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52 CPU MODULE LABELING AND LED INDICATORS
Section 3: Electrical installation Daniel 3410 Series Ultrasonic Gas Flow Meter Installation Manual
June 2014 3-9000-759 Rev D
3.5.1 CPU Module labeling and LED indicators
The meter’s metrology mode and the status of the data transfer from the Acquisition Module to
the CPU Module are indicated via light-emitting diode (LED) status indicators. The WRITE PROT.
switch protects the meter’s configuration,
Figure 3-5 CPU Module labeling and LED indicators
A.
B.
C.
D.
E.
A. Acquisition/Measurement mode
B. Power
C. RX (RS-485/RS-232) - receiving data
D. LED 4 - not used
E. LED 5 - not used
F. TX (RS-485/RS-232) - transmitting data (RS-485 2-wire use TX+ and TX-)
F.
G.
G. Link (Eth1 Link) - user Ethernet connection