Oldham WX16 User manual

WX16
Sixteen Channel Controller
User Manual
P/N: 77036022-1
Revision: 0
Reference Firmware: 6.09 (rev. 4.7)

WX16 User Manual | 1
The information contained in this manual is accurate to our knowledge.
As a result of continuous research and development, the specifications of this product
may be modified at any time without prior notice.
IMPORTANT INFORMATION
The modification of the material and the use of parts of an unspecified origin shall
entail the cancellation of any form of warranty.
The use of the unit has been projected for applications specified in the technical
characteristics. Exceeding the values cannot in any case be authorized.
LIABILITY
Neither Industrial Scientific – Oldham nor any other associated company can be held
liable for any damages, including, without limitations, damages for the loss or
interruption of manufacture, loss of information, defect of the WX4 unit, injuries, loss of
time, financial, or material loss, or any direct or indirect consequence of loss occurring
in the context of the use or impossibility of use of the product, even in the event that
Industrial Scientific – Oldham has been informed of such damage.
SAFETY INSTRUCTIONS
Labels intended to remind you of the principal precautions of use have been placed on
the unit in the form of pictograms. These labels are considered an integral part of the
unit. If a label falls off or becomes illegible, see to it that it is replaced.

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Table of Contents
SECTION 1 4
Important Safety Issues 4
1.0General Description 5
1.1Data Display Screens 6
1.1.1Trend Screen 6
1.1.2Bar Graphs Screen 6
1.1.3Combination Screen 6
1.2Specifications 7
1.2.1DC Power Supply Requirements 7
1.2.1a150 Watt AC – 24 VDC Power Supply 7
1.2.2Relays 7
1.2.3Ambient Temperature Range 7
1.2.4Humidity Range 7
1.2.5Altitude 8
1.2.6Housings 8
1.2.6aNon-Intrusive Magnetic Keypad 8
1.2.7Approvals 8
SECTION 2 9
2.0Basic Operation 9
2.1Setup Menu Configuration 10
2.1.1Changing Menu Variables Using the Keypad 10
2.2Channel Configuration Menus 11
2.2.1Channel Setup Entry Menu 12
2.2.2Alarm 1 / Alarm 2 / Horn Relay Setup Menu 12
2.2.3Alarm 3 / Fault Alarm Menu 13
2.2.4Data From? Menu to Set Input Source 13
2.2.4aMin / Max Raw Counts Menus 14
2.2.4bMarker Menus 15
2.2.4cSensor Life Detection 15
2.2.5Linearization Menu 16
2.2.6Configure Menu 17
2.2.6aEunits / Measurement Name ASCII Data Fields 17
2.2.6bInput Measurement Range 17
2.2.6cDecimal Point Resolution 18
2.2.6dTurning Off Unused Channels 18
2.2.6e

Copy Data To? 18

2.2.7

Cal Mode 18

2.3

System Configuration Menus 20

2.3.1

Common Alarm Relays 1 & 2 21

2.3.2

10-0195 Discrete Relay “Failsafe” Mode 22

2.3.3

Common Horn Relay & Local Piezo 22

2.3.4

Comm Port Menus 23

2.3.4a

Master Port Radio Setup Menu 24


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2.3.5Eight / Sixteen Channel Modes 25
2.3.6Sensor Information 25
2.4Authorization Mode 25
2.5LCD Contrast Adjustment 26
SECTION 3 27
3.0Main I/O Interface PCB #10-0142 27
3.1Input / Output Optional PCB’s 28
3.1.1Optional Analog Input PCB #10-0158 28
3.1.2Optional Discrete Relay PCB #10-0195 30
3.1.3Optional *Bridge Sensor Input Board #10-0191 32
3.1.4Catalytic Bead Sensor Initial Setup 33
3.1.5Optional RTD / 4-20mA Analog Input Board #10-0170 34
3.1.6Optional 4-20mA Analog Output Board #10-0167 37
3.1.7Optional Clock / Printer Interface Board #10-0229 38
3.1.7aClock / Printer System Setup Menu 39
3.1.8Optional 24 VDC 150 Watt Power Supply 40
SECTION 4 41
4.0System Diagnostics 41
SECTION 5 44
5.0ModBus RS-485 Ports 44
5.1ModBus Slave Register Locations 44
SECTION 6 52
6.1Panel / Rack Mount Enclosure 52
6.2NEMA 4X Wall Mount Fiberglass Enclosure 53
6.3NEMA 4X Wall Mount 316 Stainless Steel Enclosure 55
6.4XP NEMA 7 Explosion-Proof Wall Mount Enclosure 56
6.5Main I/O & Option PCB Footprint Dimensions 56
SECTION 7 58
7.0Adding The “Wireless” Radio Kit Option 58
7.1Radio Setup Menu 59
7.2Wireless Receiver Mode 60
7.2.1Radio Status Alarms - Wireless Receiver Mode 61
7.3Wireless ModBus Slave Mode 61
7.4Wireless ModBus Master Mode 62
7.5Antenna Selection 62
7.5.1Dipole And Collinear Antennas 62
7.5.2

Yagi Antennas 63

7.5.3

Mounting Near Other Antennas 63

7.5.4

Coax Cables 64

7.6

Surge Protection & Grounding 64

7.6.1

Antenna Grounding 64

7.6.2

Connections to Other Equipment 65


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SECTION 1
Important Safety Issues
The following terms and symbols are used in this manual to alert the operator of
important instrument operating issues:
This symbol is intended to alert the user to the presence of important
operating and maintenance (servicing) instructions.
This symbol is intended to alert the user to the presence of dangerous
voltage within the instrument enclosure that may be sufficient magnitude to
constitute a risk of electric shock.
WARNINGS:
•Shock Hazard - Disconnect or turn off power before servicing this instrument.
•NEMA 4X wall mount models should be fitted with a locking mechanism after
installation to prevent access to high voltages by unauthorized personnel (see
Figure 6.2).
•Only the combustible monitor portions of this instrument have been assessed
by CSA for C22.2 No. 152 performance requirements.
•This equipment is suitable for use in Class I, Division 2, Groups A, B, C, and
D or non-hazardous locations only.
•WARNING- EXPLOSION HAZARD- SUBSTITUTION OF COMPONENTS
MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2.
•WARNING- EXPLOSION HAZARD- DO NOT REPLACE FUSE UNLESS
POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE
NON-HAZARDOUS.
•WARNING- EXPLOSION HAZARD- DO NOT DISCONNECT EQUIPMENT
UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN
TO BE NON-HAZARDOUS.
•Use a properly rated CERTIFIED AC power (mains) cable installed as per
local or national codes
•A certified AC power (mains) disconnect or circuit breaker should be mounted
near the controller and installed following applicable local and national codes.
If a switch is used instead of a circuit breaker, a properly rate CERTIFIED
fuse or current limiter is required to installed as per local or national codes.

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Markings for positions of the switch or breaker should state (I) for on and (O)
for off.
•Clean only with a damp cloth without solvents.
•Equipment not used as prescribed within this manual may impair overall
safety.
1.0 General Description
The Oldham WX16 Sixteen Channel Controller is designed to display and control
alarm event switching for up to sixteen sensor data points. It may also be set as an
eight channel controller for applications needing fewer inputs. Alarm features such as
ON and OFF delays, Alarm Acknowledge, and a dedicated horn relay make the WX16
well suited for many multi-point monitoring applications. Data may be input to the
WX16 by optional analog inputs or the standard ModBus®RTU master RS-485 port. A
ModBus RTU slave RS-485 port is also standard for sending data to PC’s, PLC’s,
DCS’s or even other WX16 Controllers. Options such as analog I/O and discrete relays
for each alarm are easily added to the addressable I2C bus. Option boards have 8
channels and therefore require 2 boards for 16 channel applications.
In addition to traditional analog and serial methods of providing monitored values, the
WX16 is also capable of sending and receiving wireless data as described in section 7
of this manual.
A 240 x 128 pixel graphic LCD readout displays monitored data as bar graphs, trends
and engineering units. System configuration is through user friendly menus and all
configuration data is retained in non-volatile memory during power interruptions. The
WX16 front panel is shown below in Figure 1.0 displaying the 8 channel bar graph
screen. Additional data screens are shown in Figure 2.0.
Figure 1.0

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1.1 Data Display Screens
The WX16 Controller offers three distinct graphic displays for depicting the monitored
data. These are Bar Graphs, 24 Hour Trend and Combination. Each is shown in Figure
2.0.
1.1.1 Trend Screen
The WX16 Trend screen shown in Figure 2.0 displays a 24-hour trend of input data for
the channel selected. Horizontal tic marks are each hour and vertical tick marks are
each 10% of full scale. Dashed lines indicate alarm levels. The graphic LCD is 240
pixels wide, so each pixel represents 1/10 hour, or 6 minutes worth of data. The trend
is 100 pixels high, so each represents 1% of full scale in amplitude. Since each data
point must be collected for 6 minutes before it may be displayed, it is likely input values
will fluctuate during this interval. Therefore, MAX, MIN and AVERAGE values are
stored in RAM memory for each 6-minute subinterval. To accurately portray the trend,
a vertical line is drawn between MIN & MAX values for each 6-minute subinterval. The
AVERAGE value pixel is then left blank, leaving a gap in the vertical line. This is
demonstrated in the noisy area of the 24-hour trend in Figure 2.0. If the MAX & MIN
values are within 2% of each other, there is no need for the vertical line, and only the
AVERAGE value pixel is darkened as in the quiet areas.
The top portion of each trend screen indicates channel #, real time reading in
engineering units, measurement name, range, and MIN, MAX & AVERAGE values for
the preceding 24-hour period. The SI field on the top right indicates number of seconds
remaining in the current 6-minute subinterval.
1.1.2 Bar Graphs Screen
The WX16 Bar Graphs screen shown in Figure 2.0 allows all active channels to be
viewed simultaneously. Both engineering units values and bar graph values are
indicated in real time. Lines across the bars indicate the alarm trip points making it
easy to identify channels at or near alarm. A feature in the Systems menu tree allows
new alarms to always force the LCD to the bar graphs screen. This is useful for
applications requiring channels with alarms to be displayed.
1.1.3 Combination Screen
The WX16 Combination screen shown in Figure 2.0 offers a view of a single channel
but displays the data as a 30-minute trend, bar graph and large engineering units. It is
also useful for testing inputs for stability since MAX, MIN & AVERAGE values refresh
each time this screen is selected. For example, to test stability over a one-hour period
for an input, begin timing as soon as the channel is selected. One hour later, record the
MAX, MIN & AVERAGE values. The difference between MAX & MIN indicates peak to
peak excursions over the one-hour period and AVERAGE is the average for the hour.
Longer or shorter tests may also be run. The numeric value shown below the bar graph
indicates number of minutes samples have been taken. After 999 minutes the

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AVERAGE buffer overflows and the message ERROR appears in the AVERAGE field.
Exiting this screen resets the buffer and clears the error message.
1.2 Specifications
1.2.1 DC Power Supply Requirements
Standard WX16 power requirements are 10-30 VDC @ 3 watts applied to terminals 9
& 11 of TB2 on the standard I/O PCB (see section 3.0). Optional features increase
power consumption as described below:
•Discrete Relay PCB option; add 2 watts per PCB (assumes all 8 relays are
energized).
•Analog Input PCB option; add 1/2 watt.
•4-20mA Output PCB option; add 1 watt.
•Catalytic Bead Sensor Input option; add 12 watts max (assumes maximum sensor
power consumption).
•TB2 terminals 10 & 12 of the standard I/O PCB provide a maximum of 500mA
fused output power for powering of auxiliary external devices such as relays,
lamps or transmitters. Power consumed from these terminals should be
considered when calculating system power consumption.
1.2.1a 150 Watt AC – 24 VDC Power Supply
* 110-120 VAC @3.2A max
* 220-240 VAC @ 1.6A max
* A slide switch on the front of the power supply selects AC input range.
The 10-0172 150 watt power supply (Figure 3.8) is for powering the WX16 and up to
16 detectors. A minimum of 5 watts per channel is available for powering of external
transmitters.
1.2.2 Relays
Common relays are standard and menus provide voting logic for
ALARM 1, ALARM 2, FAULT and HORN. Discrete relays are optional. All
relays are rated at 5 Amp for 28 VDC and 250 ~VAC RESISTIVE loads.
IMPORTANT: Appropriate diode (DC loads) or MOV (AC loads) snubber devices must
be installed with inductive loads to prevent RFI noise spikes. Relay wiring should be
kept separate from low-level signal wiring.
1.2.3 Ambient Temperature Range
-25 to 50 degrees C
1.2.4 Humidity Range
0 TO 90% R. H. Non-Condensing.

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1.2.5 Altitude
Recommended up to 2000 meters
1.2.6 Housings
* General purpose panel mount weighing 7 lbs and including hardware for 19” rack
mounting (Figure 6.1).
* NEMA 4X wall mount in fiberglass enclosure weighing 17 lbs (Figure 6.2).
* NEMA 7 wall mount suitable for DIV 1&2 Groups B,C,D weighing 110 lbs (Figure
6.4).
* Includes non-intrusive magnetic keypad.
1.2.6a Non-Intrusive Magnetic Keypad
The WX16 operator interface includes five front panel touch keys. A magnetic keypad
option offers these five keys with adjacent magnetic keys. This option is included as a
standard feature. It is useful in applications where it may be inconvenient to open the
enclosure’s door to access the touch keypad.
1.2.7 Approvals
CSA C22.2 No 1010.1 and ISA S82.02; CSA C22.2 No 152 for combustibles; UL 1604
/ C22.2 No 213 (Div 2 Groups A,B,C,D); EN55011 & EN61000 (CE Mark). CSA File # =
252022 and may be seen at: CSA-International.org.

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SECTION 2
2.0 Basic Operation
The WX16 offers 3 graphic screens for viewing monitored data and a Setup menu
screen for operator interface to configuration menus. They are shown below in Figure
2.0. The Bar Graphs screen allows viewing of all active channels simultaneously. The
Trend screen displays a 24-hour trend one channel at a time. The Combination screen
displays a bar graph, large engineering units and a
30-minute trend one channel at a time. Input channels may be displayed in sequence
with the UP/DOWN keys. The NEXT key switches between the 3 graphic data screens.
When WX16 power is applied, the graphic LCD returns to the screen active when
power was last removed.
Setup menus are entered by pressing EDIT from any data screen, and scrolling to the
desired menu using the UP/DOWN keys. Pressing EDIT again enters the selected
menu’s tree of variables. This Setup mode may be exited manually by pressing NEXT,
or automatically when no keys are pressed for 5 minutes. Alarm relays and front panel
alarm LED indicators remain active during the Setup mode. An AUTHORIZE menu
offers a password feature to prevent tampering with WX16 parameters.
Figure 2.0

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2.1 Setup Menu Configuration
Variables inside system and channel menu trees allow optimum WX16 configuration
for a wide range of demanding multi-point monitoring applications. Access to menus is
via the Setup mode by pressing EDIT and activating the Setup screen shown in Figure
2.0. Menu trees are provided for each of the 16 channels and another for system
variables. Select the desired menu by scrolling with UP/DOWN and EDIT to enter the
menus.
2.1.1 Changing Menu Variables Using the Keypad
Upon entering a menu, a pointer controlled by the UP/DOWN keys indicates the
selected variable. Some are simple YES/NO or ON/OFF entries toggled by pressing
the EDIT key. Others, such as Measurement Name and Eunits fields may have many
ASCII character possibilities. Allowed ASCII characters are as follows:
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz blank space
!"#$%&`()*+,-./0123456789:;<=>?@. EDIT places a cursor over the item and
UP/DOWN scrolls through each allowed entry. The NEXT key moves the cursor to the
next position within a field. When the field is complete, EDIT clears the cursor and
loads it into non-volatile memory where it is retained indefinitely. With no cursor
present, NEXT closes open menus in reverse order and returns the LCD to the most
recent data display.

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2.2 Channel Configuration Menus
Figure 2.1 illustrates the menu tree for configuring Channel variables. These items
affect only the specific channel selected. System specific variables are in the menu
tree shown in section 2.3.
Figure 2.1

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2.2.1 Channel Setup Entry Menu
The entry menu shown on the left side of Figure 2.1 allows access to all configuration
variables for the selected channel. These are, Alarm 1, Alarm 2, Alarm 3, Data
From?, Linearize, Configure and Calibrate.
2.2.2 Alarm 1 / Alarm 2 / Horn Relay Setup Menu
Alarms 1 and 2 are identical except A1 may not be acknowledged and front panel LED
indicators are yellow while A2’s are red. Since their configuration menus are the same,
only one is shown in Figure 2.2 for clarity.
Figure 2.2
The first entry determines the Setpoint value where the alarm trips. It is entered in
engineering units. For example, if a channel monitors 0-50 ppmH2S and the alarm
must trip at 10 ppm, the correct entry is 10.00.
•Latching determines either manual or automatic alarm reset operation. YES
requires a manual Alarm Reset to unlatch the alarm even though an alarm
condition no longer exists. YES also causes this alarm group’s common relay,
front panel LED, and optional discrete relay to latch. NO allows all outputs for this
alarm to automatically reset as soon as the alarm condition clears.
•TRIP ON is set to HIGH for increasing alarms or LOW for decreasing alarms to
determine if the alarm activates upon exceeding or falling below the setpoint.
•The ON DELAY / OFF DELAY entries allow ON and OFF time delays affecting
how long the setpoint must be surpassed before an alarm event transition occurs.
ON delays are limited to 10 seconds while OFF delays may be as long as 120
minutes. Delays are useful in many applications to prevent nuisance alarms and
unwanted cycling into and out of alarm conditions.
•The HORN ON entry allows linking this alarm to the common horn relay. NO
causes the alarm to have no effect upon the horn relay. Entering YES causes this
alarm to turn the horn relay on steady, or, to pulse it depending upon horn
configuration in they system menu (see section 2.3.1).
Discrete LED indicators on the front panel indicate the status of each alarm and relay.
Any new alarm event causes the associated LED to flash until Alarm Reset occurs
causing an acknowledged steady on condition. Operators should recognize new
alarms by a flashing LED. Alarm Reset also acknowledges, or deactivates, the horn
relay until another new alarm occurs.

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All relays are rated at 5 Amp for 28 VDC and 250 ~VAC RESISTIVE loads.
IMPORTANT: Appropriate diode (DC loads) or MOV (AC loads) snubber
devices must be installed with inductive loads to prevent RFI noise spikes.
Relay wiring should be kept separate from low-level signal wiring.
2.2.3 Alarm 3 / Fault Alarm Menu
The discrete channel alarms identified as Alarm 3/Fault may be configured either as a
3rd level alarm, or, as a Fault alarm indicating the input is out of range in the negative
direction. When used as a level alarm, features such as on / off delays, latching and
trip direction are also available. It is important to understand that though discrete
channel alarms (LED’s & optional discrete relays) may be set as Alarm 3 level alarms,
the common relay for this group is always a Fault alarm. The fault out of range
threshold for the channel is the most recent Fault trip point entered prior to changing
the menu to Alarm 3. The following example describes how to configure both the Fault
out of range and Alarm 3 level trip points for a channel. Example: If the common Fault
relay must trip as the input falls below negative 10% of full scale, and, the discrete
alarms trip as the input exceeds a level, then the –10% Fault setpoint must be entered
first. Toggle the TYPE menu entry to FAULT and enter –10.00% into the setpoint
entry. Next, toggle the menu back to LEVEL and enter the desired Alarm 3 level
setpoint. The -10% Fault value is retained in memory even though it no longer appears
on the menu.
Figure 2.3
2.2.4 Data From? Menu to Set Input Source
Channels may be independently configured to accept input data from the following
sources (also see Figure 2.4):
•An analog input PCB attached to the I2C bus.
•A sensor input PCB attached to the I2C bus.
•The ModBus RS-485 master port connected to ModBus slave devices.
Note: Each ModBus menu selection also requests the RTU # and the Alias
register # location of the data to be retrieved from the RTU. Alias register

WX16 User Manual | 14
numbers define the location of the variable representing the input value and
must be obtained from the manufacturer of the ModBus RTU device.
•Our 10-0288 Radio Modem may be connected to the ModBus RS-485 master
port to enable wireless communication to OLCT 200 wireless sensor
transmitters.
EDIT toggles the Data From entry between Analog, Analog with Local Cal or Sensor
Direct, WIRELESS RF900 and ModBus RTU (signed, unsigned & floating point).
Analog should be selected when the channel’s input comes from a transmitter or
monitoring device with a calibrated output such as 4-20mA. Analog with Local Cal is
available when the WX16 will be the point of calibration for the analog input. Sensor
Direct is identical to Analog with Local Cal and both activate the WX16’s Cal Mode
features (see section 2.2.7). Problems may arise if calibrations are performed in two
places upon the same signal, so Cal Mode menus are only visible when Sensor Direct
or Analog with Local Cal is selected. These selections should only be used when the
input originates from a non-calibrated signal source such as the Bridge Sensor Input
option described in section 3.1.3. These applications require the WX16 to be used as
the calibration point, since the sensors have no zero or span controls.
Figure 2.4
2.2.4a Min / Max Raw Counts Menus
The Min Raw and Max Raw counts entries included in Input Data From: menus define
the range of input counts that provide Measurement Range read-out values described
in section 2.2.6b. This menu entry is determined by the A/D converter resolution of the
channel’s input. For example, if the input is a 10 bit ModBus device with zero at 200
counts and 100% at 1000 counts, then this menu’s MIN should be set at 200 and MAX
at 1000. If communicating with the WX16’s optional 12 bit Analog Input PCB, the MIN
should be 800 and the MAX 4000.
If the input device’s resolution is unknown, the live counts variable on the bottom of the
screen displays actual raw A/D counts currently being read by this channel. This
reading may be used to test the input device for what A/D counts are provided for zero

WX16 User Manual | 15
and 100% if these values are unknown. Forcing the input device to read zero should
provide the A/D counts value needed to make this channel’s display also read zero.
Likewise, forcing the input device to read 100% should provide the A/D counts value
needed to make the WX16 channel’s display also read 100%.
If ModBus 32 BIT is selected, a Byte Order entry appears at the bottom of the menu.
This determines WORD and BYTE alignment of data at the remote ModBus transmitter
when sending its 4 byte IEEE Floating Point values. With the pointer on this entry, the
EDIT key toggles between the 4 possible modes. Min / Max Raw values are not used
in this mode.
Note Each Data From: item has a matching default Min/Max counts value of 20% to
100% with ± 5% over/under range applied. If the default value is incorrect for the input
device it should be edited.
2.2.4b Marker Menus
Some transmitters or monitoring devices providing WX16 inputs also indicate special
modes of operation, such as Calibration, Maintenance or Fault, by transmitting a
special <4mA or negative “Marker” value. The WX16 offers channel Marker menus for
detecting and indicating such events (see Figure 2.5). While active, the WX16 displays
a 6-digit ASCII message to indicate the special event, and if equipped with 10-0167 4-
20mA output option, the WX16 also transmits the same <4mA value.
•Marker Enabled turns the marker feature ON and OFF
•The negative Marker value is entered into the Marker % field as a negative
percent of full scale. For example, -15.62% of full scale detects a marker value of
1.5mA (1.5mA is -15.62% of full scale when 4-20mA is the range).
•The Mark As menu allows user entry of the 6-digit ASCII message to be displayed
when the marker is detected.
Figure 2.5
2.2.4c Sensor Life Detection
Sensor Life should only be activated when the Marker event is Calibration and when a
sensor life value is transmitted after each calibration. This feature is provided primarily
for use when interfacing the WX16 to Oldham’s OLCT 200 Transmitters, which may be

WX16 User Manual | 16
configured to transmit sensor life values after each calibration (see Figure 2.6). For
Sensor Life to record properly, the monitor must perform as follows: After the
Calibration Marker interval, 4.0mA transmits for 10 seconds to indicate its calibration
mode is complete. The monitor then transmits between 4.0mA and 5.0mA for five
seconds depending on remaining sensor life where 4.0mA = 0% and 5.0mA = 100%
remaining sensor life. The WX16 reads this value and records it as the channel’s
Sensor Life. Sensor Life is stored in the WX16 ModBus database and displayed as a
bar-graph in the Sensor Info screen (see section 2.3.6). It is a useful tool for planning
sensor replacement schedules.
Figure 2.6
2.2.5 Linearization Menu
The linearization menu allows each channel to have its own linearization curve stored
in the controller’s non-volatile memory. Input versus output points must be entered in
percent of full scale values. This means if the range is 0-200 ppmH2S, then 100 ppm is
50% of full scale. Zero input will provide a zero output and 100% input a 100% output.
Nine intermediate points may be entered to define the curve.

WX16 User Manual | 17
Figure 2.7
2.2.6 Configure Menu
From the entry level setup menu in Figure 2.8, the CONFIGURE menu may be entered
for setting variables defining how the controller presents monitored data to the various
graphic displays.
Figure 2.8
2.2.6a Eunits / Measurement Name ASCII Data
Fields
The first two items in this menu are for entering the 6 character engineering unit and 16
character Measurement Name ASCII fields. Eunits should define the units of measure
for what this channel is to display. Measurement Name should describe the source of
this data in the user’s terminology. Section 2.1.1 of this manual describes how to use
the front keypad to modify these fields.
2.2.6b Input Measurement Range
The ZERO / SPAN entries allow configuration of the measurement range displayed by
this channel. Measurement Range works along with A/D Counts menus, described in
section 2.2.4a, to define the range of the input signal’s engineering units. For example,

WX16 User Manual | 18
if a channel’s input is 4-20mA from a transmitter monitoring 0 to 10ppm chlorine, then
the Zero value should equal 0.000 and the Span value equal 10.00. The six ASCII
engineering units previously entered are automatically displayed at the top of each
menu as a reminder. Four digits must appear in this entry, so trailing 0’s may appear
here that are not displayed on other data screens.
2.2.6c Decimal Point Resolution
Resolution of displayed channel values is configured in this menu by setting the
number digits trailing the decimal point. Values are limited to a maximum of four digits,
and a polarity sign. An auto-ranging feature displays the highest resolution allowed by
this menu’s decimal point entry. For example, if three decimal points are entered, and
the range is 0 to 100ppm, the reading will be 0.000 at 0ppm and 100.0 at 100ppm.
However, this may be undesirable due to the high resolution at zero unless the
sensor’s output is extremely stable. If decimal points are limited to one, the 0ppm
reading becomes 0.0 and the 100ppm reading remains 100.0. Resolution may be
limited further by setting decimal points to 0. In the above example, this would cause
0ppm to display 0and 100ppm to display 100.
2.2.6d Turning Off Unused Channels
The Channel On? entry determines if this channel is to be utilized. Turning it off will
cause the controller to never process inputs applied to this channel and no alarms will
be tripped or data displayed. Inactive channels have a line drawn through them on the
Setup screen as indicated by channels 15 & 16 in Figure 2.0. If less than 9 channels
are to be activated, the WX16 may be set for 8 channel mode, deactivating channels 9-
16. This is done in the System Setup menu described in section 2.3. The WX16 will
only allow 15 channels to be turned off. At least one channel must remain on
2.2.6e Copy Data To?
This menu simplifies the Setup procedure by allowing similar channels to be copied
from one to another. For example, if all channels are identical except for the
Measurement Name entry, channel 1 could be configured and copied to channels 2 –
16. Only Measurement Name then must be configured on channels 2 – 16. Use EDIT
to increment channel numbers and UP/DN to point to Copy Now? Press EDIT once
more to copy.
2.2.7 Cal Mode
IMPORTANT! Each channel’s CALIBRATION menu is inactive unless its Input Data
From: menu, described in section 2.2.4, is set for Analog with Local Cal or Sensor
Direct. WX16 CAL MODE features allow pushbutton calibration of zero and span
values. This feature should be utilized only when there are no other zero/span controls
within the monitoring system, since it is inappropriate to calibrate a signal at more than
one point. Therefore, if calibration is to be performed at another transmitter or
monitoring device, the WX16 CAL MODE feature should not be used.