Micro-Aide CWR-24E, Руководство пользователя

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37
M
icro
‑A
ide
4
C
hapter
4 – o
peration
i
ntroDUCtion
This chapter describes how to operate the VDL S7‑300 from a PC running a suitable communications
program. Local (i.e., on‑site) as well as remote methods of operating the Data Logger are described.
Before the logger can be operated it must be properly installed and set up. A PC must be online with the
logger. The use of the LCD panel and keypad are described in the next chapter.
M
ULti
‑U
Ser
o
peration
A unique feature of all MICRO‑AIDE Event Recorders and Data Loggers is their ability to handle simulta‑
neous operation from multiple users via the Terminal Port, Ethernet Port, modem, front panel keypad, or
in the case of the VDL, via the USB Device Port. This multi‑user capability eliminates the annoying practice
in some devices of one user effectively locking‑out a second or third user.
r
eMote
o
peration
The setup procedures and operational capabilities of the VDL can be exercised remotely via the
optional Ethernet Port or internal modem. The Ethernet Port is capable of supporting a Telnet connec‑
tion via TCP / IP. The modem will operate at speeds up to 33,600 Baud. It provides industry standard error
correction and data compression features. An Ethernet‑ or modem‑equipped PC running a communica‑
tions program (e.g., GEA or HyperTerminal) makes an ideal remote access system. Event Records and
other data from several remote Data Loggers can be easily gathered and saved as a file on a hard disk
or flash drive.
There are a few steps the remote user or host system must perform before remote access is possible.
Each of these steps is described in the sections that follow.
e
StabLiShing an
e
thernet
C
onneCtion
An Ethernet connection can only be established if the logger’s optional Ethernet Port is properly con ‑
figured. An IP Address and Port Number must be assigned. The procedure for doing so is described in
the section entitled “Network (N)” on page 31 . Perform the steps listed in the following to establish an
Ethernet connection. The procedure assumes that the user will access the logger via a LAN.
1. Assign an IP Address and Port Number to the logger’s Ethernet Port in accordance with the require ‑
ments of the LAN.
2. Connect the VDL to either a switch or hub device using a CAT‑5 cable.
3. Configure the communications application (e.g., HyperTerminal) to connect using TCP / IP (Winsock).
4. Within the communications application enter the logger’s IP Address and Port Number as the target
IP Address and associated Port Number. HyperTerminal refers to the target device as a host.
5. Click the appropriate icon that initiates the connection.
The procedure described previously is the same if the PC is connected directly to the logger. A successful
connection is indicated by a log‑on password request regardless of the interconnection method em‑
ployed.