Rockwell-automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) Uživatelský manuál stáhnout pdf (Strana 42)

Publication 1761-UM006E-EN-P - August 2005

4-2 ENI/ENIW Configuration (Nodes 241 to 254)

Make Configuration Settings

COM Port Settings

Use the Utility Settings tab to set the following:

• COM Port – The PC’s RS-232 port that the communications cable

is plugged into, or the COM port that the Com Port Redirector is

configured for.

• Baud Rate – Set the baud rate to match the baud rate configured

for the ENI/ENIW. If you’re not sure which baud rate the

ENI/ENIW is configured for, try the available baud rates listed in

Table 4.2, starting with 38,400 and then 19,200. These are the

most commonly used baud rates.

• Parameter Upload Behavior and Parameter Download

Behavior – This setting controls which parameters will be saved

or loaded when you use the Load From or Save To buttons.

• Configuration Security Mask – The Configuration Security Mask

can limit which computers are allowed to configure the ENI or

ENIW over Ethernet, based on their IP Address. A Configuration

Security Mask of 000.000.000.000 or 255.255.255.255 allows any

computer to configure the ENI or ENIW over Ethernet.

Otherwise, the Configuration Security Mask acts as a filter on a

source IP address such that any mask octet set to the value of

255 becomes ‘don’t care’. Octets in the source IP and all other

fields must match exactly.

The following examples illustrate how the Configuration

Security Mask behaves:

If a Configuration Security Mask is set to 192.168.15.255

and an IP address of 203.129.75.23

is received, the packet is rejected because 203.129.75 does not

equal 192.168.15. The fourth octet (23) is ‘don’t care’.

If an IP Address of 192.168.15.76

is received, the packet is processed because the upper three

octets match. The fourth octet is still ‘don’t care’.

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Rockwell-automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) Uživatelský manuál Strana 42