Advantech SmartFlex SR304 User manual

Hardware Manual
Industrial Cellular Router
SmartFlex SR304
Advantech Czech s.r.o., Sokolska 71, 562 04 Usti nad Orlici, Czech Republic
Document No. MAN-0037-EN, revision from 19th December, 2023.

© 2023 Advantech Czech s.r.o. No part of this publication may be reproduced or transmitted in any form or by any means,
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Information in this manual is subject to change without notice, and it does not represent a commitment on the part of Advantech.
Advantech Czech s.r.o. shall not be liable for incidental or consequential damages resulting from the furnishing, performance,
or use of this manual.
All brand names used in this manual are the registered trademarks of their respective owners. The use of trademarks or other
designations in this publication is for reference purposes only and does not constitute an endorsement by the trademark holder.

Used symbols
Danger – Information regarding user safety or potential damage to the router.
Attention – Problems that can arise in specific situations.
Information – Useful tips or information of special interest.

Contents
1. Router Description 1
1.1 Usage of the Router ......................................... 2
2. Contents of Package 5
3. Router Design 6
3.1 Router versions ............................................ 6
3.2 Product Revisions .......................................... 8
3.3 Delivery identification ........................................ 9
3.4 Order codes .............................................. 10
3.5 Basic dimensions of the router box ................................. 12
3.6 Mounting Recommendations .................................... 12
3.7 Removal from the DIN rail ...................................... 13
3.8 Description of the rear panel ..................................... 14
3.9 Description of the front panel .................................... 14
3.9.1 Status indication ....................................... 15
3.9.2 Power connector PWR .................................... 16
3.9.3 Antenna connector ANT, DIV, GPS and WiFi ....................... 17
3.9.4 SIM card reader ....................................... 18
3.9.5 MicroSD card reader ..................................... 19
3.9.6 Ethernet Ports (ETH0 and ETH1) .............................. 20
3.9.7 Power over Ethernet (PoE) ................................. 21
3.9.8 USB Port ........................................... 23
3.9.9 I/O Port ............................................ 24
3.9.10 Reset ............................................. 26
3.10 Interfaces Description ........................................ 27
3.10.1 SWITCH Interface ...................................... 27
3.10.2 RS232-RS485/422 Interface ................................ 28
3.10.3 RS485/422-RS485/422 Interface .............................. 30
3.10.4 RS232-RS485-ETH Interface ................................ 32
4. First Use 35
4.1 Connecting the router before first use ............................... 35
4.2 Start .................................................. 36
4.3 Configuration ............................................. 36
4.3.1 Configuration by web browser ................................ 36
5. Technical Parameters 38
5.1 Basic parameters ........................................... 38
5.2 Standards and Regulations ..................................... 39
5.3 Type tests and environmental conditions .............................. 40
5.4 Technical parameters of Cellular Module .............................. 41
5.5 Parameters of GNSS ......................................... 42
5.6 Technical parameters of WiFi .................................... 42
5.7 Technical parameters of I/O port .................................. 43

5.8 Technical Parameters of Power over Ethernet (PoE) ....................... 43
5.9 Other Technical Parameters ..................................... 44
Appendix A: Troubleshooting 45
Appendix B: Customer Support 48
Appendix C: Regulatory & Safety Information 49
Appendix D: Related Documents 50

List of Figures
1 Access to the Internet from LAN .................................. 2
2 Backed up access to the Internet .................................. 3
3 Using VPN tunnel .......................................... 3
4 Serial Gateway ............................................ 4
5 Contents of package ......................................... 5
6 Basic version (plastic) ........................................ 6
7 Basic version with WiFi (plastic) ................................... 6
8 Basic version (metal) ......................................... 6
9 Basic version with WiFi (metal) ................................... 6
10 Version SWITCH (plastic) ...................................... 7
11 Version SWITCH and WiFi (plastic) ................................. 7
12 Version RS232-RS485 (plastic) ................................... 7
13 Ver. RS232-RS485 & WiFi (plastic) ................................. 7
14 Version RS232-RS485-ETH (plastic) ................................ 7
15 Version SWITCH (metal) ....................................... 7
16 Version SWITCH and WiFi (metal) ................................. 7
17 Version RS232-RS485 (metal) ................................... 7
18 Version RS232-RS485 & WiFi (metal) ............................... 7
19 Version RS232-RS485-ETH (metal) ................................ 7
20 RS232-RS485-ETH & WiFi (plastic) ................................ 8
21 RS232-RS485-ETH & WiFi (metal) ................................. 8
22 RS485-RS485 (metal) ........................................ 8
23 Label examples ............................................ 9
24 Basic dimensions of the router box ................................. 12
25 Default position of plastic and metal DIN rail clip ......................... 13
26 Removal from the DIN rail ...................................... 13
27 SmartFlex front panel ........................................ 14
28 Power connector ........................................... 16
29 Connection of power supply ..................................... 16
30 Connecting the antenna ....................................... 17
31 SIM cards ............................................... 18
32 MicroSD card ............................................. 19
33 Ethernet connector .......................................... 20
34 Connection of Ethernet cable .................................... 20
35 PoE PD usage ............................................ 21
36 PoE PSE usage ........................................... 22
37 USB connector ............................................ 23
38 I/O connector ............................................. 24
39 Binary connection .......................................... 25
40 Router reset .............................................. 26
41 Version with SWITCH board ..................................... 27
42 Version with RS232-RS485/422 interface ............................. 28
43 RS232 connector ........................................... 28
44 RS485/422 connector ........................................ 29
45 Version with RS485-RS485 interface ................................ 30
46 RS485/422 connector ........................................ 30
47 Version with RS232-RS485-ETH interface ............................. 32

48 Ethernet connector .......................................... 32
49 RS485 connector ........................................... 33
50 RS232 connector ........................................... 33
51 Router connection .......................................... 35
52 Entering the IP address of the router ................................ 36
53 Entering login information ...................................... 36
54 Router web interface ......................................... 37

List of Tables
1 Router versions ............................................ 6
2 HW Revisions History ........................................ 8
3 Delivery identification ........................................ 9
4 Order codes overview ........................................ 10
5 Power over Ethernet ......................................... 10
6 Type of router box .......................................... 11
7 Type of power supply ......................................... 11
8 Examples of order code ....................................... 11
9 Front panel description ........................................ 14
10 LED status indication ......................................... 15
11 Connection of power connector ................................... 16
12 Technical specifications of microSD card .............................. 19
13 Ethernet connector pinout ...................................... 20
14 Insulation strength of Ethernet ports ................................ 20
15 Connection of USB connector .................................... 23
16 Connection of I/O port ........................................ 24
17 Characteristics of inputs ....................................... 24
18 Description of router reset and restart ............................... 26
19 State indication of the SWITCH interface .............................. 27
20 SWITCH interface parameters .................................... 27
21 Connection of RS232 connector .................................. 28
22 Connection of RS485 connector .................................. 29
23 Connection of RS422 connector .................................. 29
24 Technical specification of RS232 and RS485 ........................... 29
25 Connection of RS485 connector .................................. 30
26 Connection of RS422 connector .................................. 31
27 Technical specification RS485 .................................... 31
28 Connections of the Ethernet Connector .............................. 32
29 Connections of Terminal Block Connector RS485 ......................... 33
30 Connections of Terminal Block Connector RS232 ......................... 33
31 State indication of the RS232-RS485-ETH interface ....................... 34
32 Technical specification of RS232, RS485 and Ethernet ...................... 34
33 Basic parameters ........................................... 38
34 Standards and Regulations ..................................... 39
35 Type tests and environmental conditions .............................. 40
36 Technical parameters of cellular module .............................. 41
37 Technical parameters of GNSS ................................... 42
38 Technical parameters of WiFi .................................... 42
39 Characteristics of inputs ....................................... 43
40 PoE PD: parameters for opposite PSE ............................... 43
41 PoE PSE parameters ........................................ 43
42 Other technical parameters ..................................... 44

1. Router Description
SmartFlex SR304 is an industrial cellular router intended for the market in Europe, Middle East and Africa
(EMEA) areas. This device may also be operated in south-eastern Asia. This router is an ideal device
for wireless communication in mobile networks that make use of LTE, HSPA+, UMTS, EDGE or GPRS
technology. Due to the high speed of data transfer up to 150 Mbps (download) and up to 50 Mbps (upload)
is this router an ideal solution for specialized M2M devices and IoT as well as for wireless connection of
traffic and security camera systems, individual computers, LAN networks, automatic teller machines (ATM)
and other self-service terminals.
The standard configuration includes two Ethernet 10/100 ports, one USB 2.0 Host port, two binary inputs
and one output (I/O connector). The device also has two readers for 3 V and 1.8 V SIM cards, which are
located on the rear panel of the router. The router also includes a microSD card port that supports up to
64 GB card storage (32 GB in the case of SDHC cards). The router can be equipped with a WiFi module,
but this must be part of the initial configuration – it cannot be assembled to the router at some point in the
future.
The router can be equipped with PoE PD (Power over Ethernet – Powered Device), which allows the
router to be powered via Ethernet. It can also be equipped with PoE PSE (Power over Ethernet – Power
Source Equipment), which lets the router to power other devices via Ethernet. The SmartFlex router can
also be configured with a wide variety of port options. These can be SWITCH – three switched Ethernet
ports; RS232-RS485/422 – combination of serial interfaces; RS232-RS485-ETH – combination of serial
interfaces and Ethernet port with higher insulation. The router can be provided in either a plastic or metal
casing, depending upon the customer’s requirements.
Configuration of the router may be done via a password-protected Web interface. Web interface provides
detailed statistics about the router’s activities, signal strength, detailed system log etc. The router supports
the creation of VPN tunnels using IPSec, OpenVPN and L2TP to ensure safe communication. DHCP, NAT,
NAT-T, DynDNS, NTP, VRRP, control by SMS, backup primary connection and many other functions are
supported.
The router provides diagnostic functions which include automatically monitoring the PPP connection, au-
tomatic restart in case of connection losses, and a hardware watchdog that monitors the router status. The
user may insert Linux scripts which are started on various actions. It is possible to create up to four differ-
ent configurations for the same router. These configurations can be switched whenever necessary via Web
interface, SMS or binary input status. The router can automatically upgrade its configuration and firmware
from your central server. This allows for mass reconfiguration of numerous routers at the same time.
The router also supports additional software like R-SeeNet for permanent traffic monitoring of routers.
SmartFlex SR304 Hardware Manual 1

1. Router Description 1.1 Usage of the Router
Examples of possible applications
• mobile office
• fleet management
• security system
• telematic
• telemetric
• remote monitoring
• vending and dispatcher machines
1.1 Usage of the Router
The router is primarily intended for these four basic situations:
I. Access to the Internet from LAN
Figure 1: Access to the Internet from LAN
SmartFlex SR304 Hardware Manual 2