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03/06 Process Instrument Explorer Configuration Software User Manual 17
3.1.8 Ethernet Q&A
Q: How can I find the address of my Honeywell instrument?
A: The Ethernet address information that has been set in the instrument can be retrieved
by using P.I.E. to upload a product configuration upload using IR communication. After
the upload you can view the Ethernet group and see the Ethernet information. An
alternate way is to use P.I.E. and initiate an online configuration through IR
communication. This function does an initial upload of the current configuration from the
instrument and displays the groups. The Ethernet information can be viewed from the
Ethernet group.
The above cannot be done through RS485 communication because when the Ethernet
board is plugged in, the RS485 option is not available.
The default Ethernet information for a UDC as shipped from the factory is IP 10.0.0.2,
Mask 255.255.255.0, Gateway 0.0.0.0.
Q: How do I know what IP Address to use?
A: The default IP address provided from the factory is 10.0.0.2 on the UDC. Since IP
addresses must be unique, you will need reset the IP address for multiple instruments or
if the instrument is going to be placed on a LAN. Multiple instruments on a local net
could be set at 10.0.0.2, 10.0.0.3, 10.0.0.4, etc. If you want to put the instrument on a
LAN, you need to obtain available IP addresses from your IT group.
Q: How do I know what Mask to use?
A: The mask on the UDC is normally set to 255.255.255.0 since the first (3) numbers in
the IP address are typically the same for instruments on the same subnet.
Q: How do I know what Gateway to use?
A: The gateway information is the IP address of the router which would route the TCP/IP
traffic to the appropriate destination IP address. Every network has a gateway routing
device that holds the routing table for that network which specifies how to route TCP/IP
packets between network devices.
In the P.I.E. and UDC case, if the PC on which the P.I.E. is running and UDC are
connected to a LAN, then the gateway should have the IP Address of the router that
manages the LAN subnetwork. In the case of the PC on which the P.I.E. is running being
connected directly to the UDC with a crossed Ethernet cable, then the gateway IP address
can be set to "0.0.0.0". The normal procedure is to copy the first three bytes of the IP
address from the PC and set the last byte to 1. For example, if the IP address of the PC is
set to 10.2.3.4 then set the gateway IP address to be 10.2.3.1.
Q: How do I know what SMTP address to use?
A: The SMTP address is used for outgoing emails. This address is specific to your LAN
configuration and can be obtained from your IT group.
Q: Why can’t I communicate with my controller after I changed the controller’s IP
address?
A: The arp table in your desktop PC needs to be reset by typing “arp-d” in the DOS
command window. Also, changes to Ethernet parameters may take up to 60 seconds to
take effect.