Hart Communicator Pc Connections; Off-Line And On-Line Operations; Figure 7-2. Signal Line Connections, < 250 Ohms Load Resistance - Emerson Rosemount Analytical Oxymitter 4000 Instruction Manual

Hazardous Area Oxymitter 4000
AC L1
AC N
+
-
+
4-20
-
TERMINAL BLOCK
LOOP CONNECTORS
SERIAL PORT & BATTERY
CHARGER MUST
NOT BE USED IN
HAZARDOUS AREAS
HART COMMUNICATOR
REAR PANEL
Figure 7-2. Signal Line Connections, < 250 Ohms Load Resistance
7-3 HART COMMUNICATOR PC
CONNECTIONS
There is an option to interface the HART Com-
municator with a personal computer. Load the
designated AMS software into the PC. Then link
the HART Communicator to the PC using the
interface PC adapter that connects to the serial
port (on the communicator rear panel).
Refer to the proper HART Communicator docu-
mentation in regard to the PC interface option.
7-4

OFF-LINE AND ON-LINE OPERATIONS

The HART Communicator can be operated both
off-line and on-line.
a. Off-line operations are those in which the
communicator is not connected to the Haz-
ardous Area Oxymitter 4000. Off-line op-
erations can include interfacing the HART
Communicator with a PC (refer to applica-
ble HART documentation regarding
HART/PC applications.
Rosemount Analytical Inc. A Division of Emerson Process Management
4-20 mA SIGNAL LINE
USE INTERFACE
LOOP CONNECTORS
00275 0013 ONLY
SERIAL PORT
HART
COMMUNICATOR
RL < 250Ω
ANALOG OUTPUT DEVICE
250 OHM
LOAD
RESISTOR
(NOTE)
NOTE: THE SIGNAL LOOP MUST BE BROKEN
TO INSERT THE OPTIONAL 250 OHM
LOAD RESISTOR.
b. In the on-line mode, the communicator is
connected to the 4-20 mA analog output
signal line. The communicator is connected
in parallel to the Hazardous Area Oxymitter
4000 or in parallel to the 250 ohm load
resistor.
NOTE
If the HART Communicator is turned
on while connected to the 4-20 mA
analog output signal line, an undefined
status indication appears while the
communicator warms up. Wait until
the warmup period ends to continue.
c. The opening menu displayed on the LCD is
different for on-line and off-line operations.
When powering up a disconnected (off-line)
communicator, the LCD will display the
Main Menu. When powering up a connected
(on-line) communicator, the LCD will display
the On-line Menu. Refer to the HART
Communicator manual for detailed menu
information.
Instruction Manual
IB-106-340C Rev. 4.1
July 2004
23230002
HART/AMS 7-3
7