Delta RMC101 - Manual (Page 305)

Ethernet 5.2
Communications 5-55
Care should be taken to use a high-quality switch that will support your temperature, noise,
vibration, and other environmental requirements. It is also important to use a switch rather than a
hub to avoid collisions, which reduce the determinism of the network. Both hubs and Category 3 or
5 (commonly called CAT3 or CAT5) cabling are readily available from network supply companies.
2. Select a network address and subnet mask.
By convention, the network address 192.168.0 is never sent over the Internet. Therefore, it is a
good choice for the network address of a stand-alone control network. Because this network
address is 24 bits long, our subnet mask will be 255.255.255.0. This leaves 254 local addresses
(remember that addresses 0 and 255 are reserved) for an IP address range of 192.168.0.1 to
192.168.0.254.
3. Assign local addresses for each device.
We now have a range of 254 IP addresses to assign. The only real requirement when assigning
these addresses is to ensure that you do not assign two devices the same IP address. Therefore, it
is imperative that you record your IP address assignments for use later when you need to add or
replace device. By convention, local address 1 (IP address 192.168.0.1 in our new network) is
used as the default gateway. We do not have a gateway/router at this time, but it is a good idea to
leave that address unassigned for now.
So, assign your first device (perhaps a PLC) 192.168.0.2, assign your second device (perhaps an
RMC) 192.168.0.3, etc.
4. Enter the network parameters into each device.
The method of assigning the network parameters varies for each type of device. Use the IP
address you have assigned, a subnet mask of 255.255.255.0, and leave the default gateway blank
for each device. See RMC Ethernet IP Address Setup for details on editing these parameters on
the RMC, and consult the manuals of the other devices on your network for details on setting up
their TCP/IP parameters.
5.2.4.3 RMC Ethernet Firmware Screen
The Firmware tab on the Ethernet Options dialog holds the following information:
• Communication Program Version
This field gives the version of the main Ethernet program currently running in the RMC Ethernet
module. This field will display "Debugger" if no firmware is currently loaded. To update your
firmware, see Downloading New Serial/Ethernet Firmware.
• Boot Version