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4.3 General information
4.3.1 Introduction
4.3.2 Brief description of
FTP communication
4.3.3 Monitoring
networks
First connection – FTP communication
AMS-8061 area monitor can be set to operate using two different remote
communication modes, both using one of the internal modem network:
Point-to-point and FTP (File Transfer Protocol).
The user should decide in advance the communication mode for each
station as Point-to-point communication mode is not allowed while a
station is set for FTP and viceversa.
This section provides operating instructions and suggestions to correctly
use AMS-8061 area monitors set for FTP communication mode.
For FTP communication mode, first connection must be done via
RS232 or USB cable to allow proper setting of FTP and modem
parameters.
When a GSM modem switches on it links up with the proper network.
Assuming that parameters such as Access Point Name, User Name and
Password are correctly set by the user, the modem accesses the Internet to
establish packet data communication towards other devices identified by
their IP address.
Unlike the Point-to-point data communication, there is no need to establish
a direct connection between two devices by means of a call to a telephone
number. Each data packet put in the network includes the receiver IP
address so that any packet can be delivered efficiently.
In GSM/GPRS mode the telephone channel is not engaged continuously
but only when some data have to be transmitted. In this way a single
telephone channel can be shared between users or more channels can be
used at the same time to improve the communication speed.
Usually there is no need to ask the provider for specific data service as SIM
cards are often already enabled for 4G GPRS.
An evident advantage using internet for data exchange is that it allows
accessing data from anywhere, at low cost, regardless the distance.
The monitoring network is a system composed by one to several AMS-
8061 remote stations and a controller PC running the 8061SW-02 control
software.
Remote stations continuously perform field measurements and store
results in their internal memory.
At programmed time, each station downloads the stored results to the
controller PC in a different way depending on the communication method
that have been decided in advance.
Point to Point and FTP Communication
4-19
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