Precision Digital PD6830X Manual

PD6830X Explosion-Proof Modbus® Scanners

Instruction Manual

PRECISION DIGITAL CORPORATION

233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]

www.predig.com

• Fully-Approved Explosion-Proof Modbus Scanners

• Modbus Master, Slave, or Snooper Mode

• 0.4" (10.2 mm) 7 Alphanumeric Characters Lower Display for Process Variables, Custom Units, and Tags

• 5-Digit Decimal Display (ProtEX-MS2) or Feet & Inches Display (ProtEX-MFI)

• Display Mountable at 0°, 90°, 180°, & 270°

• SafeTouch Through-Glass Button Programming

• Scan up to 16 Modbus Process Variables

• Independent Scaling, Tag, and Unit for Each PV

• Backlight Standard on All Models

• Isolated 4-20 mA Output Option

• Two Isolated Pulse Outputs Standard, Up to 5 kHz

• Operating Temperature Range: -40 to 75°C (-40 to 167°F)

• FM Approved as Explosion-Proof / Dust-Ignition Proof / Flame-Proof

• CSA Certified as Explosion-Proof / Dust-Ignition Proof / Flame-Proof

• ATEX and IECEx Certified as Flame-Proof and Protection by Enclosure

• Conformal Coated PCBs for Dust and Humidity Protection

• Password Protection

• Data Logging Functions and Modbus Accessible Data

• Free ScanView EX Programming Software

• On-Board Three-Wire Isolated RS-485 with Modbus RTU

• Wide Viewing Angle

• Flanges for Wall or Pipe Mounting

• Explosion-Proof, IP68, NEMA 4X Enclosure

• Three 3/4" NPT Threaded Conduit Openings (One Plug Installed)

• 2" U-Bolt Kits Available

• Stainless Steel Tag Available

• 3-Year Warranty

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

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Disclaimer

The information contained in this document is
subject to change without notice. Precision
Digital Corporation makes no representations
or warranties with respect to the contents hereof;
and specifically disclaims any implied warranties
of merchantability or fitness for a particular
purpose.

• Read complete instructions prior to installation
and operation of the scanner.

• Risk of electric shock or personal injury.

• This product is not recommended for life support

applications or applications where malfunctioning
could result in personal injury or property loss.
Anyone using this product for such applications
does so at his/her own risk. Precision Digital
Corporation shall not be held liable for damages
resulting from such improper use.

• Failure to follow installation guidelines could
result in death or serious injury. Make sure only
qualified personnel perform the installation.

• Never remove the scanner cover in explosive
environments when the circuit is live.

• Cover must be fully engaged to meet
flameproof/explosion-proof requirements.

WARNING

Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Limited Warranty

Precision Digital Corporation warrants this
product against defects in material or
workmanship for the specified period under

“Specifications” from the date of shipment from
the factory. Precision Digital’s liability under this

limited warranty shall not exceed the purchase
value, repair, or replacement of the defective unit.
See Warranty Information and Terms &
Conditions on www.predig.com for complete
details.

© 2022 Precision Digital Corporation.
All rights reserved.

Introduction

The explosion-proof ProtEX-MS2 and ProtEX-MFI
Super Snoopers are serial input RS-485 Modbus®
RTU scanners. These Modbus devices are ideal for
hazardous areas or safe areas in need of a rugged
solution. The ProtEX-MS2 has a two-line decimal
display. The ProtEX-MFI top line displays level in feet
and inches up to 399 ft, 11 and 15/16 inches. It
includes a 20 segment tank level indicator.

Each scanner can accept up to 16 Modbus process
variables (PVs), from up to 16 devices. The scanners
automatically cycle through the PVs, with the ability to
manually cycle PVs or pause scanning.

Up to four math channels (CV1-CV4) may be used to
perform math functions on any of the input variables.
Math functions include sum, difference, weighted
average, ratio and more. Nested math functions may
be used in these math equations, allowing for
complex math functions.

The display is programmable to show any input, math
channel, units, or tags, on a variety of display
combinations between the top and bottom displays.

Standard features include SafeTouch through-glass
buttons for operating the scanner without removing
the cover, a backlight that makes the display mode
visible in any lighting condition, 511 points of input
data logging, and two open collector pulse or alarm
outputs. A 4-20 mA output is available as an option.

The enclosure is provided with three threaded conduit
holes and integrated pipe or wall mounting flanges.
One conduit plug is installed, and included in the
explosion-proof approvals.

Free, PC-based, ScanView EX software that connects
to the scanner via the PDA8068, PDA7485-I, or the

PDA8485-I is available for programming and setup of

the instrument.

The instrument can also be programmed using the
four SafeTouch through-glass buttons, without
removing the cover, or with four internal push-buttons.

The PD6830X includes on-board data logging of up to
511 points.

PD6830X Explosion-Proof Modbus Scanners

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Ordering Information

Model

Description

PD6830-AX0-I-2

Modbus RS-485 RTU scanner,
9-30 VDC power.

PD6830-AXA-I-2

Modbus RS-485 RTU scanner,
isolated 4-20 mA output,
9-30 VDC power.

PD6830-AX0-I-L

Modbus RS-485 RTU scanner,
feet & inches display,
9-30 VDC power.

PD6830-AXA-I-L

Modbus RS-485 RTU scanner,
feet & inches display,
isolated 4-20 mA output,
9-30 VDC power.

Accessories

Model

Description

PDAPLUG75

3/4" Metal Conduit/Stopping Plug

PDA0001

3/4" M-NPT to F-M20 Reducer

PDA0002

3/4" M-NPT to 1/2" F-NPT Reducer

PDA1024-01

24 VDC Power Supply for DIN Rail

PDA8068

USB Serial Adapter for Programming

PDA7485-I

PDA7485 RS-232 to RS-485 Converter

PDA8485-I

USB to RS-485 Isolated Converter

PDA6846

Steel 2" U-Bolt Kit. All Material: Zinc
Plated Steel; (1) U-Bolt for 2" Pipe with
(2 each) Washers, Lock Washers, and
Nuts.

PDA6846-SS

Stainless Steel 2" U-Bolt Kit. All
Material: Stainless Steel; (1) U-Bolt for
2" Pipe with (2 each) Washers, Lock
Washers, and Nuts.

PDA-SSTAG

Custom Stainless Steel Tag (see
website for convenient ordering form)

PDA1024-01 24 VDC Power Supply

The PDA1024-01 is a DIN rail mounted 1.5 A,
24 VDC power supply that can be used to power
the PD6830X.

PDA8068 USB Serial Adapter

The PDA8068 USB serial adapter is used to connect
the PD6830X directly to a computer via USB. It is
intended to be used for programming only. No live
monitoring is possible with this module.

PDA6846 2" U-Bolt Kits

The PDA6846 U-Bolt Kits provide a convenient way to
mount the PD6830X to 1.5" or 2" pipes. They are
available in steel and stainless steel.

PDA-SSTAG Stainless Steel Tag

The PDA-SSTAG is a laser etched stainless steel tag
that can be customized with three lines of text. Each
tag comes with a stainless steel wire and lead seal for
easy mounting wherever you need.

PD6830X Explosion-Proof Modbus Scanners

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Helpful Videos

The following videos might be of interest.

ProtEX Explosion-Proof Meter
Introduction

Learn about all the meters in the ProteX Series.

https://www.predig.com/videos/rJsvL_8PEyc

ProtEX Approvals Overview

The ProtEX Series carries extensive
international approvals for hazardous areas.

https://www.predig.com/videos/CTsNXQeRqTA

ProtEX Enclosure Unique Features

Learn about the unique features of the ProtEX
Series enclosures.

https://www.predig.com/videos/SwWKJ3L8ibo

Introduction to ProtEX SafeTouch
Programming

Through-glass buttons make programming easy
without removing the enclosure’s cover.

https://www.predig.com/videos/SafeTouch_Buttons

PD6830 ProtEX Pulse Input Flow
Rate/Totalizer

Learn all about the PD6830.

https://www.predig.com/videos/9Wwar2-G3j8

Vantageview Series Introduction

This series designed for use in safe areas
delivers the same functionality of the ProtEX
Series in a rugged plastic enclosure.

https://www.predig.com/videos/OC_trhGqTwU

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

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Table of Contents

Introduction .......................................................................................................... 2

Ordering Information ........................................................................................... 3

Specifications....................................................................................................... 8

General ............................................................................................................. 8

Modbus Operating Modes .............................................................................. 9

Serial Communications ................................................................................... 9

Modbus Scanner Process Variables .............................................................. 9

Math Channels ............................................................................................... 10

4-20 mA Transmitter Output ......................................................................... 10

Open Collector Outputs ................................................................................ 10

ScanView EX Programming Software ......................................................... 11

Product Ratings and Approvals ................................................................... 12

Electromagnetic Compatibility ..................................................................... 12

EU Declaration of Conformity ........................................................................... 13

Safety Information ............................................................................................. 13

Installation .......................................................................................................... 14

Unpacking ...................................................................................................... 14

Pre-Installed Conduit Plug ............................................................................ 14

Mounting ........................................................................................................ 14

Dimensions .................................................................................................... 14

Cover Jam Screw ........................................................................................... 15

Connections ................................................................................................... 15

Wiring Diagrams ............................................................................................ 16

DC Power Connection ................................................................................. 16

4-20 mA Transmitter Output Connections ................................................... 16

RS-485 Signal Connections ........................................................................ 16

Open Collector Output Connections............................................................ 16

Setup and Programming ................................................................................... 17

Overview ......................................................................................................... 17

ScanView EX Programming Software ......................................................... 17

SafeTouch Buttons ........................................................................................ 17

SafeTouch Button Tips and Troubleshooting .............................................. 18

Buttons and Display ...................................................................................... 19

Setting Numeric Values ................................................................................ 20

Setting Alphanumeric Labels (LABEL) .......................................................... 20

Main Menu .......................................................................................................... 21

Display Functions & Messages .................................................................... 21

Main Menu Programming .............................................................................. 23

Select Operating Mode (MODE) ...................................................................... 23

Master Mode (MASTER) ................................................................................... 24

PV Number Configuration (PV NUM) ............................................................ 24

Poll Time (T POLL) ...................................................................................... 25

Response Timeout (TIMEOUT) ..................................................................... 25

Retries Before Error (RETRIES) ................................................................... 25

Slave Mode (SLAVE)........................................................................................ 26

PV Number Configuration (PV NUM) ............................................................ 26

Slave Response Timeout (TIMEOUT) ........................................................... 26

Snooper Mode (SNOOPER) .............................................................................. 27

Snooper Mode PV Configuration (PV NUM) ................................................. 27

Snooper Mode Response Time (T RESP) ................................................... 27

Setup the Display (SETUP) ............................................................................. 28

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Setting Up the Display (DISPLAY) ................................................................. 28

Top Display (TOPDSP) .................................................................................. 29

Bottom Display (BOTDSP) ............................................................................. 29

PV Display Setup (PVSETUP) ....................................................................... 30

Math Channel Display Setup (MATH) ........................................................... 33

Tank Size Indicator (TANKSZ) ...................................................................... 35

Tag Display Time (T-TAG) ........................................................................... 35

Units Display Time (T-UNITS) ..................................................................... 35

Scan Time (T-SCAN) .................................................................................... 35

Serial Communications Settings (COMM) ...................................................... 36

Scanner Modbus ID (SCAN ID) ................................................................... 36

Baud Rate (BAUD) ........................................................................................ 36

Transmit Delay Time (TXDELAY) .................................................................. 36

Parity (PARTIY) ............................................................................................ 36

Advanced Menu ................................................................................................. 37

Display Functions & Messages .................................................................... 37

Advanced Menu Programming (ADVANCE) ................................................... 39

Open Collector Outputs (OUTPUT) ............................................................... 40

Scaling the 4-20 mA Analog Output (Aout) ................................................. 42

Selecting the Analog Output Source ........................................................... 42

Enter Display and Output Values ................................................................ 43

Math Channel (CV1 to CV4) Programming (MATH) ...................................... 43

Setting Up Passwords (PASSWRD) ................................................................ 45

Custom (CUSTOM) ......................................................................................... 46

System (SYSTEM) ......................................................................................... 47

Operation ............................................................................................................ 51

Front Panel Buttons Operation .................................................................... 51

Pause/Start Automatic Scanning ................................................................. 52

Manual Scanning ........................................................................................... 52

Reset Scanner to Factory Defaults .............................................................. 52

Factory Defaults & User Settings ................................................................. 53

Application Examples........................................................................................ 57

Example 1: Master Polling Multivariable Level Transmitters .................... 57

Example 2: Snooper Displaying Flow Rate from Modbus Flow Meters ... 61

Troubleshooting................................................................................................. 63

Troubleshooting Tips .................................................................................... 63

Quick User Interface Reference........................................................................ 64

PD6830X Explosion-Proof Modbus Scanners

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Table of Figures

Figure 1. Enclosure Dimensions – Front View .................................................... 14

Figure 2. Enclosure Dimensions – Side Cross Section View ............................ 14

Figure 3. Connector Board Mounted in Base of Enclosure ............................... 15

Figure 4. Connectors & Switches on Rear of Display Module........................... 15

Figure 5. DC Power Connections ......................................................................... 16

Figure 6. 4-20 mA Output Connections ............................................................... 16

Figure 7. RS-485 3-Wire Serial Connections ....................................................... 16

Figure 8. RS-485 5-Wire Serial Connections ....................................................... 16

Figure 9. Open Collector Output Connections.................................................... 16

Figure 10. Real Time Clock Display Example – Decimal Model ........................ 47

Figure 11. Real Time Clock Display Example – Feet & Inches Model ............... 47

PD6830X Explosion-Proof Modbus Scanners

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Specifications

Except where noted all specifications apply to operation at +25°C.

General

Display

Top Display

Five digits (0 to 99999),

0.7" (17.8 mm) high,
7-segment,
automatic lead zero
blanking.

Bottom
Display

Seven alphanumeric
characters,

0.4" (10.2 mm) high,
14-segment,
automatic lead zero
blanking.

Symbols

High alarm, low alarm,
SafeTouch button sleep
mode/disable, password lock

Feet & Inches
Display

(-L Models)

Top Display

Feet & Inches,

0.60" (15.2 mm) high,
0 to 399FT 1115/16 IN
7-segment, programmable
1/16 or 1/8 fraction display

Bottom
Display

Seven Characters,

0.4" (10.2 mm) high,
14-segment, 7-digits

Tank Level
Indicator

20-segments, F (Full)
and E (Empty)

Alarm
Indication

High and low alarm
Backlight

White

Display
Assignment

Top and Bottom Display*: Process
Variables (PV); Alternating PV and Units,
Tag and PV, or Tag, PV, and Units.
Bottom Display: All Top Display Options
or Off
Units and tag independent for each PV.
* On feet and inches display models, top
display used only for level Modbus
process variables or math channels.

Backlight

White; it can be disabled/enabled in the
Advanced - System menu. The backlight
is automatically turned off below -20°C.

Alarm
Indication

Flashing display plus HI/LO indicators

Scan and
Update Rate

Ambient > -20°C: Modbus PV scan rate
programmable from 2 to 99 seconds per
PV. Tag and units programmable for 1 to 5
second alternation.
Ambient < -20°C: All Modbus scan,
alternating units and tags 1 update/10
seconds minimum.

Underrange

Upper Display: Decimal display flashes

-9999
Level display flashes to 399FT 1115/16

IN

Lower Display: Flashes -999999

Overrrange

Upper Display: Decimal display flashes
99999
Level display flashes to 399FT 1115/16

IN

Lower Display: Flashes 999999

Programming
Method

Four SafeTouch through-glass buttons
when cover is installed. Four internal
pushbuttons when cover is removed.
Free ScanView EX software.

Password

Restricts modifications of programmed
settings to require re-entering the
password to make changes.

Input Power

9-30 VDC, 2.2 W

Data Logging

Up to 511 records, recorded 4/day at
specific times or at defined time intervals.
Record contains first eight enabled Mod­bus PVs; C1-4 if enabled; date; time, and
log number.

Isolation

All Models:

500 V power-to-RS-485
serial communications

-AXA Models:

500 V power-to-analog
output

Environmental

Operating temperature range: -40 to 75°C
Storage temperature range: -40 to 75°C
Backlight deactivated below
temperatures ≈ -20°C
Relative humidity: 0 to 90% non­condensing
Printed circuit boards are conformally
coated.

Non-Volatile
Memory

All programmed settings are stored in non­volatile memory for a minimum of ten
years if power is lost.

Connections

Screw terminals accept 12 to 22 AWG
wire

Enclosure

Explosion-proof die-cast aluminum with
glass window, corrosion resistant epoxy
coating, copper-free (0.3%)
Color: blue.
NEMA 4X, 7, & 9, IP68.
Conduit connections:
Three ¾" NPT threaded conduit openings.
One ¾" NPT metal plug with 12 mm hex
key fitting installed. Additional conduit
opening configurations and plugs may be
available; verify quantity and sizes on
specific device labeling during installation.

Mounting

May be mounted directly to conduit. Two
slotted flanges for wall mounting or NPS
1½" to 2½" or DN 40 to 65 mm pipe
mounting. See Dimensions on page 14.

Display
Orientation

Display may be mounted at 90°
increments
up to 270° from default orientation.

Overall
Dimensions

5.67" x 5.24" x 4.88" (W x H x D)
(144 mm x 133 mm x 124 mm)

Weight

5.00 lbs (80 oz, 2.27 kg)

Warranty

3 years parts and labor. See Warranty
Information and Terms & Conditions on

www.predig.com for complete details.

PD6830X Explosion-Proof Modbus Scanners

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Modbus Operating Modes

Master

Processes and displays data read from
Modbus RTU slave devices. Up to 16
process variables (PVs) from up to 16
slave devices. Each PV programmed
individually.

Slave

Processes data sent to it from a Modbus
RTU master device.

Note: Refer to Modbus Register Tables at

https://www.predig.com for details.

Snooper

Listens to the Modbus traffic and picks up
a specific register or registers being polled
by a Master device from a specific slave
device and processes the data being read.
Up to 16 process variables (PVs) from up
to 16 devices.
If multiple registers are polled by the
master with one command, only the first
returned value will be read.

Master Poll
Time

0.1 to 99.9 sec. Time between read­commands.

Master
Timeout

0.1 to 99.9 seconds. Time elapsed after a
poll request is made before the scanner
considers that request to have failed.

Number of
Retries

1-99. The number of retries the scanner
will make when requesting data before
reporting an error condition on the PV.

Snooper
Response
Time

0.1 to 99.9 seconds. Time since the last
PV update the before being considered an
error.

Slave Timeout

0.0 to 99.9 seconds. Time elapsed after
the last data received from a master before
the scanner considers the data to be out of
date. Programming 0 disables the timeout,
and PV data will be displayed indefinitely
despite not being updated regularly.

Serial Communications

Protocol

Modbus® RTU

Scanner Id

1 – 247. Specifies the address of the
PD6830X.

Baud Rate

1,200; 4,800; 9,600; 19,200; 38,400;
57,600; or 115,200 bps

Transmit Time
Delay

Programmable between 0 and 199 ms

Parity/Stop Bit

Even, odd, none with 1 stop bit, or none
with 2 stop bits

Byte-to-Byte
Timeout

Max of 1.5 character times or 750 μs

Note: Refer to Modbus Register Tables at www.predig.com for details.

Modbus Scanner Process Variables

PV Inputs

Up to 16 independently programmed
Modbus process variables (PVs) may
be scanned (Master mode) or detected
(Snooper mode). Each of the 16
Modbus PVs may be enabled or
disabled.

Slave Id

Specifies which device on the bus to
monitor. Valid for Master and Snooper
modes only.

Assign the slave ID or address (1-247)
of each of the devices containing the
process variables to be displayed
(Slave ID for PV1-16).

Register Number

Specifies which register(s) to read in
the devices on the bus.
5 Digit Function 03: 40001–49999;
04: 30001–39999; or 65: 1–9999.
6 Digit Function 03: 400001–465535 or
04: 300001–365535; or 65: 1–65535.

Range is dependent on Function Code
selection (03, 04, or 65)

Will read 2 registers for Long integer
and Floating point data types; the
register entered and the next
consecutive register number.

Valid for Master and Snooper modes
only.

Function Code

03, 04, and 65 (used to read 32 bit
registers). Master & Snooper modes
only.

Data Type

Select the data format of the PVs.
Select between short integer (2 byte),
long integer (4 byte), or floating point
(4 byte). Slave mode uses floating
point only.

Byte Order

Integer data programmable as binary
or BCD, and signed or unsigned. Byte
order selectable as big-endian (1234),
little-endian (4321), byte swap big­endian (2143), or byte swap little­endian (3412). Byte swap unavailable
for short.

PD6830X Explosion-Proof Modbus Scanners

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Math Channels

Math Result
Chanels

Four math channels CV1-CV4.
Each math channel may be
programmed for a math function.

Math Functions

Parameter 1 (PAR1), parameter 2
(PAR2), and parameter 3 (PAR3)
independently programmable for each
math channel C1-C4.

Math Function

Function

Setting

Addition

PAR1 + PAR2

SUM

Difference

PAR1 - PAR2

DIF

Multiplication

PAR1 * PAR2

MULTI

Division

PAR1 / PAR2

DIVIDE

Absolute diff.

Abs(PAR1 - PAR2)

DIFABS

Weighted avg.

((PAR1 – PAR2)*PAR3) +PAR2

WAVG

Draw

((PAR1 / PAR2) – 1) * PAR3

DRAW

Ratio

(PAR1 / PAR2) * PAR3

RATIO

Concentration

PAR1 / (PAR1 + PAR2) * PAR3

CONCEN

Constant

Constant

CONST

Long Integer

Constant

LONG

Floating Pt.

Constant

FLOAT

None

Disable

NONE

Absolute Value

Abs(PAR1)

ABS

Square Root

√(PAR1)

SQrt

Parameter
Selection

Parameter 1 (PAR1), parameter 2
(PAR2), and parameter 3 (PAR3)
selectable as: Modbus PV1-16, math
channel CV1-4 or any math function.

Parameter
Nested Math

Defining parameter 1 or 2 as a math
function will prompt for level 2
parameter 1 (L2P1), level 2 parameter
2 (L2P2), and/or level 2 parameter
3 (L2P3). Level 2 parameters function
identically as parameter 1 and 2 for
nested math functions.

4-20 mA Transmitter Output

Output Source

Modbus PV 1-16, math channel 1-4, or
disabled

Scaling Range

4.000 to 20.000 mA for any display range.

Disable

If disabled, the output will output 3.2 mA

Calibration

Factory Calibrated:

0.0 to 1000.0 = 4-20 mA output

Underrange

Output Underrange: 3.8 mA

Overrange

Display Overrange: 20.5 mA

Output Overrange: 20.5 mA

Accuracy

± 0.05% span ± 0.004 mA

Temperature
Drift

0.08 µA/C max from -40 to 75C ambient

External Loop
Power Supply

30 VDC maximum

Output Loop
Resistance

Power supply

Minimum

Maximum

24 VDC

10 

750 

30 VDC

100 

1100 

Open Collector Outputs

Output
Assignment

Two open collector pulse outputs.
Individually programmable for Modbus PV,
math channel, constant timed pulse output;
quadrature outputs (requires Out 1 and
Out 2), or off.

Rating

Isolated open collector, sinking NPN,
30 VDC @ 150 mA max.

Alarm Output

Assign to Modbus PV 1-16 or math
channel 1-4, for high or low alarm trip
point.

Alarm
Deadband

0-100% FS, user selectable

Alarm
Acknowledge

Front panel ACK button resets output and
screen indication.

Pulse Output
Count

The pulse output count (COUNT) is
programmable from 0.000001 to 9999999.
PV and math channels generate a frequency
equal to the PV or math value divided by the
Count value.

Pulse Output
Pulse Width

Unless otherwise stated, pulses are 50%
duty cycle for required frequency.

Pulse Output
Maximum
Frequency

5 kHz, pulse width at 50% duty cycle.
If the outputs exceed 5 kHz, the scanner
will display pUlse OVERRNG

Quadrature
Output

Output set to quadrature will lag the other
pulse output by 90° (1/4 duty cycle) at
output frequency. Minimum 1 Hz

Timer Output

Programmable on and off time, repeating
cycle. Minimum period 0.1 second,
maximum 100,000 seconds.
Minimum pulse time 0.01 second,
maximum 10,000 seconds.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

11

ScanView EX Programming Software

System
Requirements

Windows® 7/8/10 (Windows 32-bit or
64-bit operating systems)

Communications

PDA8068 Meter-to-USB Adapter for
programming,
PDA7485-I RS-232 to RS-485 Isolated
Converter (Cable not included),
PDA8485-I USB to RS-485 Isolated
Converter (Cable not included).

Protocol

Modbus RTU

Scanner Address

1-247

Baud Rate

1200 bps to 115,200 bps

Configuration

Configure one scanner at a time.
File format: Saved as “.mve".
Printing: Configuration can be printed.

Monitor file format: Saved as ".mcf".

Data Logging
Report

Saved as “.csv” file format.

The Monitor window is used for monitoring up to 16 process
variables; each is programmed individually to display information
in selected engineering units with custom tags.

The Display window is used for programming the upper
display, lower display, dwell times, PV display setup, math
display setup, and tank size indicator.

The Mode/PV Setup window is used for selecting master,
slave, or snooper modes and setting up from 1-16 PVs.

The Data Logging window is used to set the computer and
meter time/date, set the on-board data log set time or time
interval method, set PC data log intervals and time units, and
manual control of PC data log with start/stop buttons.

For detailed programming software instructions or to download
ScanView EX software, visit predig.com/scanview-ex.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

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Product Ratings and Approvals

FM

Explosion-proof for use in:
Class I, Division 1, Groups B, C and D
Dust-ignition proof for use in:
Class II/III, Division 1, Groups E, F and G; T6
Flame-proof for use in:
Class I, Zone 1, AEx d Group IIC; T6
Protection by Enclosure:
Zone 21, AEx tb IIIC; T85°C
Ta = -40 to 75°C.
Enclosure: Type 4X, IP66.
Certificate number: 3040391

CSA

Explosion-proof for use in:
Class I, Division 1, Groups B, C and D
Dust-ignition proof for use in:
Class II/III, Division 1, Groups E, F and G; T6
Flame-proof for use in:
Zone 1, Ex d IIC T6
Ta = -40 to 75°C.
Enclosure: Type 4X & IP66/IP68.
Certificate number: 2325749

ATEX

II 2 G D. Flame-proof for use in:
Zone 1, Ex d IIC T6 Gb
Protection by Enclosure for use in:
Dust Atmospheres (Zone 21)
Ex tb IIIC T85°C Db IP68.
Ta = -40°C to +75°C
Certificate number: Sira 10ATEX1116X

IECEx

Flame-proof for use in:
Zone 1, Ex d IIC T6 Gb
Protection by Enclosure for use in:
Dust Atmospheres (Zone 21)
Ex tb IIIC T85°C Db IP68.
Ta = -40°C to +75°C
Certificate number: IECEx SIR 10.0056X

Special Conditions for Safe Use:

Use suitably certified and dimensioned cable entry
device and/or plug. The equipment shall be installed
such that the supply cable is protected from
mechanical damage. The cable shall not be subjected
to tension or torque. If the cable is to be terminated
within an explosive atmosphere, then appropriate
protection of the free end of the cable shall be
provided.

Year of Construction:

This information is contained within the serial number
with the first four digits representing the year and
month in the YYMM format.

For European Community:
The PD6830X must be installed in accordance with
the ATEX directive 2014/34/EU, and the product
certificate Sira 10ATEX1116X.

Electromagnetic Compatibility

Emissions

EN 61326-1
Safety requirements for
measurement, control, and
laboratory use – Industrial Group 1
Class A ISM emissions
requirements
EN55022
Class A ITE emissions requirements
EN61000-6-4
Emissions for heavy industrial
environments - Generic

Radiated
Emissions

Class A

Immunity

EN 61326-1 Measurement, control,
and laboratory use – Industrial
EN61000-6-2 Immunity for heavy
environments - Generic

ESD

±4 kV contact, ±8 kV air

RFI –
Amplitude
Modulated

80-1000 MHz @ 10 V/m,

1.4-2.0 GHz @ 3 V/m,

2.0-2.7 GHz @ 1 V/m,
80% AM (1 kHz)

EFT

±2 kV DC mains, ±1 kV other

Telco Surge

±1 kV

CRFI

3 V, 0.15-80 MHz, 1 kHz 80% AM

Power Frequency
Magnetic Field

30 A/m 70% V for 0.5 period

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

13

EU Declaration of

Conformity

EU Declaration of Conformity is available in the
Documentation CD provided with the product under
the EU DoC menu.

Safety Information

• Read complete instructions prior to installation and
operation of the scanner.

• Installation and service should be performed only
by trained service personnel. Service requiring
replacement of internal components must be
performed at the factory.

• Disconnect from supply before opening enclosure.
Keep cover tight while circuits are alive. Conduit
seals must be installed within 18" (450mm) of the
enclosure.

• Verify that the operating atmosphere of the meter
is consistent with the appropriate hazardous
locations certifications.

• If the scanner is installed in a high voltage
environment and a fault or installation error occurs,
high voltage may be present on any lead.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

14

Installation

For Installation in USA: The PD6830X must be
installed in accordance with the National Electrical
Code (NEC) NFPA 70.

For Installation in Canada: The PD6830X must be
installed in accordance with the Canadian Electrical
Code CSA 22.1.

For European Community: The PD6830X must be
installed in accordance with the ATEX directive
2014/34/EU and the product certificate Sira
10ATEX1116X.

• Installation and service should be performed only
by trained service personnel. Service requiring
replacement of internal components must be
performed at the factory.

• Disconnect from supply before opening
enclosure. Keep cover tight while circuits are
alive. Conduit seals must be installed within
18" (450mm) of the enclosure.

Wiring connectors are accessed by opening the
enclosure. To access electrical connectors, remove
the 2 captive screws, then disconnect the ribbon
cable from the display module and set the display
module aside.

Unpacking

Remove the scanner from box. Inspect the packaging
and contents for damage. Report damages, if any, to
the carrier.

If any part is missing or the scanner malfunctions,
please contact your supplier or the factory for
assistance.

Pre-Installed Conduit Plug

The PD6830X typically includes three ¾" NPT
threaded conduit openings and one ¾" NPT metal
conduit plug with 12 mm hex key fitting installed.
Additional conduit opening configurations and plugs
may be available; verify quantity and sizes on specific
device labeling during installation. The pre-installed
plug and its installation are included in the hazardous
area approvals.

The conduit/stopping plug included in a typical
PD6830X has an internal 12 mm hexagonal socket
recess for removal.

• In hazardous areas, conduit and conduit/stopping
plugs require the application of non-setting
(solvent free) thread sealant. It is critical that all
relevant hazardous area guidelines be followed for
the installation or replacement of conduit or plugs.

Mounting

The PD6830X has two slotted mounting flanges that
may be used for pipe mounting or wall mounting.
Alternatively, the unit may be supported by the
conduit using the conduit holes provided.

Refer to Figure 1.

• Do not attempt to loosen or remove flange bolts
while the scanner is in service.

Dimensions

All units: Inches (mm)

Figure 1. Enclosure Dimensions – Front View

Figure 2. Enclosure Dimensions –

Side Cross Section View

3.35 (85.1)

2.25 (57.1)

(8.2)

5.25 (133.4)

(143.5)

5.65

0.32

3.35 (85.0)

4.15 (105.5)

3.22 (81.9)

(123.5)

4.86

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

15

Cover Jam Screw

The cover jam screw should be properly installed
once the scanner has been wired and tested in a safe
environment. The cover jam screw is intended to
prevent the removal of the scanner cover in a
flameproof environment without the use of tools.
Using a M2 hex wrench, turn the screw clockwise until
the screw contacts the scanner. Turn the screw an
additional ¼ to ½ turn to secure the cover.

• Excess torque may damage the threads and/or
wrench.

Connections

To access the connectors, loosen the cover jam
screw (if tightened) with an M2 hex wrench, remove
the enclosure cover and unscrew the two captive
screws that fasten the display module into the
enclosure. Disconnect the ribbon cable and remove
the display module. RS-485 serial connections are
made to a removable terminal block on the back of
the display module. Power and signal connections are
made to a barrier terminal connector in the base of
the enclosure. Grounding connections are made to
the two ground screws provided on the base – one
internal and one external. Use proper grounding
techniques for explosion-proof areas and observe all
local and national electric codes.

D+

RS-485 data B (non-inverting) connection

D-

RS-485 data A (inverting) connection

G

RS-485 shield ground connection

P+

DC Power positive terminal connection

COM

DC power supply input return/negative,
reset contact closure common

RST

Contact closure reset pull-up to 1.8 VDC

S+

Pulse input signal positive terminal
connection (Refer to LIM6830XPulse
for instructions).

S-

Pulse input signal negative terminal
connection (Refer to LIM6830XPulse
for instructions).

OC1+

Open collector output 1 positive terminal

OC1-

Open collector output 1 negative terminal

OC2+

Open collector output 2 positive terminal

OC2-

Open collector output 2 negative terminal

LP+

4-20 mA transmitter output DC power
positive terminal connection.

LP-

4-20 mA transmitter output DC power
negative terminal connection.

Refer to Figure 3 and Figure 4 for terminal positions.

• Observe all safety regulations. Electrical wiring
should be performed in accordance with all
agency requirements and applicable national,
state, and local codes to prevent damage to the
scanner and ensure personnel safety.

• Static electricity can damage sensitive
components.

• Observe safe handling precautions for
static-sensitive components.

• Use proper grounding procedures/codes.

• If the scanner is installed in a high voltage

environment and a fault or installation error
occurs, high voltage may be present on any lead
or terminal.

Figure 3. Connector Board Mounted in Base of

Enclosure

Figure 4. Connectors & Switches on Rear of Display

Module

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

16

Wiring Diagrams

DC Power Connection

DC power is wired to terminals P+ and COM as shown
in Figure 5. To maintain input isolation, a separate
power supply must be used to power the isolated
4-20 mA transmitter as shown in Figure 6.

Figure 5. DC Power Connections

4-20 mA Transmitter Output Connections

Output connections are made to two terminals labeled
LP+ and LP-. Connect to an input device such as a
remote display or chart recorder as shown in Figure 6.

Figure 6. 4-20 mA Output Connections

RS-485 Signal Connections

The scanner includes a 3-wire RS-485 serial
connection. The cabling used for an RS-485 serial
communications network should always be a high
quality cable such as Belden 8162 or Alpha 6203C. A
3-wire system requires two twisted pairs (the extra
twisted pair is needed for the signal ground).

Figure 7. RS-485 3-Wire Serial Connections

Figure 8. RS-485 5-Wire Serial Connections

Open Collector Output Connections

Open collector output 1 and 2 connections are made to
terminals labeled OC1+ and OC1-, and OC2+ and
OC2-. Connect the alarm or pulse input device as
shown in Figure 9.

Figure 9. Open Collector Output Connections

Power

Supply

COM RST

P+

S+ S-

LP- LP+

Power
Supply

4-20 mA Input

Device

ProtEX RS-485 DEVICE

D+
D­G

DATA
DATA

GND

ProtEX

DO

DO

DI

DI
GND

RS-485 DEVICE

D+
D­G

+

Alarm Indicator/

Pulse Counter
(e.g. PD6300)

-

5-30 VDC

150 mA MAX

P+

COM RST

S+

S-

OC1+

OC1-

OC2+

OC2-

LP+LP-

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

17

Setup and Programming

Overview

Setup and programming is done through the infrared
through-window SafeTouch buttons, using the
mechanical buttons when uncovered, or with
ScanView EX programming software. There are two
slide switches located on the display module. One
switch is used to lock or unlock the SafeTouch
Buttons. The other switch is used to configure the
pulse input
(Refer to LIM6830XPulse for instructions).

ScanView EX Programming Software

The fastest and easiest way to program the meter is using
the free ScanView EX programming software. This
software greatly simplifies the programming process and
allows the user to save configuration files for later use.

The ScanView EX software requires one of several

options to connect to a PC depending on the PC’s

hardware; The PDA8068 USB serial adapter,

PDA7485-I RS-232 to RS-485 converter, or the
PDA8485-I USB to RS-485 Isolated Converter to

connect the PC to the meter.

To download the ScanView EX programming
software, visit predig.com/scanview-ex.

SafeTouch Buttons

The PD6830X is equipped with four sensors that
operate as through-glass buttons so that it can be
programmed and operated without removing the
cover (and exposing the electronics) in a hazardous
area. These buttons can be disabled for security by
using the THRU-GLASS BUTTONS switch and
selecting the OFF setting. This switch is located on
the back of the removable electronics module.

SafeTouch Button Operation

To actuate a button, press and remove one finger
to the glass directly over the marked button area.
Remove finger to at least 4 inches away from the
window in between button activations. SafeTouch
and mechanical buttons may be held to cycle through
menus or digits in place of repeatedly pushing a
button.

SafeTouch Power Save Mode

(Symbol shown on -2 decimal models only)

SafeTouch buttons enter a power saving mode
after three minutes of inactivity. This mode is

indicated by a power symbol ( ) appearing in the
lower right of the display. Only the MENU button
is monitored in this mode. To activate the
SafeTouch buttons, press and hold the menu
button for up to five seconds. The display will
read AWAKE, and the SafeTouch buttons will be
fully enabled.

SafeTouch Disabled Mode
When the cover is removed, the four mechanical

buttons located next to the sensors may be used.
The sensors are disabled when a mechanical
button is pressed and will automatically be re­enabled after 60 seconds of inactivity. The

SafeTouch power symbol ( ) will blink in the
lower right of the display if the buttons are
disabled due to a mechanical pushbutton being
pressed.

SafeTouch Button Equalize Delay

The SafeTouch buttons are designed to
constantly recalibrate for ambient conditions.
When the cover position is changed, the cover is
removed, or an object is removed that was placed
over the front window, it may take a moment for
the SafeTouch buttons to recalibrate to the
change in conditions.

Allow up to 2 minutes for the SafeTouch
buttons to recalibrate to new conditions in
these cases where the cover position was
changed, or the front window is being
unblocked.

• SafeTouch will not work if two or more buttons
are detected as being pressed simultaneously.
Be careful to avoid triggering multiple buttons or
reaching across one button location to press
another.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

18

SafeTouch Button Tips and Troubleshooting

The SafeTouch Buttons are designed to filter normal
levels of ambient interference and to protect against
false triggering, however it is recommended that the
SafeTouch Buttons be turned off (slide THRU-GLASS
BUTTONS switch to OFF) if there is an infrared
interference source in line-of-sight to the display or if
the buttons are not needed.

SafeTouch Button Tips:

• To the extent possible, install the display facing
away from sunlight, windows, reflective
objects, and any sources of infrared
interference.

• Keep the glass window clean.

• Tighten the cover securely.

• Use a password to prevent tampering.

• If the cover has not been installed and secured

tightly, it may take a moment for the SafeTouch
buttons to properly self-calibrate when the
cover is tightened.

After all connections have been completed and
verified, connect the ribbon cable to the display
module, fasten the display module to the base, install
enclosure cover, and then apply power.

SafeTouch Button Equalize Delay

The SafeTouch buttons are designed to constantly
recalibrate for ambient conditions. When the cover
position is changed, the cover is removed, or an
object is removed that was placed over the front
window, it may take a moment for the SafeTouch
buttons to recalibrate to the change in conditions.

Allow up to 2 minutes for the SafeTouch buttons to
recalibrate to new conditions in these cases where
the cover position was changed, or the front
window is being unblocked.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

19

Buttons and Display

Decimal Display Model

Feet & Inches Display Model

Button Symbol

Description

Menu / SafeTouch Awake

Previous PV or Right Arrow

Up Arrow or Next PV
Enter or Start / Pause Scanning

Decimal Display

Symbols (-2 Models)

Description

HI

High Alarm

LO

Low Alarm

Settings Lockout Password
Enabled

SafeTouch Power
Save/Disable
Flashing: Temporarily
Disabled Due to Mechanical
Button

Feet & Inches Display

Symbols (-L Models)

Description

FT

Feet

IN

Inches and Fractional Inches

F

Tank Full Indicator

E

Tank Empty Indicator

HI

High Alarm

LO

Low Alarm

Menu Button

• Hold the Menu SafeTouch button when in
power save mode (display will show ) to

awaken SafeTouch buttons.

• Press the Menu button to enter Programming
Mode.

• Press the Menu button during Programming
Mode to return to the previous menu
selections.

• Hold the Menu button for 1.5 seconds at any
time to exit Programming Mode and return to
Run Mode.

• Press and hold the Menu button for 3 seconds
to access the Advanced Features of the
scanner.

Right / Previous Button

• Press Previous to manually display the
previous PV or input display.

• Press the Right arrow button in programming
mode to move to the next digit or decimal
position.

• Press the Right arrow button in programming
mode to go backward through most selection
menus.

Up / Next Button

• Press Next to manually display the next PV or
input display.

• Press the Up arrow button in programming
mode to scroll forward through the menus,
decimal point, or to increment the value of a
digit.

Enter / Scan Button

• Press Scan to pause automatic scanning.

• Press Scan to resume automatic scanning

when paused.

• Press the Enter button in programming mode
to access a menu or to accept a setting.

PREV

NEXT

SCAN

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

20

Setting Numeric Values

The numeric values are set using the Right and Up
arrow buttons. Press Right arrow to select next digit
and Up arrow to increment digit.

The digit being changed blinks.
Press the Enter button, at any time, to accept a

setting or Menu button to exit without saving changes.
The decimal point is set using the Right or Up arrow

button in the Setup, Decimal Point menu.

Setting Alphanumeric Labels (LABEL)

Fully alphanumeric values are set using the Right
button to select the digit, the Up and Right arrow
buttons to select the digit reading, and the Enter
button to confirm and select the next digit.

Menus using this entering method include tags and
custom units. After selecting the digit, and using the
Up and Right arrows to modify the digit, the display
will read CHAR.

Press Enter to confirm the new digit and proceed to
the next digit.

The digit being changed blinks.
Press the Menu button to exit without saving changes.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

21

Main Menu

Display Functions & Messages

The scanner displays various functions and
messages during setup, programming, and operation.
The following table shows the main menu MODE,
SETUP, and COMM menu functions and messages in
the order they appear in the menu. Functions and
messages that appear in the Advanced menu can be
found in the Advanced Menu section on page 37.

Display

Parameter

Action/Setting

MODE

Mode

Enter Mode menu

MASTER

Master Mode

Select Master mode

PV NUM

PV Number

Enter the Modbus PV
configuration menu

PV 1

PV 1 – PV 16

Enter PV1 to PV16
configuration menus

ENABLE

Enable

Enable the Modbus
PV

SLAVEID

Slave ID

Enter the slave
Modbus ID

FUNCODE

Function Code

Set the Modbus
function code

REG NUM

Register
Number

Enter the slave
register number

DATATYP

Data Type

Set the data type

FLOAT

Float

Float data type

SHORT

Short

Short integer data
type

LONG

Long

Long integer data
type

BINARY

Binary

Binary integer type

BCD

BCD

Binary coded
decimal integer type

UNSIGND

Unsigned

Unsigned integer
type

SIGNED

Signed

Signed integer type

BYTE

Byte

Select the byte
format

1234

1243

Big endian

4321

4321

Little endian

2143

2143

Big endian with byte
swap

3412

3412

Little endian with
byte swap

DISABLE

Disable

Disable the Modbus
PV

T POLL

Poll Time

Set the Modbus PV
poll time

TIMEOUT

Response
Timeout

Set Modbus
communication
response timeout

Display

Parameter

Action/Setting

RETRIES

Retries

Set number of retires
before display a PV
communication error

SLAVE

Slave

Select Slave mode

PV NUM

PV Number

Enter the Modbus PV
configuration menu

PV 1

PV 1 – PV 16

Enter PV1 to PV16
configuration menus

ENABLE

Enable

Enable the Modbus
PV

DISABLE

Disable

Disable the Modbus
PV

TIMEOUT

Response
Timeout

Set Modbus
response error time

SNOOPER

Snooper Mode

Select Snooper
mode

PV NUM

PV Number

Enter the Modbus PV
configuration menu

T RESP

Response Time

Set Modbus
response error time

SETUP

Setup Menu

Enter Setup menu

DISPLAY

Display

Enter the Display
menu

TOPDSP

Top Display

Set the function of
the top display

PV

PV

Display Modbus PV

PV-U

PV & Units

Display Modbus PV
and units

TAG-PV

Tag & PV

Display tag and
Modbus PV

TG-PV-U

Tag, PV, & Units

Display tag, Modbus
PV, and units

BOTDSP

Bottom Display

Set the function of
the bottom display

TAG

Tag

Display tags

TAG-U

Tag & Units

Display tags and
units

UNITS

Units

Display units

PV

PV

Display Modbus PV

TG-PV-U

Tag, PV, & Units

Display tag, Modbus
PV, and units

OFF

Off

Turn off display

PVSETUP

PV Setup

Enter the PV Setup
menu

PV-1

PV-1 to PV-16

Select PV1 to PV16

FORMAT

Format

Enter PV display
format

TAG

Tag

Enter to edit PV tag

UNITS

Units

Enter to edit PV units

DISP.DP

Display Decimal
Point

Set the PV display
decimal point

Note: Not available
on Ft-In models.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

22

Display

Parameter

Action/Setting

FLOAT.DP

Float Decimal
Point

Set the float decimal
point location (if PV
is float data type
only)

Note: Not available
on Ft-In models.

SCALE

Scale

Select the PV display
scaling: factor, linear
2-point, or multi-point

FACTOR

Conversion
factor

Conversion factor
scaling

LINEAR

Linear

Linear scaling

MP-SCAL

Multipoint
Scaling

Multipoint scaling for
PV1

MATH

Math

Enter Math menu
(Will only appear if at
least one math
channel is enabled)

CV 1

CV1 to CV4

Select math channel
to configure CV 1 to
CV4

FORMAT

Format

Enter CV display
format

TAG

Tag

Enter the CV tag

UNITS

Units

Enter the CV units

Disp.DP

Display Decimal
Point

Set the CV display
decimal point

TANKSZ

Tank Size

Enter tank level
indicator full value (in
feet for Ft & In
version only)

T-TAG

Tag Time

Enter tag display
time

T-UNITS

Units Time

Enter unit display
time

T-SCAN

Scan Time

Enter scan cycle time
(e.g. PV dwell time)

PULSE.IN

Input

Refer to pulse input
manual

COMM

Communications

Enter the
Communications
menu

SCAN ID

Scanner ID

Enter the scanner’s

Modbus ID (used if
setup as a slave)

BAUD

Baud Rate

Select baud rate

TXDELAY

Transmit Delay

Enter the transmit
delay

PARITY

Parity

Select parity mode

EVEN

Even

Even parity

ODD

Odd

Odd parity

NONE 1

None, 1 Stop Bit

No parity, 1 stop bit

NONE2

None, 2 Stop
Bits

No parity, 2 stop bits

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

23

Main Menu Programming

The main menu is used to navigate the programming
menus and separates the most commonly used
functions. The Mode menu is used to setup the
scanner as a Modbus master, slave, or snooper, and
define Modbus PVs. The Setup menu is used to setup
general scanner parameters, such as display
assignments. The Comm menu configures the
RS-485 serial communications settings. The
Advanced menu is used to configure more complex
settings not used with most common applications.

Press Menu button to enter Programming Mode then
press the Up arrow button to scroll through the main
menu.

Press Menu, at any time, to return to the previous
menu selection. Press and hold the Menu button for

1.5 seconds at any time to return to Run Mode.
Changes to the settings are saved to memory only

after pressing Enter.
The display moves to the next menu every time a

setting is accepted by pressing Enter.

• The Advanced menu contains parameters not
required for all applications. The setup of features
and functions detailed in the Advanced features
menu are found in the Advanced Menu
Programming (ADVANCE) section on page 39.

Select Operating Mode (MODE)

The Mode menu is used to select master, slave, or
snooper operating mode. Only one of these modes
may be used. The programming of each mode is
detailed below.

Master mode is used to configure the scanner as a
Modbus master. It will poll up to 16 registers in up to
16 Modbus slave devices. Slave mode is used to
configure the scanner as a Modbus slave. A Modbus
master must be used to send data to the Modbus
registers of the scanner for display. Snooper mode is
used to listen for data polled by a Modbus master on
the Modbus network. The scanner will detect up to 16
Modbus registers polled by the master.

Press the Enter button to access any menu or press
the Up arrow button to scroll through choices.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

24

Master Mode (MASTER)

In Master mode, the scanner will poll up to 16 Modbus
registers in up to 16 Modbus devices. It will serve as a
Modbus network master; polling Modbus slave
devices for Modbus process variables (PVs) that can
be displayed or used in the math functions.

Programming the Modbus Master mode will include
defining the Modbus PV registers and devices,
selecting the polling time interval, and the maximum
response time allowed.

PV Number Configuration (PV NUM)

The PV Number menu is used to enable and disable
each Modbus PV 1 to PV 16. The Modbus device and
registers are configured for each of the enabled PVs.
PVs that are not enabled will not appear in other
programming menus for display or inclusion in math
channel functions (CV).

PV1 to PV16 are programmed using identical menus.

• To enable a PV it must be assigned to a specific
slave ID.

Enable/Disable PV (ENABLE, DISABLE)

Enable or disable the Modbus PV. Disabled PVs will
require no additional configuration. Disabled PVs will
not be accessible in other menus or functions.

Slave ID (SLAVEID)

Enter the Modbus ID of the slave device that contains
the PV information.

Function Code (FUNCODE)

Select the Modbus function code necessary to read
the device. Use the Up and Down arrows to select
the appropriate function code, and press Enter to
accept the function code.

See the PD6830X Modbus Register Table available at

www.predig.com for more information on function

codes.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

25

Register Number (ReG NUM)

Enter the Modbus register number of the PV
information on the Modbus slave device defined in the
Slave ID parameter.

Select 5-Digit or 6-Digit Register Number

Data Type (DATATYP)

Enter the data type of the PV information in the
Modbus register. Selectable data types are float, short
integer, and long integer.

Use the Up and Down arrows to select the
appropriate data type and press Enter to accept.

For short and long integer types, select binary or
binary coded decimal (BCD) formats as well as
signed or unsigned data format.

Byte Format (BYTE)

Select the PV data byte format as it is stored in the
Modbus slave device data register. Use the Up and
Down arrows to select the appropriate data type
related to endianness and byte order.

Byte
Selection

Byte Type

Description

1234

1234

Big endian

4321

4321

Little endian

2143

2143

Big endian with
byte swap

3412

3412

Little endian with
byte swap

Poll Time (T POLL)

Enter the time between read command sequences. In
other words, how often the display values are updated
in Master mode. The poll time defines how often the
device will begin scanning all enabled Modbus PVs.
For example, if the Poll Time is two seconds, the
scanner will begin polling all Modbus PVs every two
seconds.

This parameter defines the approximate time between
updates of a PV value. Communications errors may
make updating a PV take longer.

Note: Depending on the Response Timeout, and the
number of PV poll requests that time out, it may take
more than one poll time to poll all enabled Modbus
PVs. In this scenario, the scanner will begin another
round of polling at the next poll time interval.

For example: Due to transmission errors, the scanner
with a 2 second poll time requires 2.5 seconds to
update all the Modbus PVs. It will begin the second
polling all the Modbus PVs at 4 seconds.

Note: The feet and inches display models enter this
value in the format XX.X seconds, but no decimal
point is present in the display. For example: enter 20
for a poll time of 2.0 seconds.

Response Timeout (TIMEOUT)

Enter the time the scanner will wait after a request for
information has been sent to a slave device before it
will assume an error on that request. Increasing the
timeout will help eliminate polling errors when polling
slow devices. Increasing the response timeout will
also slow the PV update rate in systems that are
experiencing communications failures.

Note: The feet and inches display models enter this
value in the format XX.X seconds, but no decimal
point is present in the display. For example: enter 20
for a poll time of 2.0 seconds.

Retries Before Error (RETRIES)

Enter the number of consecutive failures to poll a
device that will result in a communications error
message on the display. This is the number of times a
specific PV must be polled before the display
indicates a communication failure rather than
displaying the available PV data. Increasing this
number will allow for more polling failures before a
communication error is detected, which may be
required for some unreliable networks. Increasing this
number will also increase how long old data is
displayed before a communication error is indicated.

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Slave Mode (SLAVE)

In Slave mode, a Modbus master may write up to 16
Modbus PVs to the scanner, which can then display
and process the data in the PV Modbus registers,
such as displaying the data and using them in math
functions.

Programming the scanner for Modbus Slave mode
will include defining the Modbus PV registers that are
enabled, as well as selecting the time between data
writes before an error is assumed. In Slave mode the
scanner accepts floating point data (Byte order: 1234
big endian).

PV Number Configuration (PV NUM)

The PV Number menu is used to enable and disable
each Modbus PV 1 to 16. PVs that are not enabled
will not appear in other programming menus for
display or inclusion in math channel functions (CV).
PV1 to PV16 are programmed in identical menus.

Enable/Disable PV (ENABLE, DISABLE)

Enable or disable the Modbus PV. Disabled PVs will
require no additional configuration. Disabled PVs will
not be accessible in other menus or functions.

The Slave mode accepts floating point data type (Byte
order: 1234 big endian).

Slave Response Timeout (TIMEOUT)

If the Modbus data registers for the enabled Modbus
PVs are not updated within a certain period of time,
the scanner can presume that there is an error with
the data, or that it is too out of date to be worth
displaying. In this case, the scanner will display this
PV as NONE (NONE).

At the Response Timeout menu, enter the time limit
for the scanner to continue to display data written to
the Modbus PV register. To disable this feature, and
always display the last data written to the Modbus
register regardless of how long ago the data was
updated, set this value to 0 seconds.

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Snooper Mode (SNOOPER)

In Snooper mode, the scanner will act as a Modbus
network packet sniffer. The Snooper mode is used to
listen to data being transmitted on the bus. Up to 16
process variables may be read from the RS-485 bus
and displayed or used in math functions. The same
process variables can be displayed in multiple
locations.

Notes:
The poll time for scanners set up for Snooper mode

must be greater than the Master’s poll time. This
setting corresponds to the time window during which
the Snooper listens to the bus for a reply by the slave
device being polled by the master device. As soon as
the Snooper detects a new reply on the bus, the
display is updated. If there is no reply within the
Response Time setting, the Snooper goes into
communications break condition.

If multiple registers are polled by the master with one
command, only the first returned value will be read.

To minimize the possibility of communication errors
and communication break conditions, use a poll time
of 5 seconds or more with slow baud rates (e.g. 4800
bps or less).

• If multiple registers are polled by the master with
one command, only the first returned value will
be read.

• To snoop multiple PVs, the master must request
one PV at a time.

Snooper Mode PV Configuration (PV NUM)

The PV Number menu is used to enable and disable
each Modbus PV 1 to 16. This menu is identical in
Master mode. Refer to PV Number Configuration (PV
NUM) on page 24.

Snooper Mode Response Time (T RESP)

If the Modbus data registers for the enabled Modbus
PVs are not updated within a certain period of time,
the scanner can presume that there is an error with
the data. After this time has passed, and updated
data has not been detected on the Modbus network,
the scanner will display this PV as NONE (NONE).

At the Response Time menu, enter the time limit the
scanner will display the Modbus PV register last data
monitored before it assumes an error.

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28

Setup the Display (SETUP)

The Setup menu is used to select what information
will be displayed on the top and bottom display.

The Display menu is used to select the top and
bottom display to show Modbus PVs and math
channels, and combinations of units and tags. The
math channels are configured in the Advanced
Features menu.

• The Pulse Input menu is not described or used in
this manual.

• For instructions on how to use and configure the
pulse input, refer to the LIM6830XPulse manual.

Press the Enter button to access any menu or press
the Up arrow button to scroll through choices.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

Setting Up the Display (DISPLAY)

The Display menu is used to set parameters to show
on the top and bottom displays; select which PVs will
appear on the top and bottom displays; set how long
to display the tags and units; and program the scan
time for each channel (how long a specific channel
will display before moving to the next value).

Note 1: The Top Display menu does not appear on

feet and inches display models.

Note 2: The math menu (MATH) is only visible if a

math channel has been enabled. See Math
Channel (CV1 to CV4) Programming (MATH)
on page 43 for details about enabling the
math channels.

Note 3: The Tank Size menu appear only in Feet and

Inches Display Models.

Note 4: The Tag Time and Units Time menus will not

appear unless the Top Display or Bottom
Display parameters are set to display or
alternate a tag or unit.

Refer to manual
with pulse input

Note 4

Note 4

Note 3

Note 1

Note 2

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Top Display (TOPDSP)

Note: The Top Display menu does not appear on feet
and inches display models.

The Top Display menu sets what Modbus PV
information will be displayed on the top display. A
combination of Modbus PVs, tags, and units can be
selected to appear individually or as an alternating
display.

See PV Setup menu for details on selecting what
Modbus PVs appear on the top and bottom display.

Press Enter to access the Top Display menu and Up
button to scroll through choices. Press Enter to make
a selection and proceed to the next menu.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

Top Display
Selection

Parameter

Description

PV

PV

Display Modbus PVs

PV-U

PV and Units

Display alternating
Modbus PVs and
units

TAG-U

Tag and Units

Display alternating
tags and units for
bottom Modbus PVs

TAG-PV

Tag and PV

Display alternating
tag and Modbus PVs

TG-PV-U

Tag, PV, and
Units

Display alternating
tag, Modbus PVs,
and units

Note: Some top display selections may not appear if
no PV is assigned to display on the top display.

Bottom Display (BOTDSP)

The Bottom Display menu sets what Modbus PV
information will be displayed on the bottom display.
The available programming options for the bottom
display are determined by the Top Display menu
setting. For Ft & In level display models, the
selections for the Top Display menu are fixed. A
combination of Modbus PVs, tags, and units can be
selected to appear individually or as an alternating
display.

A selection without a PV component will use the
bottom display to show the unit or tag of the PV
displayed on the top display. These will change as
the top display PVs are scanned.

See PV Setup menu for details on selecting what
Modbus PVs appear on the top and bottom display.

Press Enter to access the Bottom Display menu and
Up button to scroll through choices. Press Enter to
make a selection and proceed to the next menu.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

Top
Display
Selection

Bottom
Display
Selection

Parameter

Description

Feet &
Inches
Display
Models

TAG

Tag

Display tag

TAG-U

Tag and
Units

Display alternating
tag and units

UNITS

Units

Display units

PV

PV

Display Modbus
PVs

TG-PV-U

Tag, PV,
and Units

Display alternating
tag, Modbus PVs,
and units

OFF

Off

Display is turned
off during normal
operation

PV

UNITS

Units

Display units

TAG

Tag

Display tag

TAG-U

Tag and
Units

Display alternating
tag and units

OFF

Off

Display is turned
off during normal
operation

PV-U

TAG

Tag

Display tag

PV

PV

Display Modbus
PVs

TAG-PV

Tag and
PV

Display alternating
tag and Modbus
PVs

TG-PV-U

Tag, PV,
and Units

Display alternating
tag, Modbus PVs,
and units

OFF

Off

Display is turned
off during normal
operation

TAG-PV

UNITS

Units

Display units

PV

PV

Display Modbus
PVs

TAG-PV

Tag and
PV

Display alternating
tag and Modbus
PVs

TG-PV-U

Tag, PV,
and Units

Display alternating
tag, Modbus PVs,
and units

OFF

Off

Display is turned
off during normal
operation

TG-PV-U

PV

PV

Display Modbus
PVs

TAG-PV

Tag and
PV

Display alternating
tag and Modbus
PVs

TG-PV-U

Tag, PV,
and Units

Display alternating
tag, Modbus PVs,
and units

OFF

Off

Display is turned
off during normal
operation

Note: Some top display selections may not appear if
no PV is assigned to display on the top display.

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PV Display Setup (PVSETUP)

The PV Display Setup menu is used to configure the
display options for each Modbus PV setup in the PV
Number Configuration (PV NUM) menu on page 24. For
each Modbus PV, this includes selecting the top or
bottom display, entering tag and unit, setting the Float
data type decimal location (for Float data types only),
setting the display decimal point location, and scaling
the Modbus PV to display in engineering units.

Note 1: Not applicable to feet and inches display models.

Note 2: The Float Decimal Point menu only appears if
the PV data type has been set to Float (Not applicable
to Ft & In model).

Modbus PV Display Format (FORMAT)

The PV Display Setup menu is used to configure the
display options for each Modbus PV.

Decimal Display Models

The PV may appear on the top display (TOPDSP) or
bottom display (BOTDSP). The PV may also be turned
off (OFF) and it will not display; though it may be used
in math functions, and the data will be polled if in
Modbus Master mode.

Feet and Inches Display Models

The PV may appear on the top feet and inches
display with 1/16 of an inch (FtIn16), 1/8 of an inch
(FtIn8), or appear on the 7-digit bottom display (DEC)
with no decimal points. The PV may also be turned off
(OFF) and it will not display; though it may be used in
math functions, and the data will be polled if in
Modbus Master mode.

Press Enter to access the Format menu and Up
button to scroll through choices. Press Enter to make
a selection and proceed to the next menu.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

Enter Modbus PV Tag (TAG)

Each Modbus PV may have a unique programmable
tag to identify the PV while the display is scanning. To
program the Modbus PV tag, select the Tag menu
and press Enter.

Program the custom tag as described in Setting
Alphanumeric Labels (LABEL) on page 20. When the
label has been programmed, press Enter to confirm
the label and leave the Tag parameter.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

Enter Modbus PV Units (UNITS)

Each Modbus PV may have a unique engineering unit
identifier to display while scanning. To program the
Modbus PV unit, select the Units menu and press Enter.

Program the custom unit as described in Setting
Alphanumeric Labels (LABEL) on page 20. When the
label has been programmed, press Enter to confirm
the label and leave the Units parameter.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

Set Float Data Type Decimal Point (FLOAT.DP)

This menu is only used if the PV selected was set to a
data type of Float in PV Number Configuration (PV
NUM) on page 24. To program the Modbus PV float
decimal point location, select the Float Decimal Point
menu and press Enter.

Set the decimal point location to correspond to the
decimal point location of the float data. Pressing the
Right arrow moves the decimal point one place to the
right (including no decimal point). Pressing the Up
arrow moves the decimal point one place to the left.
Press Enter to confirm the number of decimal; points
and continue programming.

Set Display Decimal Point (DISP.DP)

Select the display decimal point location for the
scaled Modbus PV value.

Decimal Display Models

Select the display decimal point location for the
scaled Modbus PV value.

To program the Modbus PV display decimal point
location, select the Display Decimal Point menu and
press Enter.

Pressing the Right arrow moves the decimal point
one place to the right (including no decimal point).
Pressing the Up arrow moves the decimal point one
place to the left. Press Enter to confirm the number of
decimal; points and continue programming.

Feet and Inches Display Models

On feet and inches display models, this value is fixed,
the top display PVs shows feet and inches and the
bottom display PVs shows no decimal location.

Note 2

Note 1

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Scale Modbus PV to Engineering Units (SCALE)

The Modbus PVs may be scaled to reflect different engineering units than the data read out of the Modbus slave
device register. To do this, use the Scale menu to select the type of scale desired.

Note 1: The bottom display of the feet and inches display models does not show decimal points. While the decimal
point may not appear, it is included on the factor programming steps.

For example: To enter a conversion factor of 2.54, select a factor decimal point with 2 decimal locations, and enter a
factor value of 254.

Note 2: MP-SCAL is only available when scaling PV1.

Temporary Display
Will display current value
on bottom display

Temporary Display
Will display current value
on bottom display

Temporary Display
Will display current value
on bottom display

Temporary Display
Will display current value
on bottom display

Temporary Display
Will display current value
on bottom display

Temporary Display
Will display current value
on bottom display

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Factor (FACTOR)

Factor scaling uses a conversion factor for scaling a
number of PV register counts to a single display
count. In other words, the factor acts as a multiplier to
change Modbus PV register data units into display
engineering units.

Factor Decimal Point (FACTR.DP)

Enter the number of decimal point locations necessary to
enter the conversion factor.

Conversion Factor Value (VALUE)

Enter the conversion factor; the multiplier value that is
applied to the Modbus PV register data to convert it to
the desired display engineering units.

For example: if the PV register data is a height in
centimeters, but a height in inches is desired on the
display, a factor of 0.393701 would be entered.

(Display Value) = (Modbus Register Value) * (Factor)
Example:

(386.08 cm) * (0.393701) = (152.00 in) = (12 ft 8 in)

Note: The bottom display of the feet and inches
display models does not show decimal points. While
the decimal point may not appear, it is included on the
factor programming steps.

For example: if the PV register data is 0 to 100 in a
flowmeter, but a flow rate desired on the display is 0
to 250 GPM, a factor of 2.5 would be entered. On feet
and inches display models, there is no lower display
decimal point. Therefore, a factor decimal point of 1
place is selected, and a conversion factor value of 25
is entered.

Linear (LINEAR)

Linear scaling is used to convert a linear scale of PV
to display value.

Input Values 1 and 2 (INP)

Enter the Modbus PV register data for scaling points
1 and 2.

Display Values 1 and 2 (DSP)

Enter the corresponding display values for input
points 1 and 2.

For example: If a PV register contains data in terms of
tank height in feet for a 100 feet tank, the display
value can be linearly scaled for an input of 0 feet
(Input 1) displaying 0 percent (Display 1), and an
input of 100 feet (Input 2) displaying as 100 percent
(Display 2).

Not available on Modbus PVs assigned to the feet
and inches display of feet and inches display models.

Multipoint Scaling (MP-SCAL)

This type of scaling is only available for PV1.
Multipoint Scaling is used when multiple linear scaling
points are required, such as round horizontal tanks or
conical storage silos. Up to 32 linearization points
may be entered, with linear scaling between each
point.

Not available on Modbus PV1 if assigned to the feet
and inches display of feet and inches display model.

Number of Points (NO PTS)

Enter number of linearization points. The default value
is 2 points. For linear inputs requiring only 2 scale
points, use Linear scaling.

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Math Channel Display Setup (MATH)

The Math Channel Display Setup menu is used to configure the display options for each of the four math channels,
CV1 to CV4. The Menu will only display the math channels that have been enabled. See Math Channel (CV1 to CV4)

Programming (MATH) on page 43 for details on programming the math functions.

Note 1:

FORMAT

must be set to either

TOPDSP

or

BOTDSP

for the

TAG, UNITS

, and

DISP.DP

menus to be visible.

If

FORMAT

is set to

OFF

, these menus are not visible.

Note 2: Display Decimal Point menu is not applicable to feet and inches display format.

Note 2

Note 1

Ft & In Display

Decimal Display

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Math Display Format (FORMAT)

The Math Display Format menu is used to configure
the display format for each math channel. The Math
Display Format must be set to display on either the
top or bottom display for the TAG, UNITS and DISP.DP
menus to appear.

Decimal Display Models

The math channel value may appear on the top
display (TOPDSP) or bottom display (BOTDSP). The
math channel value may also be turned off (OFF), and
will not display; though it may be used in other math
functions.

Feet and Inches Display Models

The math channel may appear on the top feet and
inches display with 1/16 of an inch (FtIn16), 1/8 of an
inch (FtIn8), or appear on the 7-digit bottom display
(DEC) with no decimal points. The math channel may
also be turned off (OFF), and will not display; though it
may be used in other math functions.

Press Enter to access the Format menu and Up
button to scroll through choices.

Press Enter to make a selection and proceed to the
next menu.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

Enter Math Channel Tag (TAG)

Each math channel may have a unique
programmable tag to identify the math channel while
the display is scanning. To program the tag, select the
Tag menu and press Enter.

Program the custom tag as described in Setting
Alphanumeric Labels (LABEL) on page 20. When the
label has been programmed, press Enter to confirm
the label and leave the Tag parameter. Press the
Menu button to back out of a menu or hold the Menu
button to exit at any time.

Enter Math Channel Units (UNITS)

Each math channel may have a unique engineering
unit identifier to display while scanning. To program
the units, select the Units menu and press Enter.

Program the custom unit as described in Setting
Alphanumeric Labels (LABEL) on page 20. When the
label has been programmed, press Enter to confirm
the label and leave the Units parameter.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

Set Display Decimal Point (DISP.DP)

Select the display decimal point location for the math
channel value. To program the math channel display
decimal point location, select the Display Decimal

Point menu and press Enter.

Decimal Display Models

Set the display decimal point location for the math
channel. Pressing the Right arrow moves the decimal
point one place to the right (including no decimal
point). Pressing the Up arrow moves the decimal
point one place to the left. Press Enter to confirm the
number of decimal points and continue programming.

Feet and Inches Display Models

Feet and inches display models do not have this
menu. On feet and inches display models, this value
is fixed, the top display PVs showing feet and inches
and the bottom display PVs showing no decimal
location.

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Tank Size Indicator (TANKSZ)

The Tank Size menu defines the 100% full level for
the 20-segment tank level indicator on feet and inches
display models. This menu is not present in decimal
display models. All PV values displayed on the top
line feet and inches display will use this tank level
indicator.

To set the maximum height of the tank level indicator,
enter the level for thank to display as full. Enter the
full value in feet.

See Setting Numeric Values on page 20 for more
information on entering the tank full level in feet.

Press Enter to confirm and save the tank level
indicator full value.

Tag Display Time (T-TAG)

If either display is set to toggle a custom tag as part of
the Top Display or Bottom Display programming the
scanner will prompt for a toggle time with this menu.

The custom tag for each variable will display before
each variable for a number of seconds set by this
parameter. The tag may be programmed to display for
1 to 49 seconds.

Press Enter to access the Tag Display Time menu.
Use the Up and Right buttons to enter the tag display
time. Press Enter to make a selection and proceed to
the next menu. See Setting Numeric Values on page
20 for more information.

Press the Menu button to exit without saving changes.

Units Display Time (T-UNITS)

If either display is set to toggle units as part of the Top
Display or Bottom Display programming the scanner

will prompt for a toggle time with this menu.
The unit for each variable will display before each

variable for a number of seconds set by this parameter.
The unit may be programmed to display for 1 to 49
seconds.

Press Enter to access the Units Display Time menu.
Use the Up and Right buttons to enter the units
display time. Press Enter to make a selection and
proceed to the next menu. See Setting Numeric
Values on page 20 for more information.

Press the Menu button to exit without saving changes.

Scan Time (T-SCAN)

The scan time defines how long a variable will be
shown on the display while automatically scanning.
After the scan time has elapsed, the next tag, unit,
and variable will be displayed.

The scan time may be programmed to cycle the
display to the next variable every 2 to 99 seconds.

Press Enter to access the Scan Time menu. Use the

Up and Right buttons to enter the scan time. Press
Enter to make a selection and proceed to the next

menu. See Setting Numeric Values on page 20 for
more information.

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Serial Communications Settings (COMM)

The Serial Communications menu is used to setup
serial communications parameters necessary for
communication via the RS-485 connection and
Modbus.

Press Enter to access the Serial Communications
Settings menu then press the Up to scroll through the
menu choices.

Press Enter to select a menu. Press Menu to back
out of a menu or hold Menu to exit at any time.

Modbus communications is performed with the 3-wire
(including Ground) RS-485 connector.

Refer to the ProtEX Scanner Modbus Register Tables
located at www.predig.com for additional Modbus
information.

Scanner Modbus ID (SCAN ID)

The Scanner Modbus ID menu sets the Modbus
address (ID) of the scanner. The scanner Modbus ID
may be programmed between 1 and 247. When using
more than one device in a multi-drop mode, each
device must be provided with its own unique address.

To program the Modbus ID, refer to Setting Numeric
Values on page 20.

Baud Rate (BAUD)

The baud rate may be set to 1,200; 2,400; 4,800;
9,600; 19,200; 38,400; 57,600; or 115,200 bps.

In the Baud Rate menu, use the Up button to scroll
through the menu choices.

Press Enter to make a selection and proceed to the
next menu.

Transmit Delay Time (TXDELAY)

The transmit delay may be set between 0 and 199 ms.
To program the transmit delay time, refer to Setting

Numeric Values on page 20.

Parity (PARTIY)

The parity can be set to even (EVEN), odd (ODD), or
none with 1 (NONE1) or 2 (NONE2) stop bits.

In the Baud Rate menu, use the Up button to scroll
through the menu choices.

Press Enter to make a selection and proceed to the
next menu.

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Advanced Menu

Display Functions & Messages

The scanner displays various functions and
messages during setup of advanced features. The
following table shows the Advanced Features menu
functions and messages in the order they appear in
the menu.

Display

Parameter

Action/Setting

ADVANCE

Advanced

Enter Advanced menu

OUTPUT

Output

Setup open collector
outputs Out 1 and Out 2

OUT 1

Output 1

Assign function of open
collector output 1

OFF

Off

Disable output

PULSE

Pulse

Set Out 1 or Out 2 for
pulse output mode

RATE

Rate

Refer to pulse input
manual for any reference
to Rate, Total, or Grand
Total.

TOTAL

Total

GrTOTAL

Grand Total

RETRAN

Retransmit

QUAD

Quadrature

Assign pulse output to
quadrature

TEST

Test

Assign pulse output to test
mode

PV

Process
Variable

Assign pulse output to a
PV or CV

SORUCE

Source

Set pulse output reference
variable

ALARM

Alarm

Assign Out 1 or Out 2 for
alarm output mode

PV NUM

Process
Variable
Number

Assign alarm output to a
PV or CV

PV 1

Process
Variable 1

Select Process Variable to
assign alarm to (1-16)

SET

Set Point

Set alarm set point

RESET

Reset Point

Set alarm reset point

ON

On

Set output to on state

OFF

Off

Set output to off state

TIMER

Timer

Set Out 1 or Out 2 for
timed pulse output mode

Start

Start

Activate timed pulse
output

PERIOD

Delay

Set the time of one period
(seconds)

TIME

On

Set the active low pulse
width time

OUT 2

Output 2

Assign function of open
collector output 2

A OUT

Analog Output

Enter Analog Output menu

Display

Parameter

Action/Setting

SOURCE

Source

Set analog output
reference variable

PV1

Process
Variable 1

Set PV as analog output
source, can select any
active PV (1-16)

DSPLY 1

Display 1

Output display 1 value

OUt 1

Output 1

Output 1 value

DSPLY 2

Display 2

Output display 2 value

OUt 2

Output 2

Output 2 value

SAVE?

Save

Save entered analog
parameters

CV1

Math
Channel 1

Set CV as analog output
source, can select any
active CV (1-4)

DISABLE

Disable

Turn off the analog output

MATH

Math

Enter Math menu

CV 1

Math
Channel 1

Program math channel
(Channel 1-4)

MULTI

Multiply

Set math to multiply

PAR1

Parameter 1

Enter math function
parameter 1

PAR2

Parameter 2

Enter math function
parameter 2

PAR3

Parameter 3

Enter math function
parameter 3

L2P1

Level 2
Parameter 1

Enter nested math function
level 2 parameter 1

L2P2

Level 2
Parameter 2

Enter nested math function
level 2 parameter 2

L2P3

Level 2
Parameter 3

Enter nested math function
level 2 parameter 3

DIVIDE

Divide

Set math function to divide

DIFABS

Absolute
Difference

Set math function to
absolute difference

WAVG

Weighted
Average

Set math function to
weighted average

DRAW

Draw

Set math function to draw

RATIO

Ratio

Set math function to ratio

CONCEN

Concentration

Set math function to
concentration

CONST

Constant

Set math function to a
constant value

NONE

None

Set math function to none

ABS

Absolute Value

Set math function to
absolute value

SQRT

Square Root

Set math function to
square root

SUM

Sum

Set math function to sum

DIF

Difference

Set math function to
difference

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GATE

Gate

Refer to pulse input
manual

FILTER

Filter

CUTOFF

Low-Flow
Cutoff

SCALCAL

Scale &
Calibrate

T RESET

Total Reset

PASSWRD

Password

Enter the Password menu

UNLOCKD

Unlocked

Program password to lock
scanner

LOCKED

Locked

Enter password to unlock
scanner

Pass

Password

Program password to lock
scanner parameters

UnLOC

Unlock

Password has been
unlocked

LOCD

Lock

Password has been locked

Pass T

Password
Total

Refer to pulse input
manual

Pass GT

Password
Grand Total

CUSTOM

Custom

Enter Custom menu

POS 1

Position 1

Set menu position 1 (1-8)

SYSTEM

System

Enter System menu

SETTIME

Set Time

Set real-time clock date
and time

YEAR

Year

Set the year

MONTH

Month

Set the month

01

January

Set month as January

02

February

Set month as February

03

March

Set month as March

04

April

Set month as April

05

May

Set month as May

06

June

Set month as June

07

July

Set month as July

08

August

Set month as August

09

September

Set month as September

10

October

Set month as October

11

November

Set month as November

12

December

Set month as December

DAY

Day

Set the day

TIME

Time

Set the hour and minute

DATALOG

Data Log

Enter Data Log menu

LOGTIME

Log Time

Set daily data log times

LOG 1

Log 1

Set first daily log time (1-4)

DISABLE

Disable

Disable log number

ENABLE

Enable

Enable log number

INTERVL

Interval

Set interval log time

FULSTOP

Stop When
Full

Data logging will stop
when the log is full

CONT

Continue

Data logging will continue
when the log is full,
deleting old data

START

Start

Begin interval logging

LOGVIEW

Log View

View data log

LOGVIEW
ALL

All Log View

View all data log points

ERASE

All Erase

Erase all logs

ERASE
ALL?

Erase?

Confirm to erase all logs

BAKLITE

Backlight

Enable or disable backlight

ENABLE

Disable

Disable backlight

DISABLE

Enable

Enable backlight

AO CAL

Analog Output
Calibration

Enter Analog Output
Calibration menu

BACKUP

Backup

Enter Backup menu

SAVE?

Save?

Save current parameters
to backup restore

LOAD?

Load?

Load parameters from
backup restore

DEFAULT

Default

Restore factory default
parameter settings

DFALTS?

Reset Defaults

Confirm factory reset

INFO

Info

Enter Info menu

SOFT

Software

Display software ID
number

VER

Version

Display software version
number

MODEL

Model

Display model number

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Advanced Menu Programming (ADVANCE)

To simplify the setup process, functions not needed for
most applications are located in the Advanced menu.
Access the Advanced menu features by pressing Enter
at the Advance menu in the Main Menu defined on
page 21.

Press the Enter button to access any menu or press
the Up arrow button to scroll through choices.

Press the Menu button to back out of a menu or hold
the Menu button to exit at any time.

The Advanced menu is used to select:

• Open Collector Output Configuration
(OUTPUT)

• Analog Output Configuration (A OUT)

• Math channel functions (MATH)

• Set Passwords (PASSWRD)

• Reconfigure the Main Menu Structure

(CUSTOM)

• Enter the System Menu for Scanner
Operation and Data Logging (SYSTEM)

Note 1: Analog Output (

A OUT

) menu displayed only

for scanners with the analog output option.
Note 2: Refer to pulse input manual

Note 1

Note 2

Note 2

Note 2

Note 2

Note 2

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Open Collector Outputs (OUTPUT)

The scanner is equipped with two NPN open collector
outputs that may be set up for pulse outputs, alarms,
timed pulses, or turned off.

Pulse outputs can be based on a Modbus PV value,
or math channel value. Both outputs may be used to
generate a quadrature output based on any pulse
menu output type. An output test mode is also
selectable to generate pulses at a constant
programmable frequency.

Alarms are available based on a Modbus PV or math
channel. The alarm status will show on the display
even if the output is not wired. The outputs may also
be forced on or off.

A timed pulse output generates constant pulses at a
specified frequency and on time.

The output may be disabled by selecting Off.

Output 1 and 2 Setup (OUT 1, OUT 2)

The function of open collector output 1 and 2 is
configured using the Off (OFF), Pulse (PULSE), Alarm
(ALARM), and Timer (TIMER) menus detailed below.

In the Output 1 and 2 menus, use the Up button to
scroll through the menu choices.

Press Enter to make a selection and proceed to the
next menu.

See Setting Numeric Values on page 20 for more
information on programming numeric count, set, and
reset value.

Pulse Output (PUlse)

Pulse outputs may be assigned to Modbus PV (PV),
math channel (CV), quadrature (QUAD), or test (TEST).

Note 1:

SOURCE

menu only applicable to PV option.

Note 2: Refer to pulse input manual

Note 1

Note 2

Note 2

Note 2

Note 2

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Quadrature Pulse Output (QUAD)

The pulse output set to quadrature will duplicate the
other open collector output, but lag by ¼ duty cycle
(90 degrees out of phase). For example, Out 1 will
follow Out 2, if Out 1 is set to QUAD. Only one output
should be set to QUAD. If both outputs are set to QUAD,
both outputs will be disabled. The other output should
be programmed as desired for the quadrature output
function, and must be a pulse (PUlse) output
selection.

Test Pulse Output (test)

The test output setting programs the output to
generate pulses at a programmed constant
frequency. Set the frequency decimal point location in
the DECPT menu, and then enter the desired output
frequency in Hz in the PULSE menu.

Modbus PV or Math Pulse Output (PV)

The pulse output may be based on an enabled
Modbus PV or math channels CV1 to CV4. The pulse
output frequency in hertz (Hz) is calculated as the
value of the selected PV or CV divided by the
programmable count (or divisor).

𝑂𝑢𝑡𝑝𝑢𝑡 𝐹𝑟𝑒𝑞𝑢𝑒𝑛𝑐𝑦 (𝐻𝑧)=

(

𝑃𝑉 𝑜𝑟 𝐶𝑉 𝑉𝑎𝑙𝑢𝑒

)

𝐶𝑜𝑢𝑛𝑡

The frequency of the pulse output will update as the
PV or CV value is changed.
For example, if the output is set to reference PV 2,
and PV 2 is reading 1540.5, with a count or 10, the
pulse output frequency will be 154.05 Hz.

Alarm Output (ALARM)

Alarm outputs may be assigned to Modbus PV or
math channel (PV NUM), always on (ON) or always off
(OFF).

Note 1: Refer to pulse input manual

Modbus PV or Math Alarm (PV NUM)

Program a PV (PV1-16) or math channel (CV1-4) to
trigger an alarm. Select the source PV or CV for the
alarm and enter the display value set and reset
points. The alarm deadband is determined by the
difference between set and reset points. Minimum
deadband is one display count. If set and reset points
are programmed the same, output will reset one count
below set point.

Note 1

Note 1

Note 1

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Force On State (ON)

This alarm mode forces the output to be active, or on.
This mode is primarily used to test alarm systems.

Force Off State (OFF)

This alarm mode forces the output to be inactive, or
off. This mode is primarily used to test alarm systems.

Timer Output (TIMER)

The timer output produces a constant pulse width at a
constant frequency. Program the Period (PERIOD)
from 0.1 to 999999.9 seconds (time from the start of
one pulse to the start of the next pulse).

Program the On Time (TIME) for the active low pulse
from .01 to 99999.99 seconds (pulse width). The on
time must be less than the delay time (Period).

Select Start (START) to begin outputting the constant
timed pulse.

Select Stop (STOP) to end outputting the constant
timed pulse.

Scaling the 4-20 mA Analog Output (Aout)

The Analog Output menu is used to program the
4-20 mA output based on display values. This menu
is not present on models without a 4-20 mA output
option.

The 4-20 mA analog output (if equipped) can be
scaled to provide a 4-20 mA signal for any display
range selected for either Modbus PV 1 to 16 or math
channel CV 1 to 4.The output may be disabled
(DISABLE), and it will only output the minimum signal.

No equipment is needed to scale the analog output;
simply program two display values and corresponding
mA output signals.

Selecting the Analog Output Source

In the Analog Output (A OUT) menu, press the Enter
button. In the Source (SOURCE) menu, press the Up
button to scroll through the menu choices.

Press Enter to make a selection and proceed to the
next menu.

Note 1: Refer to pulse input manual

Note 1

Note 1

Note 1

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Enter Display and Output Values

To scale the analog output, enter display value 1 and
a corresponding analog output value for this display,
and enter display value 2 and a corresponding analog
output value for this display value. This will provide a
linearly scaled analog output.

On decimal display models, enter the output value in
mA. On feet and inches display models, enter the
output value in µA.

The following diagram details setting the analog
output when the source is configured to display on the
top display of a decimal display model.

The following diagram details setting the analog
output when the source is configured to display on the
top display of a feet and inches display model.

The following diagram details setting the analog
output when the source is configured to display on the
bottom display.

See Setting Numeric Values on page 20 for more
information on programming the display and output
values.

Note 1: On decimal display models, enter the output
value in mA. On feet and inches display models, enter
the output value in µA.

Note 2:The hundreds digit on the feet display does
not display 0 as a seven-segment 0; instead 0 is
represented with three horizontal bars as shown.

• Please note that when power is removed from the
scanner, the analog output will drop below 1 mA.

• Consider this effect when designing any system
using the 4-20 mA output.

Math Channel (CV1 to CV4) Programming (MATH)

The scanner includes four math channels, CV1 to
CV4. Each math channel is constructed by selecting a
math function and the desired parameters.

Note 1: The current math function selection will
display as this menu item.

Note 2: Parameter 1, 2, and 3 will appear in the menu
structure based on their use in the selected math
function. See the table below for information on what
parameters are necessary for each math function. If
Constant is selected as the math function, the value
will be immediately entered.

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The available math functions are detailed below.

Math
Selection

Function

Equation

SUM

Addition

PAR1 + PAR2

DIF

Difference

PAR1 - PAR2

MULTI

Multiplication

PAR1 * PAR2

DIVIDE

Division

PAR1 / PAR2

DIFABS

Absolute diff.

Abs(PAR1 - PAR2)

WAVG

Weighted
avg.

((PAR1 –
PAR2)*PAR3) +PAR2

DRAW

Draw

((PAR1 / PAR2) –

1) * PAR3

RATIO

Ratio

(PAR1 / PAR2) * PAR3

CONCEN

Concentration

PAR1 / (PAR1 +
PAR2) * PAR3

CONST

Constant

Constant value of

0.0001 to 99999

NONE

None

Disable

ABS

Absolute
Value

Abs(PAR1)

SQRT

Square Root

√(PAR1)

The available parameters for PAR1, PAR2, and PAR3
shown above are detailed below.

PAR
Selection

Parameter

Description

PV 1

Modbus PV1

The scaled PV1 value;
PV2 to PV16 also
selectable

CV 1

Math Channel
CV1

The math channel CV1
value; CV2 to CV4
also selectable

ABS

Nested
Absolute
Value*

Abs(L2 PAR1)

SQRT

Nested
Square Root*

√(L2 PAR1)

SUM

Nested
Addition*

L2P1 + L2P2

DIF

Nested
Difference*

L2P1 - L2P2

MULTI

Nested
Multiplication*

L2P1 * L2P2

DIVIDE

Nested
Division*

L2P1 / L2P2

DIFABS

Nested
Absolute diff.*

Abs(L2P1 - L2 PAR2)

WAVG

Nested
Weighted
avg.*

((L2P1 – L2P2)* L2P3)
+ L2P2

DRAW

Nested Draw*

((L2P1 / L2P2) – 1) *
L2P3

RATIO

Nested Ratio*

(L2P1 / L2P2) * L2P3

CONCEN

Nested
Concentration*

L2P1 / (L2P1 + L2P2)
* L2P3

CONST

Constant

Constant value of

0.0001 to 99999

NONE

None

No parameter.

*Selecting this math function as a parameter will enter
into the setup for a Nested Math Function. These
parameters are not available for level 2 parameters
used when setting up the nested math function.

Nested Math Functions

To create more complicated math functions, the first
level parameters allow a math function to be selected
as the parameter. In this case, a second level of
parameters is selected for the nested math function.
These level 2 parameters are level 2 parameter 1,
L2P1 (L2P1), level 2 parameter 2, L2P2 (L2P2), level
2 parameter 3, and L2P3 (L2P3). Level 2 parameters
are selected similarly to other math parameters;
however additional nested math functions are
unavailable for selection.

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Entering a Constant Value

To enter a constant value, press Enter to select
Constant (CONST). Value (VALUE) will display. Press
Enter to confirm and enter a constant value. V.DP will
display. Use the Up and Right arrows to select the
number of decimal points used in the constant value.
Press Enter to select the number of decimal points
selected. Value will display. Set the constant value.
See Setting Numeric Values on page 20 for more
information.

No Parameter (NONE)

Selecting a parameter of None will disable the math
function. Any math function with a parameter of None
will display None (NONE) on the display as the value of
the math function.

Setting Up Passwords (PASSWRD)

The Password menu is used to program a five-digit
password to prevent unauthorized changes to the
programmed parameter settings.

The lock symbol is displayed on decimal display
models to indicate that settings are password
protected.

Record all passwords for future reference. If
appropriate, it may be recorded in the space provided.

For instructions programming numeric values see
Setting Numeric Values on page 20 for more
information.

Model

Password

Serial Number:

Setting Lockout
Password (PASS):

____ ____ ____ ____ ____

Locking Scanner Setup Parameters (PASS)

Enter the Password menu by pressing Enter. Select
Password (Pass) by pressing Enter. Program a five-

digit password. The scanner will return to Run Mode
after locking any of the passwords.

Making Changes to a Password Protected Scanner

If the scanner is password protected, the scanner will
display the message LOCKED when the Menu button is
pressed. Press the Enter button while the message is
being displayed and input the correct password
followed by the Enter button to gain access to the
menu. After exiting the programming mode, the
scanner returns to its password protected condition.

Disabling Password Protection

To disable the password protection, access the
Password menu, select the type of password to be
disabled, and enter the programmed password. That
password is now disabled until a new password is
entered.

• Did you forget the passwords? The password
may be disabled by entering a master password.
If you are authorized to make changes, enter the
master settings lockout (PASS) password 50865,
to unlock the scanner.

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Custom (CUSTOM)

The Custom menu is used to modify the initial
programming menus that appear in the Main Menu
when the Menu button is pressed in Run Mode.

• Changing the default menu setup with the
Custom menu feature may change the setup and
operation procedures described in this manual.
Only operators familiar with the programming and
operation of this unit should use this feature.

Eight menu positions are available. Menu positions
6 and 7 are factory programmed for Setup and
Advanced.

After pressing Enter at the Custom menu, the display
will flash Position (POS 1) and then display the
parameter to appear in position 1 of the main menu.

To add a menu or parameter to the menu structure, or
change the default menus, press Enter at the desired
position (POS) to be edited, and use the Up or Right
arrows to select the desired menu item for that
position. Press Enter to save the setting. See the
Custom Menu Parameters chart for a complete list of
available menu selections for each position.

Custom Menu Parameters

Display

Parameter/Menu

Action

NONE

None

Set no menu
position display

UNITS

Units

Set to show Units
menu

DECIMAL

Decimal

Set to show
Decimal menu

DISPLAY

Display

Set to show
Display menu

A OUT

Analog out

Set to show Analog
Output menu

PASS

Password

Program password
to lock scanner
parameters

OUTPUT

Output

Set to show Output
menu

OUT 1

Out 1

Assign function of
pulse output 1

OUT 2

Out 2

Assign function of
pulse output 2

DATALOG

Data Log

Enter Data Log
menu

LOGTIME

Log Time

Set daily data log
times

INTERVL

Interval

Set interval log
times

LOGVIEW

Log View

Enter Log View
menu

PASSWRD

Password

Set to show
Password menu

SETUP

Setup

Set to show Setup
menu

ADVANCE

Advance

Set to show
Advanced menu

SYSTEM

System

Set to show
System menu

MODE

Mode

Set to show Mode
menu

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System (SYSTEM)

The system function is used to set the real time
clock, set daily data log times, enable/disable the
backlight, access analog output controls used in
troubleshooting, store, restore, and backup restore
feature, enable/disable the battery power alert
symbol on the display, and review basic system
identification information.

Set Real Time Clock (SETTIME)

The real time clock is used to trigger data log events,
and is recorded at every logged data point. The Set
Time menu displays the date and time.

Figure 10. Real Time Clock Display Example –

Decimal Model

Figure 11. Real Time Clock Display Example –

Feet & Inches Model

The above display examples show the date to be
June 27, 2013; at 14 hours, 32 minutes, and
36 seconds.

The year, month, day, hour, and minute may all be set
by the user. The real time clock will need to be reset if
external power and battery power are lost.

To program the time, select the time or date
component to be programmed, and press Enter. To
enter the time or date as a numeric value, see Setting
Numeric Values on page 20 for more information.

Changing the time (hours and minutes) will reset the
second clock to 0.

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Data Log Setup (DATALOG)

The Data Log menu is used to setup and enable the
data log functions. The scanner may contain up to
511 records, each containing the date, time, and log
number. Each record may hold the first eight enabled
Modbus PVs and all enabled math channel CVs.

The data log can hold 511 records of the first eight
enabled Modbus PVs and math channel CVs.

The frequency of these records depends on the data
log settings.

For example: If PV 1, 2, 3, and 4 are enabled, and
CV 1 and 2 are enabled, the data log may record 511
logs containing PV 1, 2, 3, and 4, as well as CV 1 and
CV 2. The data log will record these values even if
CV2 is the only value set to display.

Log Time and Log Interval

There are two ways to configure the time when a data
log record is recorded. The Log Time feature allows
up to 4 data log events time to be entered for each
day. The Log Interval feature allows a data log
recording event at the selected time interval. At each
data log event, all appropriate data records will be
recorded.

Only the Log Time or Log Interval may be active at a
time. While one type of data logging is enabled, the
other menu is inaccessible.

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Log Time Setup (LOGTIME)

The Log Time menu contains four log events (LOG 1
to LOG 4). Each log time is configured independently.
For each daily log time desired, enable a log, and set
the log time for the hours and minutes the log is to be
recorded. The time is set in real-time hours and
minutes, based on the real time clock setup.

The Log Time feature will roll-over, deleting the oldest
data logs (in blocks of 8) when the log is full and new
logs must be recorded. This makes it the most useful
for long-term data logging.

Interval Setup (INTERVL)

The Interval menu sets the time interval for data
logging. Every time interval, one data log event will be
recorded. To enable interval data logging, enable the
feature, and set the interval time for the hours and
minutes between each log.

If set to FULSTOP, the Log Interval feature will not
delete old data, and data logging will stop when the
log is full. This makes it the most useful for short
periods and logging specific functions.

If set to CONT, the Log Interval feature will delete the
old data when full and continue logging data. The Log
Interval feature will roll-over, deleting the oldest data
logs (in blocks of 8) when the log is full and new logs
must be recorded. This makes it the most useful for
long-term data logging.

View Data Log (LOGVIEW)

The Log View menu allows on-screen browsing of the
data log event records stored in the scanner. Data
points may be navigated by viewing the log number,
date and time, first eight enabled PVs and four CVs. A
known log may be jumped to immediately, avoiding a
lengthy search for data. All logs may be deleted with
the ERASE command, requiring confirmation.

Once the log records are displayed, use the Enter
key to display variable within the same log and move
to the next log. Use the Up and Right arrows to move
to the next or previous log number.

Note 1: All enabled PVs and CVs will display in order,
the Tag for each PV and CV will flash before
displaying the value.

Note 2: All tags, values, and units will appear on the
lower display with exception of feet and inches
formatted values on the feet and inches display
models. These parameters will automatically alternate
on the display.

Backlight (BAKLITE)

The Backlight menu is used to enable or disable the
backlight. After pressing Enter to access the
Backlight menu, press the Up arrow to Enable
(ENABLE) or Disable (DISABLE) for the backlight.

Analog Output Calibration (AO CAL)

This feature is only used at the factory. It is not
recommended to access this menu without instruction
from technical support.

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Backup & Restore (BACKUP)

The scanner saves all parameter settings, and no
reprogramming is necessary when power is lost and
restored to the scanner.

These features are used to save and restore
programmed settings. Programming can be restored
to a known saved good configuration, or to factory
defaults. This is useful to restore scanners whose
programming has been altered in unknown ways, or
to quickly restore known good settings if mistakes are
made during reprogramming.

The Save feature (SAVE?) saves all current parameter
settings into the memory of the backup restore. The
backup restore feature is loaded with factory default
settings until a new configuration is saved.

The Load feature (LOAD?) restores all parameters to
the programmed values stored in backup restore
memory. The Load feature will not affect the current
password settings.

• Once scanner parameters have been saved to
memory by the backup restore feature there is
no recovering the previously saved settings.

• Once parameters have been loaded into the
scanner from the backup restore feature there
is no recovering the previously programmed
settings.

The Default feature (DEFAULT) restores all parameters
to the factory default values. Factory default reset
does not change the saved backup restore settings,
or override passwords.

In the Backup menu, use the Up arrow key to select
the desired menu. Press Enter to execute the save,
load, or restore defaults command. To restore the
scanner to factory defaults, press Enter again to
confirm the request when Defaults? (DEFLTS?) is

blinking.

Information (INFO)

The Information menu is part of the System features
menu. It shows software identification number,
version number, and extended model number. To
view this information:

Go to the Information menu (INFO) and press Enter
button.

Continue pressing Enter to scroll through the
displays.

Following the information display, the scanner will exit
the Advanced features menu and return to run mode.

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Operation

Front Panel Buttons Operation

Symbol

Description

Hold the Menu SafeTouch button
when in power save mode (display

will show ) to awaken SafeTouch
buttons.

Press the Menu button to enter
Programming Mode.

Press the Menu button during
Programming Mode to return to the
previous menu selections.

Hold the Menu button for 1.5
seconds at any time to exit
Programming Mode and return to
Run mode.

Press and hold the Menu button for
3 seconds to access the Advanced
features menu.

Press Previous to manually display
the previous PV or input display.

Press the Right arrow button in
programming mode to move to the
next digit or decimal position.

Press the Right arrow button in
programming mode to go backward
through most selection menus.

Press Next to manually display the
next PV or input display.

Press the Up arrow button in
programming mode to scroll forward
through the menus, decimal point, or
to increment the value of a digit

Press Scan to pause automatic
scanning.

Press Scan to resume automatic
scanning when paused.

Press the Enter button in
programming mode to access a
menu or to accept a setting.

Note: The following SafeTouch button information is
reprinted from SafeTouch Button Operation on page 17.

SafeTouch Button Operation

To actuate a button, press and remove one finger to
the glass directly over the marked button area.
Remove finger to at least 4 inches away from the
glass in between button activations. SafeTouch and
mechanical buttons may be held to cycle through
menus or digits in place of repeatedly pushing a
button.

SafeTouch Power Save Mode

(Symbol shown on -2 decimal models only)

SafeTouch buttons enter a power saving mode after
three minutes of inactivity. This mode is indicated by a

power symbol ( ) appearing in the lower right of the
display. Only the MENU button is monitored in this
mode. To activate the SafeTouch buttons, press and
hold the menu button for up to five seconds. The display
will read AWAKE, and the Safe Touch buttons will be fully
enabled.

SafeTouch Disabled Mode

When the cover is removed, the four mechanical
buttons located next to the sensors may be used. The
sensors are disabled when a mechanical button is
pressed and will automatically be re-enabled after
60 seconds of inactivity. The SafeTouch power symbol (

) will blink in the lower right of the display if the
buttons are disabled due to a mechanical pushbutton
being pressed.

SafeTouch Button Equalize Delay

The SafeTouch buttons are designed to constantly
recalibrate for ambient conditions. When the cover
position is changed, the cover is removed, or an object
is removed that was placed over the front window, it
may take a moment for the SafeTouch buttons to
recalibrate to the change in conditions.

Allow up to 2 minutes for the SafeTouch buttons to
recalibrate to new conditions in these cases where
the cover position was changed, or the front
window is being unblocked.

• SafeTouch will not work if two or more buttons are
detected as being press ed si multan eously. Be care ful
to avoid triggering multiple buttons or reaching across
one button locatio n to press anoth er.

SafeTouch Button Tips and Troubleshooting

The SafeTouch Buttons are designed to filter normal
levels of ambient interference and to protect against
false triggering, however it is recommended that the
Safe Touch Buttons be turned off (slide THRU-GLASS
BUTTONS switch to OFF) if there is an infrared
interference source in line-of-sight to the display or if
the buttons are not needed.

SafeTouch Button Tips:

• To the extent possible, install the display

facing away from sunlight, windows,
reflective objects, and any sources of
infrared interference.

• Keep the glass window clean.

• Tighten the cover securely.

• Use a password to prevent tampering.

• If the cover has not been installed and

secured tightly, it may take a moment for the
SafeTouch buttons to properly self-calibrate
when the cover is tightened.

• After all connections have been completed

and verified, connect the ribbon cable to the
display module, fasten the display module to
the base, install enclosure cover, and then
apply power.

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Pause/Start Automatic Scanning

Automatic scanning will cycle through the enabled
Modbus PVs and math channel CVs. The time each
variable will be displayed is programmed in the Scan
Time (T-SCAN) menu on page 35.

To pause scanning on the displayed variable, press
the Scan button.

To start scanning again, press the Scan button.

Manual Scanning

The enabled Modbus PVs and math channel CVs can
be manually cycled onto the display using the Next
and Previous buttons.

The Next button will display the next enabled display
variable, proceeding in the order of Modbus PVs and
math channel CVs.

The Previous button will display the displayed
variable shown prior to the one being displayed,
cycling through display variable in the reverse order.

Reset Scanner to Factory Defaults

Reset to factory defaults will restore most scanner
parameters to their factory default setting.

When the parameters have been changed in a way

that is difficult to determine what’s happening, it might

be better to start the setup process from the factory
defaults.

Factory default reset does not change the saved
backup restore settings or override passwords.

Instructions to load factory defaults can be found in
the Backup & Restore (BACKUP) menu on page 50.

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53

Factory Defaults & User Settings

The following table shows the factory setting for most of the programmable parameters on the scanner. Next to the
factory setting, the user may record the new setting for the particular application.

Model: _______________________ S/N: _______________________ Date: ____________

Parameter

Display1

Default Setting

User Setting & Notes

Mode

MODE

Master

Modbus PV1

PV 1

Enable

Slave ID

SLAVEID

1 Function Code

FUNCODE

Function 03

Register Number

REG NUM

40001

Data Type

DATATYP

Float

Byte

BYTE

1234 Modbus PV2

PV 2

Enable Slave ID

SLAVEID

2 Function Code

FUNCODE

Function 03

Register Number

REG NUM

40001

Data Type

DATATYP

Float Byte

BYTE

1234 Modbus PV3

PV 3

Enable Slave ID

SLAVEID

3

Function Code

FUNCODE

Function 03

Register Number

REG NUM

40001 Data Type

DATATYP

Float Byte

BYTE

1234 Modbus PV4

PV 4

Enable

Slave ID

SLAVEID

4

Function Code

FUNCODE

Function 03

Register Number

REG NUM

40001 Data Type

DATATYP

Float

Byte

BYTE

1234

Modbus PV5-16

PV 5-16

Disable

Poll Time

T POLL

2.0 seconds

Modbus Timeout

TIMEOUT

0.2 seconds

Retries to Error

RETRIES

3

Setup

SeTUP

Display

DISPLAY

Top Display
(Decimal Display Models Only)

TOPDSP

PV

Bottom Display

BOTDSP

Tag

PV Setup

PVSETUP

PV 1

PV 1

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Parameter

Display1

Default Setting

User Setting & Notes

Format
(Decimal Display Models)

FORMAT

Top Display

Format
(Feet & Inches Display Models)

FORMAT

Ft-In-16

Tag

TAG

PV 1

Units

UNITS

FEET

Display Decimal Point
(Decimal Display Models Only)

DISP.DP

1

Float Decimal Point
(Decimal Display Models Only)

FLOAT.DP

1

Scale

SCALE

Factor

Factor Decimal Point

F.DP 3

Factor Value

VALUE

1.000 PV 2

PV 2

Format
(Decimal Display Models)

FORMAT

Top Display

Format
(Feet & Inches Display Models)

FORMAT

Ft-In-16

Tag

TAG

PV 2 Units

UNITS

FEET

Float Decimal Point
(Decimal Display Models Only)

FLOAT.DP

1

Display Decimal Point
(Decimal Display Models Only)

DISP.DP

1

Scale

SCALE

Factor

Factor Decimal Point

F.DP 3

Factor Value

VALUE

1.000 PV 3

PV 3

Format
(Decimal Display Models)

FORMAT

Top Display

Format
(Feet & Inches Display Models)

FORMAT

Ft-In-16

Tag

TAG

PV 3

Units

UNITS

FEET

Float Decimal Point
(Decimal Display Models Only)

FLOAT.DP

1

Display Decimal Point
(Decimal Display Models Only)

DISP.DP

1

Scale

SCALE

Factor

Factor Decimal Point

F.DP 3

Factor Value

VALUE

1.000

PV 4

PV 4

Format
(Decimal Display Models)

FORMAT

Top Display

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Parameter

Display1

Default Setting

User Setting & Notes

Format
(Feet & Inches Display Models)

FORMAT

Ft-In-16

Tag

TAG

PV 4 Units

UNITS

FEET

Float Decimal Point
(Decimal Display Models Only)

FLOAT.DP

1

Display Decimal Point
(Decimal Display Models Only)

DISP.DP

1

Scale

SCALE

Factor Factor Decimal Point

F.DP 3

Factor Value

VALUE

1.000

Math Channel Setup

MATH

CV 1

CV 1

Format

FORMAT

Off CV 2

CV 2

Format

FORMAT

Off

CV 3

CV 3

Format

FORMAT

Off CV 4

CV 4

Format

FORMAT

Off

Tag Display Time

T-TAG

2 seconds

Units Display Time

T-UNITS

2 seconds

Scan Time

T-SCAN

2 seconds

Pulse Input Setup

PULSE.IN

Disabled

Communications

COMM

Scanner Modbus ID

SCAN ID

240

Baud Rate

BAUD

9600 bps

Transmit Delay

TXDELAY

50 ms

Parity

PARITY

Even

Advanced Features

ADVANCE

Open Collector Output

OUTPUT

Output 1

OUT 1

Off

Output 2

OUT 2

Off Analog Output

AOUT

Source

SOURCE

Disable

Math Functions

MATH

Channel 1

CV 1

None Channel 2

CV 2

None

Channel 3

CV 3

None

Channel 4

CV 4

None

Password

PASSWRD

Parameter Lock Password

PASS

00000 (unlocked)

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Parameter

Display1

Default Setting

User Setting & Notes

Additional Parameters & Notes

1. Feet and Inches display models do not include lower display decimal points.

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Application Examples

The following applications show how the scanner can be configured for common applications.

Example 1: Master Polling Multivariable Level Transmitters

In this application we have a system consisting of four MTS LP-Series multivariable tank level gauges connected to a
PD6830-AX0-I-2 displaying product level, interface level, and average temperature. The PD6830X is setup for Master
mode, and it is polling the Modbus transmitters.

Note: As a tank level indicator displaying in units of feet, a PD6830-AX0-I-L could also be considered for this
application. This would display feet and inches in the upper display and includes a tank level indicator.

Example 1 Level Transmitter Setup, Register Numbers, & Process Variables

Serial Communications
Parameters

Tank 1
Transmitter

Tank 2
Transmitter

Tank 3
Transmitter

Tank 4
Transmitter

Address (Slave ID)

001

002

003

004

Baud Rate

4800 bps

4800 bps

4800 bps

4800 bps

Transmit Delay

50 ms

50 ms

50 ms

50 ms

Parity

None 1

None 1

None 1

None 1

Fixed Serial Data
Parameters

MTS LP-Series Transmitter Data

Level Register

30001, 30002

Interface Register

30003, 30004

Ave Temp Register

30017, 30018

Data Type

Long Integer (2 registers), Binary, Signed

Byte Order

1234 (big-endian: most significant digits register first)

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The following table shows the PD6830X setup to work with the MTS LP-Series gauges.

Parameter

PD6830X

Description/Comment

Display

Mode

Master

PV1

Enable

PV1 Slave ID

1 Function Code

04

Register PV1

30001

Tank 1 Product Level

Data Type

Long integer Binary, Signed

Byte Order

1234

PV2

Enable

PV2 Slave ID

1

Function Code

04

Register PV2

30003

Tank 1 Interface

Data Type

Long integer Binary, Signed

Byte Order

1234 PV3

Enable

PV3 Slave ID

1

Function Code

04

Register PV3

30017

Tank 1 Average Temperature

Data Type

Long integer Binary, Signed

Byte Order

1234

PV4

Enable

PV4 Slave ID

2

Function Code

04

Register PV4

30001

Tank 2 Product Level

Data Type

Long integer Binary, Signed

Byte Order

1234

PV5

Enable

PV5 Slave ID

2

Function Code

04

Register PV5

30003

Tank 2 Interface

Data Type

Long integer Binary, Signed

Byte Order

1234

PV6

Enable

PV6 Slave ID

2 Function Code

04

Register PV6

30017

Tank 2 Average Temperature

Data Type

Long integer Binary, Signed

Byte Order

1234

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Parameter

PD6830X

Description/Comment

Display

PV7

Enable

PV7 Slave ID

3 Function Code

04

Register PV7

30001

Tank 3 Product Level

Data Type

Long integer Binary, Signed

Byte Order

1234

PV8

Enable

PV8 Slave ID

3

Function Code

04

Register PV8

30003

Tank 3 Interface

Data Type

Long integer Binary, Signed

Byte Order

1234

PV9

Enable

PV9 Slave ID

3

Function Code

04

Register PV9

30017

Tank 3 Average Temperature

Data Type

Long integer Binary, Signed

Byte Order

1234 PV10

Enable

PV10 Slave ID

4

Function Code

04

Register PV10

30001

Tank 4 Product Level

Data Type

Long integer Binary, Signed

Byte Order

1234

PV11

Enable

PV11 Slave ID

4

Function Code

04

Register PV11

30003

Tank 4 Interface

Data Type

Long integer Binary, Signed

Byte Order

1234

PV12

Enable

PV12 Slave ID

4

Function Code

04 Register PV12

30017

Tank 4 Average Temperature

Data Type

Long integer Binary, Signed

Byte Order

1234

Poll Time

5.0 seconds

Timeout

0.3 seconds

Retries

3

Default Value

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Parameter

PD6830X

Description/Comment

Serial Communications

Scanner ID

246

Must be Unique on the Network

Baud

4800 bps

Must Match All Network Devices

Transmit Time Delay

50 ms

Parity

None 1

Must Match All Network Devices

Setup

Display

Top Display

PV

Show Only PVs

Bottom Display

Tag & Units

Show Tag and Units for Each PV

PV Setup

PV 1 Identical for PV1, 4, 7, and 10

Format

Top Display

Tag

T1 LVL

Indicates Tank 1 Level

Units

FEET

Display Decimal Point

2

Scale

Scaling for Level

Input 1

00000

Display 1

0.00

Input 2

12000

x1000 inch

Display 2

10.00

Feet

PV 2 Identical for PV2, 5, 8, and 11

Format

Top Display

Tag

T1 INT

Indicates Tank 1 Interface Registers

Units

FEET

Display Decimal Point

2

Scale

Scaling for Interface Registers

Input 1

00000

Display 1

0.00

Input 2

12000

x1000 inch

Display 2

10.00

Feet

PV 3 Identical for PV3, 6, 9, and 12

Format

Top Display

Tag

T1TEMP

T1 Indicates Tank 1 Average Temperature

Units

°F

Display Decimal Point

1

Scale

Scaling for Temperature Registers

Input 1

00000

Display 1

0.0

Input 2

10000

x10,000 deg F

Display 2

10.0

Deg F

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Example 2: Snooper Displaying Flow Rate from Modbus Flow Meters

In this application we have a system consisting of two Modbus enabled flowmeters connected to a SCADA system
operated out of a control room. A Modbus PLC polls the data out of the flowmeters. A PD6830-AX0-I-2 has been
added to the system as a Modbus Snooper, to provide the operators an easy to read field display near the flow lines.

The scanner displays one flow rate on the top display, and one on the bottom display. Each has an alternating tag
and units for clear identification.

Example 2 Flow Meter & PLC Setup, Register Numbers, & Process Variables

Serial Communications
Parameters

Flow Transmitter 1

Flow Transmitter 2

Control Room PLC

Address (Slave ID)

100

200

N/A

Baud Rate

4800 bps

4800 bps

4800 bps

Transmit Delay

50 ms

50 ms

50 ms

Parity

None, 1 Stop Bit

None, 1 Stop Bit

None, 1 Stop Bit

Fixed Serial Data
Parameters

Modbus Flow Meter Data

Flow Data Register

40001, 40002

Data Type

Long Integer (2 registers), Binary, Signed

Byte Order

1234 (big-endian: most significant digits register first)

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The following table shows the PD6830X setup to work with two Modbus flowmeters.

Parameter

PD6830X

Description/Comment

Mode

Snooper

PV1

Enable

PV1 Slave ID

100

Flow Meter 1 Address

Function Code

03

Register PV1

40001

Flow Meter 1 Rate

Data Type

Long integer Binary,

Byte Order

1234

PV2

Enable

PV2 Slave ID

200

Flow Mater 2 Address

Function Code

03

Register PV2

40001

Flow Meter 2 Rate

Data Type

Long integer Binary,

Byte Order

1234

Snooper Mode Response Time

2.0 seconds

Default Value

Serial Communications

Scanner ID

246

Must be Unique on the Network

Baud

4600 bps

Must Match All Network Devices

Transmit Time Delay

50 ms

Parity

None, 1 Stop Bit

Must Match All Network Devices

Setup

Display

Top Display

PV, Tag, & Units

Show PV, Tag, and Units for Each Top PV

Bottom Display

PV, Tag, & Units

Show PV, Tag, and Units for Each Bottom PV

PV Setup

PV 1

Format

Top Display

Show PV 1 (Flow Meter 1 Rate) on Bottom Display

Tag

RATE 1

Indicates Flow Meter 1 Rate

Units

GPM

Indicates Gallons Per Minute

Display Decimal Point

1

Scale

Scaling for Rate

Input 1

00000

Display 1

0.0 Input 2

50000

Display 2

5000.0

PV 2

Format

Bottom Display

Show PV 2 (Flow Meter 2 Rate) on Bottom Display

Tag

RATE 2

Indicates Flow Meter 2 Rate

Units

GPM

Indicates Gallons Per Minute

Display Decimal Point

1

Scale

Scaling for Rate

Input 1

00000

Display 1

0.0 Input 2

50000

Display 2

5000.0

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Troubleshooting

Due to the many features and functions of the scanner, it’s possible that the setup of the scanner does not agree with
what an operator expects to see. If the scanner is not working as expected, refer to the Diagnostics menu and consult
the recommendations described below.

Troubleshooting Tips

Symptom

Check/Action

No display or faint display

Check power connection.
Press and hold Menu key for 5 seconds to check for Standby mode. If “WAKEUP?” is

displayed, press the Enter key to awaken the scanner from Standby mode.

SafeTouch Buttons do
not respond

If is displayed, hold Menu SafeTouch button to leave power save mode.
If is flashing, wait 60 seconds to leave mechanical pushbutton lockout mode.

If the cover was recently tightly secured, you may need to wait up to 2 minutes for
buttons to self-calibrate to the new cover position due to glass reflection.

Verify THRU-GLASS BUTTONS switch on display module is in ON position.
Sunlight can interfere with the sensors. It is recommended to shield the window

while operating the buttons by standing so as to block direct sunlight.

Scanner channel display
NONE

Verify that the polling parameters (slave address, register, etc) are correct. If the
channel is a math channel CV, verify the chosen math function does not include
any NONE selections or un-programmed Modbus PVs.

Long time between
channel value updates

Verify all channels are communicating. Errors, combined with long timeouts and
high allowable number of failures when polling Modbus devices, will combine to
significantly delay the polling speed. Reduce the number of allowable timeout
errors to check that communications are successful, and if there are errors, reduce
the timeout if possible.

Rate display unsteady

Increase low gate setting in Advanced menu.

Scanner displays span
error message during
scaling

Verify minimum input span requirements
Scanner flashes
maximum display

Check slave device registers are valid. Check math channels are not exceeding
maximum possible display. Check input signal is within scaled range of 99999.

Rate display response is
too slow

Check if gate settings can be lowered.

If the display locks up or
the scanner does not
respond

Perform hard reset by removing the display module or by removing DC power.
Backlight does not
appear.

Backlight is intended for viewing assistance in dim lighting. It may not be noticeable
under good lighting conditions.

Other symptoms

Call Technical Support for assistance.

Note: Certain sequences of events can cause unexpected results. To solve these issues, it is best to start fresh from
factory defaults and map changes ahead of time, rather than at random.

PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

64

Quick User Interface Reference

Pushbutton

Function

Go to Main menu. Back out one level
of programming.

Hold to enter Advanced menu.

Return to previous display variable.
Move to next digit or decimal point

position.
Return to previous same-level

programming menu.

Display next display variable.
Move to next selection or increment

digit.
Enter max/min display mode.

Pause/start automatic display
scanning.

Accept selection/value and move to
next selection.

Acknowledge Alarm.

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PD6830X Explosion-Proof Modbus Scanners

Instruction Manual

PRECISION DIGITAL CORPORATION

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