Section 3: Electrical installation

Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual

May 2012

3-9000-771 Rev A

 

 

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 3818 LNG Liquid Ultrasonic Flow Meter, the DHCP option must be turned off if used on a LAN/WAN.

RESTRICT ETHERNET AND SERIAL CONNECTIVITY USAGE

Failure to restrict Ethernet and communication access to the Daniel 3818 LNG Liquid 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 3818 LNG Liquid Ultrasonic Flow Meter is appropriately controlled and any necessary security precautions, such as, establishing a firewall, setting password permissions and/or implementing security levels.

Use ethernet cable (Daniel P/N 3-3400-079) to connect the PC to the meter.

Table 3-3 Ethernet cable to PC communication

Ethernet communication

Wire color

CPU

 

 

White w/Orange Stripe

TX+

 

 

Orange w/White Stripe

TX -

 

 

White w/Green Stripe

RX+

 

 

Green w/White Stripe

RX -

RX-

RX+

TX-

TX+

A DIN 41612 48-pin connector is the interface from the CPU Module to the Backplane Board (male end located on the back of the Backplane Board).

44

CPU Module labeling and LED indicators