Emerson 3081FG Hart Communicator PC, OFF-LINE and ON-LINE Operations, Applications

Model 3081FG

Instruction Manual

IB-106-3081 Rev. 1.5 September 2002

6	7	8	9	10	11
5						12
4						13
3						14
2			4-20 mA			15
1						16
					+

MODEL 3081 TRANSMITTER

TERMINAL BLOCK

LOOP CONNECTORS

SERIAL PORT & BATTERY	LOOP CONNECTORS	USE INTERFACE
		00275 0013 ONLY
CHARGER MUST		SERIAL PORT
NOT BE USED IN
HAZARDOUS AREAS

HART COMMUNICATOR

REAR PANEL

RL < 250Ω

4-20 mA SIGNAL LINE

ANALOG OUTPUT DEVICE

4

250OHM

LOAD

RESISTOR (SEE NOTE)

HART COMMUNICATOR

NOTE: THE SIGNAL LOOP MUST BE BROKEN TO INSERT THE OPTIONAL 250 OHM

LOAD RESISTOR. 26020041

	Figure 4-2. Signal Line Connections, < 250 Ohms Lead Resistance
4-3	HART COMMUNICATOR PC	b. In the on-line mode, the communicator is
	CONNECTIONS	connected to the 4-20 mA analog output
		signal line. The communicator is connected
	There is an option to interface the HART Com-	in parallel to the Two-Wire In Situ Oxygen
	municator with a personal computer. Load the	Analyzer or in parallel to the 250 ohm load
	designated AMS software into the PC. Link the	resistor.
	HART Communicator to the PC using the inter-	c. The opening menu displayed on the HART
	face PC adapter that connects to the serial port
	(on the communicator rear panel).	LCD is different for on-line and off-line op-
		erations. When powering up a disconnected
	Refer to the proper HART Communicator docu-	(off-line) communicator, the HART LCD will
	mentation in regard to the PC interface option.	display the Main Menu. When powering up
		a connected (on-line) communicator, the
4-4	OFF-LINE AND ON-LINE OPERATIONS	HART LCD will display the On-line Menu.
		Refer to the HART Communicator manual
	The HART Communicator can be operated both	for detailed menu information.
	off-line and on-line.	4-5 MENU TREE FOR HART COMMUNICATOR/
	a. Off-line operations are those in which the	TWO-WIRE IN SITU OXYGEN ANALYZER
	communicator is not connected to the Two-	APPLICATIONS
	Wire In Situ Oxygen Analyzer. Off-line op-	This section consists of a menu tree for the
	erations can include interfacing the HART
	Communicator with a PC. (Refer to applica-	HART Communicator (Figure 4-3). This menu is
	ble HART documentation regarding	specific to Two-Wire In Situ Oxygen Analyzer
	HART/PC applications.)	applications.

Rosemount Analytical Inc. A Division of Emerson Process Management HART/AMS 4-3