were made on:
Writer
1.00 19-01-15 Construct Protocol. JH Sim
- End of the Document -
Information to the user.
NOTE: This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference
in which case the user will be required to correct the interference at his own expense.
Caution
Any changes or modifications to the equipment not expressly approved by the
party responsible for compliance could void the user’s authority to operate the
equipment.
FCC Compliance Information : This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
§15.21 Information to user.
The users manual or instruction manual for an intentional or unintentional radiator shall
caution the user that changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
In cases where the manual is provided only in a form other than paper, such as on a
computer disk or over the Internet, the information required by this section may be
included in the manual in that alternative form, provided the user can reasonably be
expected to have the capability to access information in that form.