9
9
established/CSD call was not answered, you would receive SMS indicating the errors and the
concerned parameters.
Once configured, connect (physically) WirelessCom to the serial port of your remote
device/machine and you would be able to access your device remotely through GPRS/CSD.
Additionally, if you want to change the configuration parameters of WirelessCom you can do it
remotely using GPRS/CSD/SMS.
The next section would explain 2 scenarios 1) Typical wired connection which is being
used by most of the users. 2) A solution which would turn your wired connection into a wireless
solution so that you would have remote access, control and monitoring of your device/machine
through GPRS/CSD.
6.1 Wired Solution
A typical wired setup includes a device/machine with a RS232 port connected to the
serial port of the PC using a normal RS232 cable, refer fig 6.1. The user then launches some proprietary
software which came with the device/machine (or it can be a terminal software) and connects the
software to the same serial port to which device/machine is connected, refer fig 6.1 (b). Thus a
connection between device/machine and the software has been established. Now the user can
configure, operate, collect data, program the device/machine and perform such various operations. In
short the user is in total control of the device/machine.
PC/Server
RS232 cable
(Physical connection)
Hardware serial
port of PC
Proprietary software
running on PC
RS232 cable
(Physical connection)
6.1 (a)
6.1 (b)
Figure 6.1: Typical wired setup
