Novus AirGate-GPRS User manual

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AirGate-GPRS
INSTRUCTION MANUAL
V1.0x
INTRODUCTION.................................................................................................................................................................3
TYPICAL APPLICATIONS..................................................................................................................................................4
SPECIFICATIONS ..............................................................................................................................................................7
CONNECTIONS AND INSTALLATION...............................................................................................................................8
MECHANICAL INSTALLATION..................................................................................................................................... 8
DIMENSIONS..........................................................................................................................................................8
OPENING THE AIRGATE-GPRS ............................................................................................................................ 8
ELECTRICAL INSTALLATIONS....................................................................................................................................9
INSTALLATION RECOMMENDATIONS .................................................................................................................9
POWER SOURCE...................................................................................................................................................9
RS485...................................................................................................................................................................... 9
INPUTS.................................................................................................................................................................. 11
USB INTERFACE .................................................................................................................................................. 12
GPRS INTERFACE ............................................................................................................................................... 12
SIGNAL LIGHT (LED)....................................................................................................................................................... 13
USB DRIVER INSTALLATION.......................................................................................................................................... 14
WINDOWS 8 ............................................................................................................................................................... 14
DEFINITION AND SELECTION OF SERIAL PORT (COM) - WINDOWS......................................................................... 19
CONFIGURATION SOFTWARE....................................................................................................................................... 20
EQUIPMENT SOFTWARE (FIRMWARE) UPDATE.................................................................................................... 20
AIRGATE-GPRS OPERATION......................................................................................................................................... 21
GPRS INTERFACE..................................................................................................................................................... 21
AUTHENTICATION AND OTHER DETAILS.......................................................................................................... 21
WITHOUT AUTHENTICATION........................................................................................................................21
OPEN AUTHENTICATION...............................................................................................................................21
NAP..................................................................................................................................................................21
ANALOG OR DIGITAL INPUT..................................................................................................................................... 21
RS485 INTERFACES.................................................................................................................................................. 22
RS485 - 1............................................................................................................................................................... 23
RS485 - 2............................................................................................................................................................... 23
REMOTE CHANNELS................................................................................................................................................. 23
USB INTERFACE........................................................................................................................................................ 24
SENDING SMS – ALARMS AND STATUS................................................................................................................. 24
ALARMS................................................................................................................................................................ 24
SMS EXAMPLES................................................................................................................................................... 25
DATA COMMUNICATION AND ROUTING................................................................................................................. 25
ROUTING .............................................................................................................................................................. 26
ONE RS485 MASTER INTERFACE ................................................................................................................26
TWO RS485 MASTER INTERFACES .............................................................................................................26
MODBUS COMMANDS AND REGISTERS TABLE.......................................................................................................... 27
SUPPORTED MODBUS COMMANDS ....................................................................................................................... 27
READ HOLDING REGISTERS – 03H ................................................................................................................... 27
WRITE SINGLE REGISTER – 06H ....................................................................................................................... 27
WRITE MULTIPLE REGISTERS – 16H................................................................................................................. 27
TABLE OF HOLDING REGISTERS ............................................................................................................................ 27
DETAILS ABOUT SOME REGISTERS....................................................................................................................... 28
REGISTERS 0 AND 1 - SERIAL NUMBER ........................................................................................................... 28
REGISTER 2 – FIRMWARE VERSION................................................................................................................. 28
REGISTERS 3 AND 4 – VALUE OF THE ANALOG/DIGITAL CHANNEL............................................................. 28
REGISTERS 5 TO 14 – VALUE OF REMOTE CHANNEL .................................................................................... 28

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REGISTERS 31 TO 45 – SIM CARD IDENTIFICATION ....................................................................................... 28
REGISTER 46 – GSM SIGNAL LEVEL................................................................................................................. 28
REGISTER 51 – STATUS 1................................................................................................................................... 28
REGISTER 52 – STATUS 2................................................................................................................................... 28
WARRANTY...................................................................................................................................................................... 29

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INTRODUCTION
Ideal for machine to machine (M2M) telemetric applications, the AirGate-GPRS allows for the supervision of a network
with Modbus serial communication for more than one master. One of the masters can be remote, communicating using a
TCP/IP connection on GPRS using the cloud. Another master can be locally connected supervisory software. The
second RS485 interface can be configured as a Modbus slave, allowing a third master, such as a local IHM, to access
the slaves, or as a Modbus master, allowing a new branch of the network with more slaves communicating. The routing
of Modbus packets between the interfaces ensures the original performance of the network, even with other
functionalities turned on. Besides the gateway functionality, the AirGate-GPRS signals monitored alarms of Modbus
registers of the slaves connected to one of the interfaces.
Internet or cell phone based services, like data communication and text messages, are
subject to failures, delays and interruptions and do not offer any guarantees of success for
these services. Alway
s consider the failure possibility when specifying, designing or
building a monitoring, alarm or control system based on these services. NOVUS will not be
responsible for third-
party services that may be ceased or interrupted at any time, and it
cannot gua
rantee their integrity or availability for any period of time. The usage of such
services can generate exceeding costs, according to the one hired with the service
provider. NOVUS will not be responsible for any fixed or additional costs referring to any
service usage.
Avoid using prepaid and pay-per-use plans, either for data or text-messaging, since these
plans can bring severe performance limitations that are not easily predicted.

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TYPICAL APPLICATIONS
Below are examples of some AirGate-GPRS applications:
1. Remote monitoring without local monitoring
With this application, the AirGate-GPRS allows remote access to the data of the Modbus RTU network using the cellular
network (GSM/GPRS) and the sending of alarm and status messages (SMS).

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2. Remote monitoring with local monitoring
In this application, AirGate-GPRS is inserted in a Modbus network that needs local supervision (often it is an existing
Modbus network). Besides performing the role of a USB-RS485 converter, it allows remote access to data from the
Modbus RTU network using the cellular network (GSM/GPRS) and the sending of alarm and status messages (SMS).

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3. Remote monitoring with double local monitoring
In this application, the AirGate-GPRS is inserted into a Modbus network that needs local supervision of two Modbus
masters: normally a Supervisory software (SCADA) and an IHM or local CLP. Not only does it allow for the use of two
masters in the same network due to the capacity for routing the packets, it allows for remote access to data of the
Modbus RTU network using a cellular network (GSM/GPRS) and the sending of alarm and status messages (SMS).
4. Remote monitoring using only SMS
In this application, the AirGate-GPRS can either be or not be inserted in a Modbus network. The monitoring of the
desired variables is made only by text messages that state the periodic status of a few variables and alarm type
conditions.

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SPECIFICATIONS
Power Supply: 10 to 35 Vcc. Maximum consumption: 150 mA @ 24 V.
Environmental Conditions: Operation Temperature: -10 to 50 °C. Relative Humidity: 80 % up to 30 °C. For
temperatures higher that 30 °C, lower 3 % per °C.
Internal use.
Installation category II.
Pollution level II.
Altitude < 2000 m.
Dimensions:114 x 99.5 x 17.5 mm
Weight:
•Without antenna: 114 g
•With antenna: 174 g
Enclosure: PA66, with metallic attachment for 35 mm DIN track.
Internal protection against polarity inversion of the power supply voltage.
Wire section used: AWG 28 a 12.
Recommended torque: 4 kgf·cm.
Analog Entries:
The types of entry signals accepted by AirGate-GPRS and their minimum measurement bands are selected in the
Configuration software and are listed in the following table.
TYPE OF INPUT MEASUREMENT RANGE EXACTNESS
Linear 4 to 20 mA Configurable ± 1.0 % (F.E.) *
Linear 0 to 10 V Configurable ± 1.0 % (F.E.) *
F.E. = Scale Background = Span
(*) Note: he background scale is in regards to the input of the sensor’s signal and not the configured recommended range.
Table 01 – List of signals accepted by AirGate-GPRS
Although the analog inputs can recommend a bit beyond the limits of the configured range, the specification is not
guaranteed outside the range.
Impedance of the analog channel input:
•mA: 150 Ω + 1.5 V
•V: 670 kΩ
Digital Entries:
•Logical level “0”: from 0 to 0.8 Vdc
•Logical level “1”: from 2 to 6 Vdc
GPRS Interface:
GSM/GPRS Technology, class 8 to 12 (GRRS device class B)
Quad Band GSM operation range (850 MHz, 900 MHz, 1800 MHz and 1900 MHz)
Output power:
•1 W (GSM 1800/1900)
•2 W (EGSM 850/900)
RF Tx Power: +30 dBm
RF Rx Sensibility: bether than -100 dBm
Output for antenna GSM: impendency 50 Ω, SMA plug
USB Interface:
Mini-B type USB connector. Compatible with USB 3.0, 2.0 and 1.1.
Isolation of 600 V between the USB interface and the rest of the circuit (power, RS485 and analog/digital inputs).
Certifications: ANATEL (1534-13-7089)

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CONNECTIONS AND INSTALLATION
MECHANICAL INSTALLATION
The AirGate-GPRS has its own cabinet to be installed on a 35 mm track.
For the installation on the track, the metallic hook should be placed on the base and pressed against the track.
DIMENSIONS
Fig. 01 – Dimensions of the AirGate-GPRS
OPENING THE AIRGATE-GPRS
In order to open the AirGate-GPRS, you must press the orange lockers located on both sides of the enclosure and pull
the frontal cover very carefully, just like shown in Fig. 02.
Fig. 02 – Opening the AirGate-GPRS

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ELECTRICAL INSTALLATIONS
The AirGate-GPRS has power source connectors for inputs and RS485 serial communication interfaces.
Be careful when connecting the power source wires to the AirGate-GPRS
. If the
positive conductor of the power source is turned on, even for an instant, to one of the
communication connection terminals, the AirGate-GPRS can be damaged.
Fig. 03 - Power source and communication connections of the AirGate-GPRS
Fig. 04shows the required electrical connections. Terminals 1, 2, and 3 belong to the first interface RS485/Modbus
(RS485-1), while terminals 4, 5, and 6 belong to the second interface RS485/Modbus (RS485-2). Terminals 7, 8, and 9
are for the inputs (analog or digital) of the equipment. Terminals 10, 11, and 12 are used to feed the AirGate-GPRS.
Fig. 04– Electrical connections of the AirGate-GPRS
INSTALLATION RECOMMENDATIONS
•Input conductors should travel the system plant separately from the output and supply conductors, in grounded
electrical ducts.
•The power source of the instruments should come from a network that is appropriate for the instrumentation.
•The use of RC FILTERS (47 Ωand 100 nF, in series) parallel to the contactor coils and solenoids that are near or
connected to the equipment is recommended.
•In control applications, it is essential to consider what can happen when any part of the system fails. The relays of
output RL1 and RL2, used as alarms, do not guarantee total protection.
•Section of used wires: minimum gauge of 0.14 mm².
POWER SOURCE
Terminals 11 and 10 must be connected to the AirGate-GPRS power supply. Power supply polarity should be noticed.
RS485
The RS485 interfaces of the AirGate-GPRS have terminals for communication with 3 wires, including the common. The
wiring to the Modbus networks will depend whether each interface is configured to operate as a master or slave.

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•Master
•Slave