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3 communication using the hart® protocol, Communication using the hart® protocol, 3 communication using the hart – Pyromation Series 642 User Manual

Page 15: Protocol, 1 hart, Communicator dxr375

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Series 642

Operation

Pyromation, Inc.

15

Hardware setting with jumper J3 (only for devices without a display)

If jumper J3 is set, the minimum operating voltage can be reduced from 11 V to 8 V.

5.3

Communication using the HART

®

protocol

The set-up and measured value read out of the measuring device is done using the HART

®

protocol.

The digital communication is done using the 4 to 20 mA current output HART

®

(see Figs. 4 and 5).

There are a number of possible set-up methods available to the user:
• Operation using the universal handheld module "HART

®

Communicator DXR375".

• Operation using a PC combined with an operating software, e.g. 'TransComm Light' as well as a

HART

®

modem.

• Operating programs of other manufacturers ('AMS', Fisher Rosemount; 'SIMATIC PDM',

Siemens).

In order to do this follow these steps.

1.

On Windows NT

®

Version 4.0:

Select the menu point "COM-Port" using the menu "START" ➠ "SETTINGS" ➠ "CONTROL
PANEL" ➠ "PORTS". Using the menu string "SETTINGS" ➠ "ADVANCED" switch the
command "FIFO active" off. Now restart the PC.

2.

For Windows

®

2000 and Windows

®

XP (classic category view):

Select "Advanced settings for COM1" using the menu "START" ➠ "SETTINGS" ➠ "CONTROL
PANEL" ➠ "SYSTEM" ➠ "HARDWARE" ➠ "DEVICE MANAGER" ➠ "PORTS (COM and
LPT)" ➠ "COMMUNICATIONS PORT (COM1)" ➠ "CONNECTION SETTINGS" ➠
"ADVANCED". Deactivate the "Use FIFO buffer". Now restart the PC.

5.3.1

HART

®

Communicator DXR375

Procedure:

1.

Switch on the handheld module:
– Measuring device not yet connected. The HART

®

main menu appears. This menu level

appears for every HART

®

programming, i.e. irrespective of the measuring device type.

Information on off-line configuration can be found in the Operating Instructions of the
“Communicator DXR375” handheld module.

– Measuring device is already connected. The 1st menu level of the device function matrix

appears directly (see Fig. 9). All the functions accessible under HART

®

are systematically

arranged in this matrix.

2.

Select the function group (e.g. Sensor ) and then the desired function, e.g. “Sensor type”.

3.

Enter type or change the setting. Then confirm with the function key F4 “Enter”.

4.

“SEND” appears via the function key “F2”. Pressing the F2 key transfers all the values entered
with the handheld module to the device measuring system.

Please check that the hardware and software setting for the failsafe mode match.

If communication errors occur in the Microsoft

®

Windows NT

®

Version 4.0 and

Windows

®

2000 operating systems the following measure is to be taken:

Switch off setting "FIFO active".

With the HART

®

handheld module, all device functions are selected by means of various

menu levels with the aid of the function matrix (

→ ä 16). All the device functions are

explained in chapter 6.4.1 "Description of Device Functions".