CPU Module labeling and LED functions (continued)Table 3-2:
CPU Module la-
bel or LED Function Switch position indicator or LED
LED 5 • Indicates communication be-
tween CPU module and acquisi-
tion module
• Soid green
RX • RX signal (Port A for RS485 or
RS232 communication) receiving
data
• Flashing green (when receiving
data)
TX • TX signal (Port A for RS485; 2-wire
or 4-wire or RS232 communica-
tion) transmitting data
• Flashing green (when transmitting
data)
Link • ETH1Link user Ethernet connec-
tion
• Solid green, when link is establish-
ed.
Ethernet communications
The Ethernet port IP address, subnet mask, and gateway address are software-
configurable. In addition, a meter can be configured to act as a DHCP (Dynamic Host
Configuration Protocol) server to assign an IP address to a PC or laptop running Daniel
MeterLink. The DHCP server facility is not intended to act as a general purpose DHCP
server for a wider network. To this end, no user control is provided over the class or range
of IP addresses the unit provides. A standard twisted pair (Cat-5) cable should be used for
Ethernet wiring.
It is strongly recommended that the meter be configured using an independent (off-
network) single host. After configuration of the Daniel 3410 Series Gas Ultrasonic Flow
Meter, the DHCP option must be turned off if used on a LAN/WAN.
NOTICE
RESTRICTED ETHERNET AND SERIAL CONNECTIVITY USAGE
Failure to restrict Ethernet and communication access to the Daniel 3410 Series Gas Ultrasonic Flow
Meter can result in, among other things, unauthorized access, system corruption, and/or data loss.
User is responsible for ensuring that physical access and Ethernet or electronic access to the
Daniel 3410 Series Gas Ultrasonic Flow Meter is appropriately controlled and any necessary
security precautions are implemented; such as, establishing a firewall, setting password
permissions and/or implementing security levels.
Electrical installation
Installation manual 59
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