Rosemount™ 935
WinHost Configuration and Diagnostic Software
Reference Manual
00809-0200-4035 , Rev AA
April 2022
Legal notice
The Rosemount system described in this document is the property of Emerson.
No part of the hardware, software, or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system,
or translated into any language or computer language in any form or by any means without prior written permission of Emerson.
While great efforts have been made to ensure the accuracy and clarity of this document, Emerson assumes no responsibility
resulting from any omissions in this document or from misuse of the information obtained herein. The information in this
document has been carefully checked and is believed to be entirely reliable with all the necessary information included. Emerson
does not assume any liability arising out of the application or any use of any product or circuit described herein; neither does it
convey license under its patent rights or the rights of others.
WARNING
All individuals who have or will have responsibility for using, maintaining, or servicing the product must read this manual
thoroughly.
WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users’ equipment. This could
be intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting your system. Restrict physical access
by unauthorized personnel to protect end users’ assets. This is true for all systems used within the facility.
NOTICE
The source and detector are not field-repairable due to the meticulous alignment and calibration of the sensors and the respective
circuits.
Do not attempt to modify or repair the internal circuits or change their settings, as this will impair the system's performance and
void the Emerson product warranty.
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Contents
Chapter 1 Product overview.......................................................................................................5
1.1 Software overview....................................................................................................................... 5
1.2 Minimal requirements................................................................................................................. 5
1.3 Standard......................................................................................................................................5
Chapter 2 Installation.................................................................................................................7
2.1 Installing WinHost software......................................................................................................... 7
Chapter 3 Getting started...........................................................................................................9
3.1 Connecting the detector to the computer................................................................................... 9
3.2 Establish the COM port.............................................................................................................. 10
3.3 Run WinHost............................................................................................................................. 12
Chapter 4 Operating WinHost..................................................................................................13
4.1 Main window............................................................................................................................. 13
4.2 Setup table window................................................................................................................... 17
4.3 Set a new address...................................................................................................................... 19
4.4 Viewing micro versions.............................................................................................................. 19
4.5 Logging detector events............................................................................................................20
4.6 Viewing the log file.................................................................................................................... 22
4.7 Reading events from the log...................................................................................................... 23
4.8 Reading operation time............................................................................................................. 25
4.9 Viewing software version information........................................................................................26
Chapter 5 Maintaining detector............................................................................................... 27
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1 Product overview
The Rosemount™ 935 WinHost is communication software for the Rosemount 935
detector. The program displays information (such as status, gain, address, signals, and
LEL) and makes it possible to change the detector’s configuration.
1.1 Software overview
The Rosemount 935 WinHost software makes it possible to:
• Communicate with Rosemount 935 gas detectors
• Read status and parameters from the detector
• Record relevant detector data to a log file (S/N.txt)
• Calibrate the detector
1.2 Minimal requirements
Following requirements are the minimum for operating this software:
• Pentium® 3 GHz
• Windows XP,7,8, or 10
• 2 GB of RAM
• 10 GB hard disk free space
• Isolated RS-485 Interface Card to be defined as COM1, COM2, COM3, or COM4; or
RS-232/RS-485 converter to connect to standard COM port
1.3 Standard
EIA 485:
•
Electrical characteristics of enhanced Voltage Digital Interface Circuits.
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2 Installation
2.1 Installing WinHost software
To load your computer with the Rosemount 935 WinHost configuration and diagnostic
software:
Procedure
1. Copy the Rosemount 935 Winhost installation files into the correct drive.
2. Start the Rosemount 935 WinHost software installation by running the setup.exe
file.
3. Follow the installation instructions.
4. Connect the detector unit to the RS-485 communications port (see Connecting the
detector to the computer).
5. Start the Rosemount 935 WinHost software with the specified COM port number as
a parameter (see Establish the COM port).
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3 Getting started
3.1 Connecting the detector to the computer
Before you can perform any configuration or diagnostic operation on a detector, you must
connect the computer to the detector using the harness cable provided.
3.1.1 Connect the computer to a detector
Procedure
1. Connect one end of the USB cable to the computer USB port.
2. Connect the other end of the USB cable to the USB serial (RS-485) adapter.
3. Connect the serial port of the adapter to the harness cable.
3.1.2
3.1.3
3.1.4
Connect the detector to the harness cable
Procedure
1. Connect one side of the cable to detector terminal 5 for RS-485 (+).
2. Connect the other side of the cable to detector terminal 6 for RS-485 (-)
Connect a socket D-Type on the other side of the cable
Procedure
1. Connect RS-485 (+) to pin 2.
2. Connect RS-485 (-) to pin 1.
3. Connect RTN to pin 5.
Perform USB adapter setup
Procedure
1. Unscrew the cover of the USB adapter.
2. There are two options for setting up the jumpers:
Figure 3-1: USB adapter setup option 1
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Figure 3-2: USB adapter setup option 2
A. Dip switch
B. On
C. Off
3. Close the USB adapter cover.
4. Connect the cable.
CAUTION
If using a different adapter than the one recommended, check that the D-connector
adapter wiring is similar to the wiring above (if not, adjust the cable wiring to fit the
desired adapter).
3.2 Establish the COM port
Before using the software, you need to establish the number of the COM port.
To view the COM port used by the adapter:
Procedure
Select Start → Settings → Control → Panel → System → Hardware → Device Manager.
The COM port number is displayed. This is the COM port number you will use.
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Figure 3-3: COM port number
A. Assigned COM port
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3.3 Run WinHost
Procedure
1. Open the Winhost software application.
The opening window will appear
After a few seconds, the opening window disappears and the communication setup
dialog box appears:
Figure 3-4: Communication setup dialog box
2. From the drop-down menu, select the assigned communication port number (see
Establish the COM port).
3. Click Start.
The main window appears.
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4 Operating WinHost
4.1 Main window
The main window monitors the detector.
Note
For Windows XP, in the case of poor communication, press F12 and wait until good
communication is achieved.
Figure 4-1: Main window
The main window is divided into the following areas:
A. Device information
B. Signal information
C. Toolbar
The main window is divided into the following areas:
1. Device information
2. Signal information
3. Device status
4. Left menu
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4.1.1 Device information components
Table 4-1 describes the composition of the device information area in the main window.
Table 4-1: Device information components
Element Description
Address The address currently viewed by the software. (You can change the
current address by using the up and down arrows).
Status The detector’s current operational status.
Gain Electronic amplification.
Serial number The detector’s serial number. Each detector has a unique serial
number.
Model The detector’s model.
4.1.2 Signal information components
Table 4-2 describes the composition of the signal information area in the main window.
Table 4-2: Signal information components
Element Description
Signal Voltage signal after electronic amplification (depends on gain).
Reference Voltage reference after electronic amplification (depends on gain).
Ratio Ratio between signal and reference.
NQ Ratio Normalized ratio equals 1 when no gas is present.
Temperature Temperature inside the detector in °C.
Voltage VIN measurement.
LEL x m Actual gas reading of detector
Log rec num The detector’s available log records.
Table 4-3: Signal information components
Element Description
Signal 1 Voltage signal of Sensor 1 after electronic
amplification (depends on gain).
Reference Voltage signal of reference after electronic
amplification.
Signal 2 Voltage signal of Sensor 2 after electronic
amplification (depends on gain).
NQ Ratio 1 Ratio1/QO1 (Normalized ratio 1). Equals 1 when
no gas is present and goes down when gas is
introduced.
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Table 4-3: Signal information components (continued)
Element Description
NQ Ratio 2 Ratio2/QO2 (Normalized ratio 2) Equals 2 when
no gas is present and goes down when gas is
introduced.
4.1.3
Toolbar components
Table 4-4 describes the toolbar buttons.
Table 4-4: Toolbar Components
Button Button name Description
Exit Closes the application.
Address Opens a dialog box that
enables you to set a new
address location for the
detector. See Set a new
address.
Setup Opens a dialog box that
enables you to configure the
detector. See Setup table
window.
Version Displays the firmware version
and details. See Viewing micro
versions.
Secondary version N/A
Align Aligns the detector with the
source.
Master Seeks the address of the
connected detector (from 1 to
(1)
247).
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Table 4-4: Toolbar Components (continued)
Button Button name Description
Up and down arrows Changes the address currently
viewed by the software.
COM Status Indicates the status of the
communication between the
detector and the computer.
(1) Do not click the address finding button when more than 1 detector is connected.
4.1.4
Detector status
The WinHost software displays the status in two fields: a letter field and a number field.
The detector can have the following statuses:
Table 4-5: Detector Status
Characters Group Description
N0 Normal Normal
B0 Normal operation during
interference
C0 Maintenance call for low signal
or reference
P71, 72, 73 Fault Memory failure
V83 Low voltage
F31, 32 High noise
F35 4–20 mA failure
O0 Obscuration
M0 Misalignment
I0 Saturation
S0 Searching pulse
DD Disconnection
A0 Alarm Alarm
W0 Warning Warning
X0 Alignment Align
Y0 Standby
G0 Zero calibration
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4.2 Setup table window
The setup table window allows you to view and program the various detector functions.
Figure 4-2: Setup Table Window
To configure the heater state body:
Procedure
1. From the main window, click Setup.
The Setup table window appears.
2. Define the parameters as required.
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See Setup table parameters for all available parameters.
3. To define the new setup configuration, click Set.
4.2.1 Setup table parameters
Table 4-6: Gas Type
Gas type Description
1 100% Methane
2 100% Propane
3 100% Ethylene
Table 4-7: Full Scale Sensitivity (Read Only)
Value
(1)
500
(2)
800
(1) Relevant to methane and propane gas types
(2) Relevant to ethylene gas type
Table 4-8: Heater On
Temperature (˚C)
0
5
10
15
20
25
30
Table 4-9: Heater Mode
Mode Description
Off Heater is always in off mode
Auto The heater functions automatically according to
the following conditions:
• If the ambient temperature level is below
the Heater On parameter plus 10 °C, the
heater turns on.
• If the ambient temperature is higher than
the sum of Heater On plus 20 °C, the heater
turns off.
On Heater is always in on mode
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4.3 Set a new address
In this dialog box, you can set a new address for the detector. The valid detector addresses
are in range of 1 to 247.
To change the detector’s address:
Procedure
1. From the main window, click Address.
The New address dialog appears.
2. In the Set new address field, type the new address.
3. Click SETF3-Burn.
The new address is set.
Figure 4-3: New Address Dialog Box
4.4 Viewing micro versions
You can view the versions of the primary and secondary micro software at any time.
Procedure
1. To view the primary micro software version. From the main window, click Version.
A field appears, displaying the software version:
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Figure 4-4: Primary Micro Version
2. To view the secondary micro software version. From the main window, click SeC
ver.
A field appears, displaying the software version:
Figure 4-5: Secondary Micro Version
4.5 Logging detector events
Procedure
1. To log detector events. From the main window, click File → Start Log.
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Figure 4-6: Main Window
The log record dialog box appears:
2. In the text field, enter the log file period (in seconds).
3. Click OK
Logging begins. A line is written to the log (S/N.txt) every time the log file period is
over and any time there is a change in the detector’s status.
Figure 4-7: Log File Record Message
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4.6 Viewing the log file
Procedure
1. To view the log file. From the main window, click File → View log.
Figure 4-8: Main Window
The log file viewer dialog box appears:
Figure 4-9: Log File Viewer
2. In the text field, enter the detector’s serial number, and click OK.
3. The log file viewer window appears:
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Figure 4-10: Log File Viewer
4.7 Reading events from the log
The detector has a log that contains the 256 most recent status change events. To read
events from the log, the number of available records should first be read from the LOG REC
NUM value.
Procedure
1. To read the events from the log. From the main window, click File → Det events
log.
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Figure 4-11: Main Window
The log events dialog box appears:
Figure 4-12: Log Events
2. Enter the desired number of records to view, and click OK.
Figure 4-13: Loading Detector Events
The log record viewer appears:
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Figure 4-14: Log Record Viewer
4.7.1 Resetting log events
You can reset the log events.
Procedure
1. To reset the log events, From the main window, click File → Reset det log.
2. Wait until the LOG REC NUM field displays the value 0.
4.8 Reading operation time
The detector records the operating time (in minutes).
Procedure
To read the detector operating time. From the main window, click File → Det oper time.
The detector operating time field appears:
Figure 4-15: Operation Time
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4.8.1 Resetting detector operating time
You can reset the detector operating time from the file drop-down menu.
Procedure
To reset the detector operating time. From the main window, click File → Reset det oper
time.
4.9 Viewing software version information
The about window displays software version information.
Procedure
1. To access the about dialog box. From the main window, click File → About.
2. The about dialog box appears:
Figure 4-16: About Dialog Box
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5 Maintaining detector
The Rosemount 935 system requires only simple periodic maintenance to provide
satisfactory service and achieve maximum performance.
Use standard tools and equipment to maintain the detector and source. Recording the
periodic test results in the Maintenance log is recommended.
To maintain your detector
• Clean the optical surfaces of the detector and source once a month.
• Perform alignment and calibration once every six months or after each time the units
are moved or opened.
To clean the optical surfaces:
Procedure
1. Turn off the detector.
2. In places where dust or dirt have accumulated on the optical surface, clean the
surface with a small soft bristle brush.
3. Wash the surfaces thoroughly with water and a mild non-abrasive detergent.
4. Thoroughly rinse the glass surface with clean water, ensuring no residue is left
behind.
5. Dry the glass with a clean dry soft cloth.
6. Enter the following information into the Maintenance log: date and name of person
and company who performed the maintenance service.
Postrequisites
Turn on the detector.
Postrequisites
Perform zero calibration.
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For more information:
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2022 Emerson. All rights reserved.
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Emerson Terms and Conditions of Sale are available upon
request. The Emerson logo is a trademark and service mark of
Emerson Electric Co. Rosemount is a mark of one of the
Emerson family of companies. All other marks are the property
of their respective owners.
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