Use Of The Hart ® Communications; General; Connection; Searchpoint Optima Plus User Interface - Honeywell Searchpoint Optima Plus Operating Instructions Manual

MAN0905_Issue 7_07/17
11. Use of the HART
Read this chapter if HART
Searchpoint Optima Plus.

11.1 General

The HART version of the Searchpoint Optima Plus can communicate using the HART
®
devices provide digital communications superimposed on the standard analogue output. Detailed
information about the HART
www.hartcomm.org.
HART is a master-slave protocol, i.e. the Searchpoint Optima Plus does not continually transmit data but
®
will respond on request.
Searchpoint Optima Plus has a HART
with the product, or available to download from Honeywell Analytics website www.honeywellanalytics.com
or the HART Foundation website www.hartcomm.org.
®
The DD file is written using HART
The DD file is supplied in .fm6, .fm8, .hhd and .hdd versions. It is compatible with a wide range of industry
standard products.
To use the HART communications, load the Searchpoint Optima Plus DD file into a suitable HART
®
(see manufacturer's instructions).

11.2 Connection

It is best to use a dedicated HART
HART handheld device.
®
If such an interface is not available, it is possible to connect to the HART
the current loop. For example, provided there is the minimum resistance of 230 Ω in the 4-20 mA loop, the
HART handheld device can be connected across the terminals in the junction box.
®
* Contact Honeywell Analytics for availability

11.3 Searchpoint Optima Plus User Interface

11.3.1 Access Levels and Password Protection

The Searchpoint Optima Plus user interface has three access levels. Default and Level 1 are available to the
user, while Level 2 access is restricted to Honeywell Field Service personnel.
The Default level is read-only and displays information about the current gas reading, configuration and unit
status, including active warnings and faults.
Level 1 access is required to test and calibrate the unit, and to make changes to the default configuration.
Level 1 access is password protected. The password is 8 digit alphanumeric (case sensitive), and it is
recommended that the user sets this to a password of their choosing. To avoid potential compatibility
issues between different HART
communications are being used to communicate with
®
protocol can be found at the HART
®
Device Description (DD) file, which is provided on the CD supplied
®
version 7, and is compatible with HART
®
interface point (for example the HALO* junction box) to connect a
®
host devices, ensure that a full 8 digit password is used.
®
Searchpoint Optima Plus with optional HART
Communications
®
Communication Foundation's website
®
DD Tokenizer versions 6 and 8.
®
signal across a load resistor in
®
48
output
®
Operating Instructions
2108M0550
protocol. HART
® ®
host
®