RS232 to GSM Modbus Modem RTU (S4321) with GPRS GSM Cellular for Scada PLC

GSM RTU Industrial Design GSM GPRS Cellular Module
1. Industrial high-powered embedded 32 bits CPU
2. Industrial high-powered cellular module
3. Real time OS with completely full TCP/IP protocol
4. Strengthened PCB which follows the principle of 20H and 3W, and adopts health benefits material to ensure the product stability
5. Industrial grade rigorous screened components
6. Industrial power adapter, wide voltage power supply design, power range DC7-32 V, reverse-voltage
And overvoltage protection

Digital Analog GPRS RTU Stability and Reliability
1. Three-tier system protection, based on the system protection of software protection and WDT, It
2. Supports VMW (Virtual Man Watch)function
3. SIM/UIM port: 15KV ESD protection
7. All modules are certified by CGD/CE/FCC certificate
8. Support dynamic domain name(DDNS) and IP access to data center
9. Design with standard TCP/IP protocol stack
10. EMC&EMI outstanding performance, passed 3000V electrical shock test&EMC test
High Performance
1. TCP/UDP transparent data transfer, supports several work mode
2. Support APN and VPDN
3. Support DDNS and IP access to data center
4. Support double data centers for backup
5. Support several data centers
6. Support auto recovery mechanism, including online detect, auto Re-dial when offline to make it always online
Support dual data centers, one main and another as backup
Support multiple data centers, it can support maximum 5 data centers
Support multi-center multi-function(for example: One data center is MODBUS RTU protocol function, another data center is RTU extended protocol function)

Support multiple online trigger ways, including SMS, ring and data. Support link disconnection when timeout
Support dynamic domain name(DDNS) and IP access to the data center
Support RS232/RS485 MODBUS RTU protocol.
Support TCP MODBUS RTU protocol using TCP2COM software that converts TCP to virtual serial port.
Support 8 digital inputs and 8 analog input manual query and automatic report.
Support 4 optocoupler isolated output ports and 4 relay outputs controlled via MODBUS RTU protocol.
Support pulse counter initiate value configurable, Its realtime value can be queried via MODBUS RTU protocol
Support RTU extended protocol.

Acquisition data(8 analog inputs and 8 digital inputs) is reported periodically via RTU extended RTU protocal.
Support RTU extended protocol. Reporting mode can be selected. There are three reporting mode, including Network only, SMS only and Main network SMS backup(it uses SMS. When network connect fail)
Support RTU extended protocol. When reporting acquisition data failure, acquisition data are saved to 2M byte SPI FLASH.

Support RTU extended protocol. The data center can query acquisition data actively
Support RTU extended protocol. It has counter function that the initial value of the timer is set and the value of the timer is queried
Support RTU extended protocol. It has the data center and RS232/RS485 transparent transmission function.
Support RTU extended protocol. It has alarm function, alarm information is reported automatically(alarm trigger conditions can be configured independently).
Support RTU extended protocol. Can remotely reboot RTU
Support RTU extended protocol. Can remotely configure the parameters
Support RTU extended protocol. The remote upgrading parameters can be configured, RTU support remote upgrade firmware.
Alarm function: Alarm information are reported through RTU extended protocol, SMS, or both SMS and RTU extended protocol.

Easy to Use
1. Graphical configuration tool which provides fast configuration and bulk configuration
2. Center software based on C, VC, VB, DEPHI language
3. Compatible with third party software
6. Various of DLL based on C, VC, VB, DEPHI language, provide user guide
Checkout software, Serial debugging software, network speed detection software, provide a different level of debugging output