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9.1.2 Direct Connection
This section describes how to connect a PC directly to the instrument.
WIRING
Connection is made from the Ethernet connector at the rear of the Instrument to an Ethernet RJ45
connector, usually located at the rear of the PC. The cable can be either a 'cross-over' or 'straight
through' type.
Once wired correctly, and powered up, it is necessary to enter a suitable IP address and subnet mask into the
Comms configuration of the Driver Module. This information can be found as follows:
1.
At the PC, click 'Start'. 'All Programs', 'Accessories', 'Command Prompt'.
2.
When the Command Prompt box appears, type IPConfig and press <Enter>.
The response is a display, such as that shown below, giving the IP address and Subnet mask of the PC.
Choose an address in the range covered by these two values.
A subnet mask element of 255 means that the equivalent element of the IP address must be used
unchanged. A subnet mask element of 0 means that the equivalent element of the IP address may take
any value between 1 and 255 (0 is not allowed). In the example below, the range of IP addresses which
may be chosen for the Driver Module is 123.123.123.2 to 123.123.123.255. (123.123.123.0 is not allowed
and 123.123.123.1 is the same as the PC's address, and may therefore not be used.)
3.
In Network.Interface configuration (Section 6.2.1) enter the selected IP address and the subnet mask (as
it appears in the command prompt window) in the relevant parts of the menu.
4.
Check communications by 'pinging' as described in Section 9.1.1.
Once the link to the instrument has been verified, iTools can be started (or shut down and re-started), and the
Scan toolbar icon used, to 'find' the instrument. The scan can be stopped at any time by clicking on the Scan
icon a second time.
See Section 9.2 for more details of the scan procedure.
September 18
Figure 115 IP Config command
Subnet Masks and IP addresses.
Subnet Masks are most readily understood when looked at in binary format.
For example, a mask of 255.255.240.10 can be re-written as:
11111111.11111111.11110000.00001010. In such a case, IP addresses
11111111.11111111.1111xxxx.xxxx1x1x would be recognized (where x can be either a 0 or
Subnet mask
IP addresses
(Binary)
IP addresses
255
(decimal)
FEC920: USER GUIDE
255
240 to 255
A5E45696052A Rev-AA
10, 11, 14, 15,
26, 27, 30, 31,
42, 43, 46, 47 etc.
PC Ethernet
connector.
Page 187
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