Emerson Daniel 3814, Installation Manual

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Table 3-2: CPU Module labeling and LED functions
(continued)
CPU Module labeling and LED
functions Function Switch position indicator or
LED
PORT A • PORT A override - RS-232
serves as an override during
meter commissioning to
establish communications
and in the event the user
cannot communicate with
the meter due to an
inadvertent
communication
configuration change. The
override period is for two
minutes
• Supports:
— auto-detected ASCII
(Start bit 1, Data Bit 7,
Parity Odd/Even, Stop
Bit 1)
— RTU (Start Bit 1, Data Bit
8, Parity none, Stop Bit
1).
— Modbus protocols
• RS-232 Baud rate=19,200
• Modbus ID=32
Switch position
• ON - enables RS-232 PORT
A override
• OFF - (default setting)
disables RS-232 PORT A
MEAS System color indicates
metrology mode
• Acquisition mode
• Measurement mode
LED status
• Red flashing LED
• Solid red the Acquisition
Module not communicating
with the CPU Module
• Green flashing LED
PWR • 3.3V Power Indicator • Solid Green
LED 4 • Not used
LED 5 • Not used
RX • RX signal (Port A for RS485
or RS232 communication)
receiving data • Flashing green (when
receiving data)
TX • TX signal (Port A for RS485
or RS232 communication)
transmitting data • Flashing green (when
transmitting data)
LINK • ETH1Link user Ethernet
connection • Solid green
Installation manual Electrical Installation
3-9000-760 May 2019
Installation manual 55