EGW1-IA3-MB-DF1 – Modbus TCP a DF1 User’s Manual
Exemys
www.exemys.com
Rev. 1
27
D. Ping-based method for IP configuration
When the device receives an ICMP request (usually known as a
ping
command) within the first 7 seconds
after it is powered on, it configures its IP address based on the destination IP address of that packet.
Before sending the ping, a static entry must be added to the ARP table of the computer used to send the
command. This entry will insert a mapping between a target IP address an its corresponding MAC
(physical) address. The MAC address is printed on the case.
Assume the following scenario:
Desired IP address
192.168.0.53
MAC address
00-0b-fa-30-03-7b
The command ARP depends slightly on the Operating Systems, as shown in Table 7:
Table 2 - ARP entries for typical Operating Systems
If you are running this OS
Insert an ARP entry by typing…
Windows (all)
arp –s 192.168.0.53 00-0b-fa-30-03-7b
Unix (all)
arp –s 192.168.0.53 00:0b:fa:30:03:7b
(You may check if the entry was inserted by executing
arp –a
)
Then type
ping 192.168.0.53 –t
within the first 7 seconds. The
–t
option causes the ping to be sent
continuously. Power off and on the device. Once the device starts to reply to the ping command, it will be
ready to be operated over the network.
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