NOVUS AirGate-GPRS - Manual (Page 3)

AirGate-GPRS
NOVUS AUTOMATION 3/29
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. Always 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 guarantee 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.