King Pigeon S175 User manual

S175
S375
User Manual
Ver 1.5
Date Issued: 2020-07-29
King Pigeon Hi-Tech. Co., Ltd.
www.IOT-Solution.com
GSM 3G 4G LTE
Cellular IoT Gateway

Page 2of 55 King Pigeon Hi-Tech. Co., Ltd. Ver 1.3
GSM/SMS/GPRS/3G/4G
Cellular IoT Gateway
Table of contents
1. Brief introduction......................................................................................................................................................... 5
2.Safety Directions........................................................................................................................................................... 5
3. Standard Packing List....................................................................................................................................................5
4. Features and Specification........................................................................................................................................... 6
4. 1 Mainly Features.................................................................................................................................................6
4. 2 Specifications.....................................................................................................................................................7
5. Physical Layout and Installation Diagram.................................................................................................................... 8
5.1 Control Unit size................................................................................................................................................. 8
5.2 Interface definition.............................................................................................................................................8
5.3 LED Indicator Definition..................................................................................................................................... 9
6. Settings&Operation....................................................................................................................................................11
6.1 Start to Configure............................................................................................................................................. 11
6.2 Setting Self-checking........................................................................................................................................ 13
6.3 Configuration software interface and running................................................................................................ 14
Basic Settings..........................................................................................................................................14
Number Settings.....................................................................................................................................15
T&H Trigger Settings...............................................................................................................................16
T&H Alarm Settings................................................................................................................................ 17
Timer Settings.........................................................................................................................................18
Interlock Settings....................................................................................................................................19
RS485 Serial Port Settings...................................................................................................................... 19
Slave Settings..........................................................................................................................................20
Register Settings..................................................................................................................................... 22
Cellular network Settings....................................................................................................................... 22
Ethernet Settings(only for S37X)............................................................................................................24
Historical Record.....................................................................................................................................25
7.Configuration and Reset..............................................................................................................................................26
7.1 Export Profile....................................................................................................................................................26
7.2 Load Profile.......................................................................................................................................................27
7.3 Reset.................................................................................................................................................................28
8. Connection and Application.......................................................................................................................................28
8.1 Wire Connection.............................................................................................................................................. 28
8.2 Quickly Verify Device Communication Function............................................................................................. 29
8.3 Modbus RTU Slave Application........................................................................................................................30

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8.4 Modbus RTU Master Application.....................................................................................................................33
8.5 Modbus TCP Master Application..................................................................................................................... 39
8.6 Transparent Transmission DTU Application.....................................................................................................45
8.7 Device connect to cloud Application............................................................................................................... 46
9. Device SMS Command............................................................................................................................................... 48
10.S17X/S37X Register Address..................................................................................................................................... 50
11.Slave Mapping Register Address...............................................................................................................................50
12. MQTT Write Identifier & Cloud Platform Read........................................................................................................52
13. Upgrade Firmware....................................................................................................................................................54
14. Cellular Module Upgrade......................................................................................................................................... 55
15. Warranty...................................................................................................................................................................55
【UPGRADE HISTORY】
DATE
FIRMWARE VERSION
HARDWARE VERSION
DESCRIPTION
2018.12.10
V 25
V1.3
Modified the start address of the 32-bit map
register in Appendix C
2019.03.06
V 26
V1.3
Network port and cellular add MQTT
connection to cloud platform
2019.04.20
V27
V1.3
Adding S175E,375 E Series Products
2019.8.15
V28
V1.3
Adding the function of Ethernet as
Modbus TCP master
2019.9.23
V28
V1.3
1.Modified Cellular network Settings default
parameter
2.Adding MQTT protocol instruction
2020.04.09
V28
V1.3
Revised MQTT data release format
2020.7.29
V28
V1.3
Remove S173 174,S373 S374
This handbook has been designed as a guide to the installation and operation of S17X/S37X
GSM/SMS/GPRS/3G/4G Cellular IoT Gateway.
Statements contained in the handbook are general guidelines only and in no way are designed to supersede the
instructions contained with other products.
We recommend that the advice of a registered electrician be sought before any Installation work commences.
King Pigeon Hi-Tech.Co., Ltd, its employees and distributors, accept no liability for any loss or damage including
consequential damage due to reliance on any material contained in this handbook.
King Pigeon Hi-Tech.Co., Ltd, its employees and distributors, accept no liability for GSM Network upgrading or
SIMCard upgrading due to the technology specifications contained in this handbook.

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Model List
Model
GSM/3G
/4G
AI/DIN/DO
TH
RS485
Ethernet
SD Card
Extend I/O tags
Boolean
16-Bit
32-Bit
64-Bit
S175
√
×
1
2
×
8G
64
128
64
64
S375
√
×
1
2
1
8G
64
128
64
64
S175E
×
×
1
2
×
8G
64
128
64
64
S375E
×
×
1
2
1
8G
64
128
64
64
Notice
1. Default version is GSM/GPRS module inside.
2. For 3G WCDMA, 4G LTE version, please tell our sales where would you like to use them.
3. The S175 ,375E series has no communication module, so it can't call and SMS to alarm.

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Cellular IoT Gateway
1. Brief introduction
The Cellular IoT Gateway S17X/S37X is an industrial class, high reliability, high stability, and programmable Remote
Terminal Unit (RTU). It embedded 32-Bit High Performance Microprocessor MCU, inbuilt industrial Cellular
module. It provides 1 ambient sensor input for monitoring onsite temperature and humidity, and RS485 serial port,
supports 128/224/320 mapping registers via Modbus RTU protocol. It can monitor and operate the I/O ports by
SMS, APP, Web Server, internet, timers and programmed inter-lock events automatically.
The Cellular IoT Modbus Gateway S17X/S37X inbuilt TCP/IP protocol stack make it suitable for internet of things
(IoT) applications, it can be easily to operate by the provided cloud, app, and web server, or integrated to you IoT
applications according to Ethernet or the TCP/UDP protocol, or integrated to SCADA systems by standard Modbus
TCP protocol, too. This is very useful if you need remote control onsite devices with low cost solution.
The Cellular IoT Modbus Gateway S17X/S37X is designed for working in the harsh industrial application
environment, widely used in a variety of industrial automation, security monitoring system, automatically
measurement and control system, BTS monitoring, remote data acquisition, telemetrically systems, automatically
control system. It can be used as a remote RS485 data transmission, remote extend I/O tags control, remote smart
PLC, meters monitoring.
The Cellular IoT Modbus Gateway S17X/S37X supports 2 RS485 transparent data transmission and performs as
Modbus Slave over GPRS/3G/4G/NB-IoT network and RS485 serial port. Moreover, the Cellular IoT Modbus RTU
can be used as Modbus RTU Master to reading smart meters, I/O modules, PLC, and converts to SMS alert once
triggered the threshold value, or transmit data to remote server over GPRS/3G/4G/NB-IOT network. 2 RS485 ports
can be used one as Modbus RTU Master and the other as Slave at the same time.
Typically applications:
BTS Monitoring, Security Alarm System applications, Supervision and monitoring alarm systems, Automatic
monitoring system, Vending Machines security protection, Pumping Stations, Tanks, Oil or Water levels, Buildings
and Real Estate, Weather Stations, River Monitoring and Flood Control, Oil and gas pipelines, Corrosion protection,
Temperatures, water leakage applications, Wellheads, boat, vehicle, Energy saving, street lights control system,
Valve controls, Transformer stations, Unmanned machine rooms, Control room application, Automation System,
M2M, etc.
2.Safety Directions
Safe Startup
Do not use the unit when using GSM/3G/4G equipment is prohibited or might bring disturbance or
danger.
Interference
All wireless equipment might interfere network signals of the unit and influence its performance.
3. Standard Packing List
Gateway X1; AC/DC Adaptor X1; GSM/3G/4G Antenna X1;User Manual X1; PC Configurator X1 .
Note: The package does not include any SIM card.
Optional: 35mm Standard DIN rail fixed Bracket

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4. Features and Specification
4. 1 Mainly Features
GSM/GPRS/3G/4G network communication, can be operated from anywhere, no distance limitation;
Wide range power supply 9~36VDC with over voltage and phase-reversal protection;
Embedded ARM Cortex -M4 32 Bit RISC Core, 168 MHz inside, RTOS system, reliable performance
with in-built watchdog;
1 temperature & humidity sensor input for monitoring onsite environment, the sensor model is AM2301,
Measures temperatures from -40-80°C,0.5°C accuracy, Relative Humidity from 0-99RH%, accuracy is 3%;
Inbuilt 8G SD card to save up to tens of thousands historical data and events;
Supports dual sim card,improve communication quality;
2 RS485 port supports Modbus RTU Master and Slave, can be used to extend I/O ports or meters;
Powerful SMS function: Threshold high SMS alert, SMS set, SMS inquiry, SMS command for Modbus PLC..., and
SMS monitoring communication with Slaves;
Provides 1 channel 9~36VDC power source output for external device, saving wiring cost;
Automatically resend the data while communication interrupt or failure, and failure will alert by SMS text to
users;
Supports remotely restart the RTU, and configure& operate it by SMS commands remotely;
10 SMS Alert and auto dial numbers for receiving alarm message, can program to receive specified alarm
message;
Inbuilt inter-lock logic programmer and powerful timer program function;
Modular structure design, replace a module can upgrade the network from 2G to 3G/4G or 3G to 4G;
Support SMS, dial, GPRS, 3G , 4G network for alert, USB port for configuration and upgrade firmware;
Inbuilt large capacity automatically rechargeable backup battery, alert when external power failure;
Support TCP/UDP, Modbus TCP, Modbus RTU over TCP, King Pigeon IoT RTU protocol and data transparent
transmission function;
Using metal shell, protection class IP30. Metal shell and system security isolation, especially suitable for
industrial applications in the field;
L70 * W88 * H30mm, compatible wall installation and DIN35mm industrial rail installation.

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4. 2 Specifications
Item
Reference Scope
DC Power supply
Standard adapter: DC 12V/1.5A Range 9-36VDC
Power
consumption
Standby:12V/70mA; Working Max.: 12V/300mA
GSM Frequency
850/900/1800/1900Mhz
3G/4G/NB-Iot
Optional: WCDMA/TDD-LTE/FDD-LTE/NB-IoT
TCP/IP stack
TCP,UDP
SIM interface
Dual SIM Card,supporting 3V and 1.8V SIM Card
External antenna
SMA Antenna interface, 50 Ohm, Gain: 3dB
Serial Interfaces
1 USB Port
Protocols
SMS, GPRS UDP,TCP, Modbus RTU, Modbus TCP and more
equipment protocols can be added according to requirements.
Ethernet
(only for S37X)
1 RJ45 Ethernet port for connect internet, WAN or LAN.
RS485
2 RS485, Support Transparent transmission and Modbus RTU
Slave, Modbus RTU Master.
Temp.&Hum Inputs
Temperature range: -40°C to +80°C, Humidity Range:
0~100%RH;
Power Outputs
1 Port, for external device;
Mapping Registers
Max.320
Memory Capacity
Internal 8G SD card inside, can save the data for 100000events.
Backup Battery
3.7V 1200mAH
Temperature range
-10°C ~ +70 °C
Humidity range
Relative humidity 95% (condensation free)
Exterior dimension
70mm*88mm*30mm
Net Weight
500g

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5. Physical Layout and Installation Diagram
5.1 Control Unit size
(Front view) (Left side view) (Right side view)
(Upward view) (Bottom view)
5.2 Interface definition
Function
Description
Top view

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GND
GND for input
DATA
Temperature/humidity data
VCC
Power for Tem/Hum sensor
AM230x
Function
Description
GND
GND
485_1 B
485_1 B data
485_1 A
485_1 A data
GND
GND
485_2 B
485_2 B data
485_2 A
485_2 A data
DC_OUT -
Power source output port,
Negative electrode.
DC_OUT +
Power source output port,
positive electrode.
DC_IN -
External DC Power input
port,negative electrode.
DC_IN +
External DC Power input
port,positive electrode.
5.3 LED Indicator Definition

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LED Indicator Definition
Cellular network indicator. When 2G register network, off 2 seconds, on 0.2s and
so on; When 3G 4G register network, on 2s, off 0.2s...Flicks quickly means data
transmission.
Power
RTU status indicator, LED ON when switched RTU on..
Alarm
Alarm Indicator, alarm will ON and flick. Normally is OFF;
Arm
Arm/Disarmed Indicator, Arm is ON, disarmed is OFF.
Run
RTU running status indicator, ON or OFF stands for RTU halted, flicks slowly stands for
RTU running.
RS485-1
When transmitting data by RS485, the LED will flick, otherwise, it is off.
RS485-2
When transmitting data by RS485, the LED will flick, otherwise, it is off.
Switch & Button Definition
Power Switch
For switch ON or OFF the RTU
Upgrade
Firmware Switch
For upgrade firmware purpose only. Only when upgrade new firmware version will use it,
otherwise keep it at Work Side all the time.
SIM Card Slot
SIM Card Slot
For SIM Card Installation, only supports 1.8V/3V SIM Card
Ethernet Connector Definition(only for S37X)

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Ethernet
(Only for S37x)
Rate indicator: ON stands for 100Mbps;OFF stands for 10Mbps
Link indicator:ON means connecting;OFF means disconnect;flick means transmitting
data
ATN Port Connector Definition
ATN
GSM/3G/4G Antenna connector, 50Ohm, SMA male.
USB Port Connector Definition
USB
USB port, for configuration and upgrading firmware and exporting historical data;
6. Settings&Operation
The Cellular IoT Gateway is user-friendly design. The user can setup it or export historic data by the PC
Configuration through USB cable, and upgrade firmware by USB port. The Cellular IoT Gateway also can be
configured some basically parameters by SMS Commands, please refer to SMS Command List.
Tips!
1) Please insert the SIM Card firstly, and install the GSM/3G/4G Antenna, please power on to check the LEDs status according to above
mentioned LED Definitions, keep switch on it during the programming.
2) The PC Configuration in the CD, please click it to run.Also can download from www.GPRS-M2M.com under S17X/S37X page directly.
Below is the steps to setup the parameters by PC Configuration, please follow it step by step.
6.1 Start to Configure
Step1: Install the Configuration software
The Configuration software in the CD or download from www.GPRS-M2M.com, then installs it on the
computer.
Step2: Connection
Please insert the SIM Card, and install the GSM/3G/4G Antenna.
Step3: Connect the Gateway to the PC by USB Cable. And connect the external DC Power to DC Power Ports,
Power on, and switch on the device, see below:
Step4: Install USB Driver
Install the USB Driver to the computer from the CD firstly. When successful, it can be found out at the device
manager of the XP or Windows 7 or Win8/Win10, please see the below photo. Also, the driver for different
OS can be downloaded from Silicon Laboratories, Inc. http://www.silabs.com , the model is CP210x.

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Step5: Run the Configuration software (Compatible with Windows XP/7/8/10)
Tips: In some computer, it required download net framework 4.0 while installation, then please click “Yes” to go to
Microsoft website to download this service pack.
Please click S17X/S37X configuration software to run it. Enter the password, default is 1234. Then you can
enter the configuration page as below:
Notice:
If display the below windows, then means the RTU connect to the PC failure. The reasons are below:
1) USB Driver installation failure;
2) USB Cable connection is disconnected;
3) The Upgrade Firmware Switch at Load side, not at Work side.
4) Power Switch switched off or DC Power Connection is disconnected.
Step6: Choose the correct "COM port" in device manager above, enter the password(default is
1234),click the "OK" to connect and start to program
Details please check the picture as below:

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Tips: If not connect successfully, will not enter into next step. Pls check if USB connect well, or COM port and
password correct or not.
6.2 Setting Self-checking
Phenomenon
Possible Reason
Can't enter software
1. USB Driver installation failure;
2. COM Port not correct or USB driver installation failure;
After switching panel on,
only Power light on, panel
can't work
1. The Upgrade Firmware Switch at Load side, not at Work side.
Solution: Switch the power switch to OFF---->Upgrade switch to Work side---->
Power switch to ON;
2. SD card fall out from the slot. Solution: Shake panel to listen if there is voice
or not;
3. In upgrade mode, use upgrade tool erased the firmware.
Can't enter into working
mode
1. The Upgrade Firmware Switch at Load side, not at Work side.
Solution: Switch the power switch to OFF---->Upgrade switch to Work side---->
Power switch to ON;
Can't find COM Port
1. Have not installed driver;
2. PC system problem cause driver installation failure, can't support Apple OS
system.
3.Check USB line, and try other common driver software such as "Drive TheLife".
In working mode, the
device not response the
Modbus command
Have not set the device ID. Solution: In setting mode, set device ID---->Switch
the device to Run mode.
After switching panel on,
not running according to
parameter setting
After parameter setting, forget to click "Save" button in the menu.
Solution: Back to Set mode---->Click "Save" Button after setting one page in the
menu.
Terms usually used by Cellular IoT Gateway
Cellular IoT RTU, Modbus RTU, Modbus Master, Modbus Slave, Modbus RTU Over TCP,
Modbus TCP, Arm, Disarm...

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6.3 Configuration software interface and running
Load Profile: Click it to load additional Profile to the PC Configurator;
Export Profile: Click it to save the present configuration parameters as a profile for next RTU configuration or
backup the parameter settings.
Tips: The Load Profile and Export Profile is very useful while you need to program bulks of RTU with similar parameters. After
programmed the first unit then you can export profile to save it, for the second RTU then you can load profile directly to save
you time.
Default: Click it to recovery the parameters to factory defaults.
Notice:
1. After setting or revising parameter, need to click the "Save" button of this page for saving parameters in device
2. Before export profile, need to read Slaves configuration details first, to avoid Slaves information
missing.
3.Easy way to revise parameter: Open parameter setting page---->Click "Read" button to get device current value
---->Revise and click "Save" button in the menu.
4. Reboot the device, switch the Power Switch to OFF, then switch it to ON, the device will enter into normal
running mode after that.
Basic Settings
Reminder: Please click the "Read" for previous parameter before starting to set.

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Modify Password: This is for modifying the RTU’s Password, default is 1234.
Synchronous machine time: This is to setup the RTU’s time for daily report or other timers. After click
Write the RTU Time, the RTU will be synchronous the same time as the PC. If connect to King Pigeon Cloud
Server, no need this step.
Device ID: Non-necessary. This is mainly for monitoring center to identify the RTU;
If communicate via Modbus protocol, device ID only can be 1~247.
Device Description: This is the description of the RTU, e.g.: installation address,
usage instructions and so on.
Add Timestamp to alarm SMS: Tick it stands for while alarm occurrence, the Alarm SMS
will include the RTU’S current time information at the SMS Content.
Arm automatically when power on: Tick it stands for once the RTU powered up, the RTU
will enter into Arm Mode automatically.
Auto Arm after disarmed: Fill the timeout to enter into Armed Mode automatically after
disarmed operation. This is useful for security protection applications.
Tips:
Arm: Under this mode, any alarm occurrence will send SMS and dial the authorized numbers immediately. And execute the
programmed I/O outputs.
Disarmed: Under this mode, alarm occurrence will not send SMS & dial the authorized numbers.
Timer Reporting SMS Content Settings: Tick the related items to add its value/status to the
Timer report SMS contents.
Alarm SMS Content Settings: Ticks the related items to add its value/status to the Alarm
SMS Contents.
Number Settings
This is to setup the Authorized User Telephone Numbers to receive the Alarm SMS or dial. Tick it stands for
while the related event alarm occurrence will send SMS to this number.
Reminder:
Please remember that click "Save" button to save it after parameter be written, below pages are the same.

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Power On: Tick it stands for while the RTU powered up, will automatically send SMS to this number,
include device model, version, description, IMEI, status, signal value etc....
Timer Report: Tick it stands for Timer report SMS will send to this number.
Arm/Disarm SMS: Tick it stands for Arm or Disarm the RTU, will send SMS to this number.
Low Signal: Tick it stands for while GSM/3G/4G Network signal strength lower than 14 will send SMS
to this number.
Power Lost: Tick it stands for while external DC Power loss will send SMS to this number.
Power Recovery: Tick it stands for while external DC Power recovery, will send SMS to this number.
Cellular network Failure: Tick it stands for while GPRS connection re-try 3 times and still failure will send
SMS to this number.
Relay Switch:Tick it stands for while relay is activated,will send SMS to this number.
Slave Alarm: Tick it stands for the salve tag triggered will send SMS to this number.
Slave Failure: Tick it stands for when slave communication failure alarm verify time arrive,
will send SMS to this number.
T&H Trigger Settings
This page is to setup the temperature/humidity input alarm conditions parameter. It can be used for
monitoring temperature and humidity, can be connected as below:

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Reminder:
T&H input default Disable.
Input Type: The user can choose the input type for related channel. Includes: Enable and Disabled.
1) Disabled: Not use this channel.
2) Enable: Use this channel.
High Alarm SMS: Under Arm or 24h status, once current value higher than threshold high value will
send this SMS content to authorized numbers.
Low Alarm SMS: Under Arm or 24h status, once current value lower than threshold low value will
send this SMS content to authorized numbers.
Recovery SMS: Under Arm or 24h status, if tick the "Recovery Alarm", when current value recovery
normal will send this SMS content to authorize number.
Maximum: The transducer’s maximum measure range. E.g.:100 Celsius degree. Usually it can
be found out at the transducer’s specification.
Minimum: The transducer’s minimum measure range. E.g : -50 Celsius degree. Usually it can
be found out at the transducer’s specification.
Current Value: Stands for input’s current value of the transducers.
Threshold High: The high value(reached) need to alarm; Example: set 50Celsius degree to alert.
Threshold Low: The low value(reached) need to alarm; Example: set -30Celsius degree to alert.
Recovery Alarm: Tick it stands for when the T&H input recovery, will send SMS to the authorized numbers.
Alarm ACK Time: Stands for when the temperature/humidity value high or low lasted time more than this
value, will be treated as a true alarm, if less than this value, then will not alarm.
24Hr: Tick it stands for no matter the RTU is in Arm or Disarmed mode, this input triggered
will alarm.
T&H Alarm Settings
This page is for setup while temperature/humidity alarm, send SMS & Dial to which authorized numbers.
Tick it stands for enable to send SMS or dial the related authorized number.

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Timer Settings
This page is for setup hour timer and periodically timer, it is useful for scheduling when to execute what
action automatically or it with repeat this action according to the interval time. Tick it stands for enable this
timer event:
Reminder:
When GPRS/3G/4G data transmission protocol is King Pigeon IoT RTU Protocol, the periodically auto upload
default enable and upload every 5 minutes.
Tick stands for enable this timer function, otherwise is disable.
Weekly+Hour+Minute: Stands for what day and at what time does the RTU should start to

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execute the action and interval how many seconds then repeat to execute the action.
Interval: Stands for interval how many seconds does the RTU should repeat to execute the action.
If setup it as 0, then this event will not be repeated.
Action: Stands for what action does the RTU should to execute at the specified time.
Question: Have set the timer SMS report, but finally not get the SMS.
Solution: Have no ticked the "Timer Reporting SMS Content" in first Basic Parameter Settings page.
Interlock Settings
This page is for setup if what happen, then what action does the RTU should execute, it is a programmable
logic events. Total can program up to 40 logic events for automatically control purposes.
Event: Stands for if this occurrence.
Action: Stands for then what action does the RTU should execute.
RS485 Serial Port Settings
This page is for setup the serial port parameters. Over the RS485, the S275 RTU can be used as Modbus RTU
Slave, Modbus RTU Master and transparent transmission.

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Modbus RTU Master: Stands for the RS485 used for Modbus RTU Master.
Modbus RTU Slave: Stands for the RS485 used for Modbus RTU Slave, and the "Scan rate", "Time
out" and "Slave failure verify time " of Master function will be disable.
Baud Rate: 1200/2400/4800/9600/19200/38400/57600/115200 optional.
Data Bit: 8 bit.
Parity Bit: None, Even and Odd optional.
Stop Bit: 1 or 2 stop bit optional.
Scan rate: When RS485 used as Master, the interval time between two polling command.
Time out: When RS485 used as Master, after sending command to slave, the longest time waiting for
slave data back. If longer than this setting value, will ensure slave no response.
Slave Error ACK time: When RS485 used as Master, if no response time between Master and Slave
longer than this value, will send SMS to authorize number.
Slave Settings
This page is for adding, revising and deleting the slaves. When used as Modbus RTU master, slave
data mapping can be added to local register. When editing a slave, just select a row and right click
to complete the delete, add, modify parameters, etc.
Note:When adding a slave, first read the list of slaves that have been mapped to prevent the new
slave covering the added slave device.