Remote Automation Solutions Modbus Express Module Instruction Manual (for ROC800-Series and FloBoss 107 Controllers) Manuals & Guides

Part D301746X012

Form A6341 May 2016

Modbus Express Module Instruction Manual (for ROC800-Series and FloBoss™ 107 Controllers)

Remote Automation Solutions

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Page

Revision

All pages

May-2016

All pages

April-2016

Initial release

January-2014

Revision Tracking Sheet

May 2016

This manual may be revised periodically to incorporate new or updated information. The revision date of each page appears at the bottom of the page opposite the page number. A change in revision date to any page also changes the date of the manual that appears on the front cover. Listed below is the revision date of each page (if applicable):

ii Revised May-2016

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Chapter 1 – Introduction

This chapter describes the structure of this manual and presents an overview of the Modbus Express Module for the ROC800-Series Remote Operations Controller (ROC800) and the FloBoss 107 Flow Manager (FB107). The Modbus Express Module provides all of the functions necessary to communicate with other devices using the Modbus protocol over RS-485 serial communications.

The Modbus Express Module streamlines the installation process by automatically installing all point types and screens that are part of the application.

1.1 Scope and Organization

This document serves as the user manual for the Modbus Express Module, which is intended for use in a ROC800 and FB107. This manual describes how to install and configure the Modbus Express Module (referred to as the “Modbus module” or “the module” throughout the rest of this manual). You access and configure this module using ROCLINK 800 Configuration Software loaded on a personal computer running Windows 2000 (with Service Pack 2), Windows XP, Windows Vista, or Windows 7.

The chapters in this manual provide information in a sequence appropriate for first-time users. Once you become familiar with the procedures and the software, the manual becomes a reference tool.

This manual has the following major sections:

 Chapter 1 – Introduction  Chapter 2 – Installation  Chapter 3 – Configuration  Chapter 4 – Usage  Chapter 5 – Reference

This manual assumes that you are familiar with the ROC800 and the FB107 and its configuration. For more information, refer to the following manuals:

 FloBoss™ 107 Flow Manager Instruction Manual (D301232X012).  ROC800 Remote Operations Controller Instruction Manual

(D301217X012).

 ROCLINK™ 800 Configuration Software User Manual (for FloBoss

107) (D301249X012).

 ROCLINK™ 800 Configuration Software User Manual (for ROC800-

Series) (D301250X012).

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Capabilities

The Modbus Express Module can simultaneously support up to six

three devices that use many entries. Refer to Table 1 for a list of Master

1.2 Product Overview

The Modbus Express module enables the ROC800 or the FB107 to communicate directly with devices using the Modbus protocol. The module has an on-board EIA-485 (RS-485) communications port for this purpose.

The Modbus Express module provides the following features:

 Predetermined register lists for the supported field devices  Easy addition and removal of devices from active service  The ability to poll for user defined registers from a field device  Advanced editing of the Modbus master table  Expanded registers which provide native I/O-like features for certain

registers

The data from the field devices is made available in the host device’s TLP database for easy access by other system features such as FSTs, meter runs, and PID loops, as well as a SCADA host system.

The application module communicates with up to six separate devices over a single multidrop 485 communication. The module also includes user displays, which are accessible by ROCLINK 800, providing a user interface to the application’s database.

The module contains two master tables, each with 25 entries. Each entry corresponds to a separate request to a device. The module uses 200 registers to store the data read from and written to the devices. The registers support integer and float data entries.

The Modbus Express module allows you to quickly add supported Modbus devices. The module’s Master Table is pre-populated to poll a list of pre-selected registers and the module's RS-485 communication port is pre-configured to match the selected device’s defaults (where possible). Once you add the device, you enable the Modbus polling, and the module begins to populate its registers with the data from the device.

Note: Some devices may require settings the module does not natively

support. You may externally configure these devices. Refer to Section 1.2.1, Supported Devices, for the specific devices supported at this time and Section 1.2.2, Module Wiring, for its wiring configurations.

Modbus devices, provided all devices use the same communication port settings. Since there is a limit to the available number of Master Table entries (50) and registers (200), the actual number of devices you can add depends on how the individual devices use the Master Tables and registers. For example, you may be able to add six devices that only use a few Master Table or register entries, or to add only two or

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Table and register entries required for each supported devices.

Use Express Mode to add multiple instances of the same devices, which only requires you to change the Modbus RTU address for each occurrence of the device.

Use Advanced Mode to add different devices, which must be preconfigured to use the same communication settings (baud rate, parity, data bits, stop bits, byte order, and RTU/ASCII mode). When using Advanced Mode, you should disable the module’s automatic configuration of communication ports and then manually configure the ports to match the common port settings currently in use.

The User Interface

The Modbus Express Module contains its own central processing unit (CPU) which handles the Modbus protocol and RS-485 communications. Any data a device sends or receives passes between the module’s CPU and the flow computer. Due to this architecture, the user interface has special considerations.

When you change information on a screen (entering a value in a field, selecting a checkbox, or selecting an item from a pull-down menu), the module does not “see” that change until you click Apply. Clicking Apply sends all changes on the screen to the module’s CPU for processing. When you update items in the module, any changes do not display on the screen until you click Update. If you click Update before the flow computer has received updated data from the module, the screen cannot show the changes.

For example, you select a different baud rate and then click Apply to apply that change to the module. If you then immediately click Update, the module’s CPU and the flow computer may not have had sufficient time to process your change and display it on the screen. You may need to click Update again. This is particularly evident with status/error messages.

Additionally, to ensure that the flow of data between the module and flow computer has sufficient processing and communication time, the module prevents you from entering data in certain fields on screens (such as "Add Device" and "Edit/Delete Device" tabs on the Setup configurations screen). This “locking” feature helps you to select components in the proper order. A green box around the button or frame indicates that it is active. For example, in the Add Device tab of the Setup configurations screen, if you select a device to add and then click Apply, the module locks the Device section of the screen and activates the Edit and Add Device buttons. At this point, you can only click Add Device to add the device you select, or click Edit to unlock the Device frame and make any changes. See Figures 1 and 2.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Device

Name

Code

Reg

Code

Reg

Type

Daniel

Status A

3

2458 1 28

Integer

Status B

3

2459 1 28

Integer

Status C

3

2460 1 28

Integer

Status D

3

2461 1 28

Integer

Status

3

2462 1 28

Integer

Data Qual

3

2300 1 29

Integer

Flow Dir

3

2463 1 28

Integer

Avg Flow

3

2018 2 66

Float

Avg Snd

3

2034 2 66

Float

Figure 1. Setup Screen – Device

Frame highlighted with a green

box

1.2.1 Supported Devices

The Modbus Express module allows devices to communicate using Modbus protocol over RS-485 serial communication. The following devices below are pre-mapped so configuration is not required.

 Daniel Model 3812 Liquid Ultrasonic Meter  Daniel Mark III Gas Ultrasonic Meter  Fisher Easy-Drive Actuator  Micro Motion Direct Connect (700/800 Core Processor)  Micro Motion Transmitter (1700/2700)  Micro Motion 7826/7828 Density Meter  Micro Motion 7829 Viscosity Meter  Rosemount 3095 MV Transmitter  Rosemount 3300 Guided Wave Radar Level  Platinum BMS-731 Burner Manager  Sick Maihak FlowSic600 Ultrasonic Meter  Krohne Altosonic V12 Ultrasonic Meter  Spectra Sensors SS500/SS2000/SS3000

Figure 2. Setup Screen – Edit and

Add Device Frame highlighted

with a green box

Table 1 shows the Master Table and Register entries for each supported

devices.

Table 1. Master Table and Register entries for supported devices

Register

Model 3812 Liquid Ultrasonic Meter

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Function

Slave

Num

Conv

Value

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Device

Name

Code

Reg

Code

Reg

Type

Avg Flow

3

2018 2 66

Float

Q Meter

3

2042 2 66

Float

Q Flow

3

2056 2 66

Float

Freq 1 KF

3

2516 2 66

Float

Freq ChA

3

2504 2 66

Float

Freq 1 KF

3

2566 2 66

Float

Freq ChA

3

2554 2 66

Float

CPU FW Ver

3

9006 1 29

Integer

Fwd A Hour

3

4110 1 29

Integer

Rev A Hour

3

4112 1 29

Integer

Fwd A Day

3

4160 1 29

Integer

Rev A Day

3

4162 1 29

Integer

Fwd A Hour

3

4210 1 29

Integer

Rev A Hour

3

4212 1 29

Integer

Fwd A Day

3

4260 1 29

Integer

Rev A Day

3

4262 1 29

Integer

Flow Time

3

2106 2 66

Float

Flow Time

3

2108 2 66

Float

Daniel Mark

Sys Status

3

10953 1 28

Integer

Path A Sta

3

10954 1 28

Integer

Path B Sta

3

10955 1 28

Integer

Path D Sta

3

10957 1 28

Integer

CPU SW Ver

3

11000 1 29

Integer

Data Qual

3

10584 1 29

Integer

Freq 1

3

12468 2 67

Float

Freq 2

3

12518 2 67

Float

K-Factor 1

3

12472 2 67

Float

K-Factor 2

3

12522 2 67

Float

Velocity

3

13574 2 67

Float

Spd of Snd

3

13594 2 67

Float

Ucorr Rate

3

13624 2 67

Float

Corr Rate

3

13638 2 67

Float

Pos Demand

3 0 1

28

Integer

Reset Diag

3 1 1

28

Integer

Recal Dmd

3 2 1

28

Integer

A Cal 0%

3 3 1

28

Integer

A Cal 100%

3 4 1

28

Integer

Actual Pos

3 9 1

28

Integer

Actual Dmd

3

10 1 28

Integer

Num Cycles

3

12 2 63

Integer

Tm Running

3

14 2 63

Integer

Tm Open

3

16 2 63

Integer

Tm Closed

3

18 2 63

Integer

A IP Val

3

24 1 28

Integer

Ctr Src

3

33 1 28

Integer

Loss D Pos

3

34 1 28

Integer

Deadband

3

35 1 28

Integer

LowT Ctoff

3

36 1 28

Integer

III Gas Ultrasonic Meter

Register

Path C Sta 3 10956 1 28 Integer

Function

Slave

Num

Conv

Value

Fisher EasyDrive Actuator

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Device

Name

Code

Reg

Code

Reg

Type

Comm Tmout

3

37 1 28

Integer

GO TO POS

6 0 1

28

Integer

SNR 1 AB

4

7025 2 65

Float

SNR 2 AB

4

7027 2 65

Float

SNR 3 AB

4

7029 2 65

Float

SNR 4 AB

4

7031 2 65

Float

SNR 5 AB

4

7033 2 65

Float

SNR 6 AB

4

7035 2 65

Float

SNR 1 BA

4

7037 2 65

Float

SNR 2 BA

4

7039 2 65

Float

SNR 3 BA

4

7041 2 65

Float

SNR 4 BA

4

7043 2 65

Float

SNR 5 BA

4

7045 2 65

Float

SNR 6 BA

4

7047 2 65

Float

Flow Rate

4

7055 2 65

Float

Velocity

4

7057 2 65

Float

Spd of Snd

4

7059 2 65

Float

Vel Path 1

4

7061 2 65

Float

Vel Path 2

4

7063 2 65

Float

Vel Path 3

4

7065 2 65

Float

Vel Path 4

4

7067 2 65

Float

Vel Path 5

4

7069 2 65

Float

Vel Path 6

4

7071 2 65

Float

Spd Snd 1

4

7073 2 65

Float

Spd Snd 2

4

7075 2 65

Float

Spd Snd 3

4

7077 2 65

Float

Spd Snd 4

4

7079 2 65

Float

Spd Snd 5

4

7081 2 65

Float

Spd Snd 6

4

7083 2 65

Float

Micro Motion

Meter Zero

1 4 1

28

Integer

Flow Dir

1

65 1 28

Integer

Status

3

244 2 70

Float

Mass Rate

3

246 2 70

Float

Density

3

248 2 70

Float

Temp

3

250 2 70

Float

Vol Rate

3

252 2 70

Float

Mass Total

3

258 2 70

Float

Vol Total

3

260 2 70

Float

Mass Inv

3

262 2 70

Float

Vol Inv

3

264 2 70

Float

Pr Corr Fl

3

266 2 70

Float

Pr Corr Dn

3

268 2 70

Float

Tube Freq

3

284 2 70

Float

L Pckf Vol

3

288 2 70

Float

Mass Fl Zr

3

292 2 70

Float

Micro Motion

Status

3

256 2 60

Integer

Cor Line D

3

257 2 65

Float

Cor Base D

3

258 2 65

Float

Krohne Altosonic V12 Ultrasonic Meter

Register

Function

Slave

Num

Conv

Value

Direct Connect (700/800) and Micro Motion Transmitter (1700/2700)

Drive Gain 3 290 2 70 Float

7826/7828 Density

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Device

Name

Code

Reg

Code

Reg

Type

Meter

Line Temp

3

259 2 65

Float

Coil Level

3

264 2 65

Float

Timer Per

3

261 2 65

Float

Micro Motion

Status

3

256 2 60

Integer

Line Dens

3

357 2 65

Float

Base Dens

3

258 2 65

Float

Line Temp

3

259 2 65

Float

Coil Level

3

264 2 65

Float

Time Per

3

261 2 65

Float

Kinem Visc

3

290 2 65

Float

Dynam Visc

3

289 2 65

Float

Platinum

Temp Deg C

4 8 1

28

Integer

Temp Deg C

4 9 1

28

Integer

Relights

4

10 1 28

Integer

Input Volt

4

28 2 67

Float

Aux A DegF

4

59 1 28

Integer

Aux B DegF

4

60 1 28

Integer

Curr State

3

23 1 28

Integer

Error Type

3

24 1 28

Integer

Reset Type

3

25 1 28

Integer

Reset Year

3

26 1 28

Integer

Reset Mnth

3

27 1 28

Integer

Reset Day

3

28 1 28

Integer

Reset Hour

3

29 1 28

Integer

Reset Min

3

30 1 28

Integer

Pilot On

3

31 2 57

Integer

Main Pilot On

3

33 2 57

Integer

TC A Temp

3

37 1 28

Integer

TC B Temp

3

38 1 28

Integer

Rem On Off

1

17 1 28

Integer

Rosemount

Status

4

2000 1 28

Integer

PV 4 2002 2 66

Float

SV 4 2004 2 66

Float

TV 4 2006 2 66

Float

FV 4 2008 2 66

Float

Sys Status

3

3002 1 28

Integer

Status 2

3

3004 1 28

Integer

Status 3

3

3005 1 28

Integer

Status 4

3

3006 1 28

Integer

Freq Hz

3

3028 1 28

Integer

Ext Stat 1

3

3057 1 28

Integer

Ext Stat 2

3

3058 1 28

Integer

Ext Stat 3

3

3059 1 28

Integer

Ext Stat 4

3

3059 1 28

Integer

Version

3

5001 2 61

Integer

System Err

3

5039 2 61

Integer

Limit Warn

3

5055 2 61

Integer

7829 Viscosity Meter

BMS731 Burner Manager

Register

FlamResist 4 14 1 28 Integer

Function

Slave

Num

Conv

Value

3095 MV Transmitter

Sick Maihak FloSci600 Ultrasonic Meter

Status 1 3 3003 1 28 Integer

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Device

Name

Code

Reg

Code

Reg

Type

Uncor Rate

3

7000 2 66

Float

Velocity

3

7003 2 66

Float

Spd of Snd

3

7002 2 66

Float

Meter Fact

3

7026 2 66

Float

Spectra

Concentrat

3

7000 2 65

Float

Temp

3

7002 2 65

Float

Pressure

3

7004 2 65

Float

Spply Volt

3

7006 2 65

Float

PkD1 Mid

3

7008 2 65

Float

FW Version

3

7112 2 65

Float

S Factor

3

7200 2 65

Float

Alm Flags

3

5000 2 64

Integer

FIELD

DEVICE

EXTERNAL

POWER

EXTERNAL

-

+

DEVICE

FIELD

POWER

EXTERNAL

DEVICE

FIELD

USER SUPPLIED

120 OHM TERMINATION RESISTOR

+ +

A

B

A

B

A

B

- -

Register

Sensors SS500 / SS2000 / SS3000

Function

1.2.2 Module and Device Wiring

Connect the device(s) to the communications port on the module using 16 to 24 AWG wiring. Figures 3 and 4 show sample wirings between the module and several sensor types. Figures 5 through 17 show the wiring diagrams for each supported devices.

Slave

Num

Conv

Value

Figure 3. Module Wiring FB107 (Generic)

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Note: S1, Port B - Half Duplex Set, Term On

FIELD

DEVICE

EXTERNAL

POWER

EXTERNAL

-

+

DEVICE

FIELD

POWER

EXTERNAL

DEVICE

FIELD

USER SUPPLIED

120 OHM TERMINATION RESISTOR

+ +

A

B

A

B

A

B

- -

Figure 4. Module Wiring for ROC800 (Generic)

Figure 5. Wiring diagram for Daniel Model

3812 Liquid Ultrasonic Meter

Figure 7. Wiring diagram for Fisher Easy-

Drive Actuator

Figure 6. Wiring diagram for Daniel Mark III

Gas Ultrasonic Meter

Figure 8. Wiring diagram for Micro Motion

Direct Connect 700 Core Processor and 800

Enhanced Core Processor

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Figure 9. Wiring diagram for 1700 / 2700

Micro Motion Transmitter

Figure 11. Wiring diagram for Micro Motion

7829 Viscosity Meter

Figure 10. Wiring diagram for Micro Motion

7826 / 7828 Density Meter

Figure 12. Wiring diagram for Platinum BMS-

731 Burner Manager

Figure 13. Wiring diagram for Rosemount 3300

Guided Wave Radar Level

10 Revised May-2016

Figure 14. Wiring diagram for Rosemount 3095

MV Transmitter

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

485 to RS-232 converter.

Figure 15. Wiring Diagram for Krohne

Altosonic V12 Ultrasonic Meter

Figure 16. Wiring Diagram for Spectra Sensors

SS500 / SS2000 / SS3000

Note: The Spectra Sensor devices do not

provide an RS-485 port, requiring a RS-

Figure 17. Wiring Diagram for Sick Maihak FlowSic600 Ultrasonic Meter

Note: By default, the RS-485 port on the FLOWSIC600 uses the SICK

Modbus ASCII protocol. You must change this to generic Modbus RTU protocol using the MEPAFLOW600 configuration software.

1.3 Module Requirements

The Modbus Express module is compatible with version 1.60 (or greater) of

the FB107 firmware, with

firmware, with version 1.30 (or greater) of the ROC800L firmware and with version 2.10 (or greater) of the ROCLINK 800 software.

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version 3.51 (or greater) of the ROC800 Series 2

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Chapter 2 – Installation

This chapter provides instructions for installing the Modbus Express module. Read Section 1.3 of this manual for the module requirements.

Note: You can install only one Modbus Express module in either the

ROC800 or the FB107.

2.1 Installing the Application Module

The application module occupies the standard footprint of an FB107 or ROC800 I/O or communications module.

To install the module in ROC800, place it in any empty slot on the ROC800. To install the module in FB107, remove power to the FB107. Place the module in an empty slot (1 through 7) on the FB107 and reapply power.

To ensure that the FB107 and ROC800 recognizes the module, you must perform a warm start (ROC > Flags > Warm Start).

Note: Although the label on the physical module is APP 485, the

Modules (for FB107) or the User Display (for ROC800) from the Directory Tree verifies that this module contains the Modbus Express application. See Figures 18 and 19.

Figure 18. Modbus Express Module (FB107)

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Figure 19. Modbus Express Module (ROC800)

Once you have verified that the ROC800 has recognized the Modbus Express module, proceed to Chapter 3 to begin configuring the module.

2.2 Updating the Application Module

The ROC800 version of the Modbus Express module is factory-loaded to use displays 69, 70, 71, and 72. If you have previously installed another application that already uses one of those displays, you must update the module’s firmware using the Modbus Express Module 1.01 ALT.BIN file, which provides the same functionality using displays 73, 74, 75, and 76. Contact Technical Support for a copy of the ALT.BIN file.

For further information on updating firmware, refer to Section 9.1 Update

Firmware, in Chapter 9 of the ROCLINK 800™ Configuration Software User Manual (for ROC800 Series), (part D301250X012).

2.3 MPU Loading Threshold (ROC800)

To maximize the performance of your ROC800 device, always verify the performance of specific application combinations before using them in the field to ensure the MPU load typically remains below 85% with peak MPU loading levels below 95%.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

To check the current MPU load at any time, select ROC > Information > Other Information and review the value in the MPU loading field.

Figure 20. MPU Loading

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

[This page is intentionally left blank.]

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Chapter 3 – Configuration

After you have successfully installed the Modbus Express module in the FB107 or ROC800, you configure the module using four module-specific screens (Setup, Master Table, Registers, and Expanded Registers). Use the Modbus Master Configuration screen to configure communications with the device(s).

You must configure the module before you can establish communications with the device(s). To configure the module (after logging onto ROCLINK 800 and successfully installing the module) proceed through the screens as shown in this chapter.

Note: The configurations screens of the Modbus Express module for both

the ROC800 and FB107 platform are identical.

You can access the module-specific screens from the main ROCLINK 800 screen:

Figure 21. ROCLINK 800 (FB107)

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

3.1 Setup Screen

Figure 22. ROCLINK 800 (ROC800)

Use this screen to configure the communications with Modbus devices and to add, edit, or delete Modbus devices. The Setup screen has three tabs

(Configure, Add Device, and Edit/Delete Device).

To Access this screen:

1. From the Directory Tree, double-click User Display if you use

ROC800 or Modules > Slot #, Modbus Express Mod if you use FB107.

Note: For FB107, the Slot # indicates the slot where you install your

Modbus Express module. For example, if you install your Modbus Express module in slot 2, then you double-click Module > Slot 2, Modbus Express Mod from the directory tree.

2. Double-click Display #69 - Modbus Express Module – Setup. The

setup screen displays:

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Figure 23. Modbus Setup screen

Follow Section 3.1.1 through Section 3.1.3 to configure the Configure, Add Device, and Edit/Delete Device tabs.

3.1.1 Setup – Configure Tab

Use this screen (which displays when you first access the Setup screen) to configure the comm port settings, Modbus protocol settings, and the Modbus mode for your Modbus devices.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field

Description

Figure 24. Setup – Configure screen

1. Review the values in the following fields:

Point Number

Baud Rate

Parity

Data Bits

Stop Bits

Selects the Modbus Express screen to configure. Available option is Setup configuration screen only.

Sets, in bits per second, the baud rate this comm port uses when transmitting and receiving data. The default value is 19.2 kbps.

Indicates whether the communications controller performs parity checks. The parity value can be odd, even, or none. The default value is None.

Sets the number of data bits contained in an

asynchronous byte or character. The default is

8.

Sets the number of stop bits contained in an

asynchronous byte or character. The default is

1.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field

Description

Byte Order

Sets the order of data bytes in a transmission or requests, which can be reversed. This only affects the Data field of a Modbus message and has no effect on the data bytes for Function Codes 01, 02, and 05. Valid values are Least Significant Byte First (places the Least Significant Byte first; this is the default value) and Most Significant Byte First (places the Most Significant Byte first).

Comm Mode

Sets the communications mode for the selected comm port. The Modbus protocol supports two modes of transmission, ASCII and RTU. RTU is the default.

Note: You must configure all devices in the

ASCII

same communications network with the same mode of transmission. Additionally, in either ASCII or RTU mode, the transmitting device places the Modbus message into a frame that has a known beginning and ending point.

American Standard Code for Information Interchange mode represents each 8-bit byte of data as two ASCII characters that are the hexadecimal representation of the value. This allows the messages to be read with the use of a dumb terminal, but uses twice as many characters as the RTU mode. Each character sent is composed of a start bit, 7 or 8 data bits, and one or two stop bits with Even, Odd, or No parity. ASCII mode uses Longitudinal Redundancy Checking (LRC) error checking.

Revised May-2016 21

RTU

Poll Master Table Once

Controls whether the system begins a Modbus Master polling sequence. Click to perform an on-demand poll of the Modbus master table.

Remote Terminal Unit mode allows for greater character density and better data throughput than ASCII for the same baud rate. Each message is transmitted in a continuous stream. Data is sent in 8-bit binary characters. RTU mode uses Cyclic Redundancy Check (CRC) error checking. This is the default.

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field

Description

Indicates whether the system continually

Starting Request

Number of Requests

Timeout

Sets a beginning value from which the Modbus Master polling sequence begins. This number corresponds to a line number on the Modbus Master Table associated with this comm port (Point Number 1, 1–25 and Point Number 2, 26–50).

Sets the total number of requests the Modbus Master makes for this polling sequence. This value specifies the total number of lines in the Master tables on which to execute the polls. The default value 0 prevents the polling from occurring.

Note: The tables are contiguous. If you

indicate requests that are more than a single table, the system accesses the second table to complete the request.

Sets the amount of time, in seconds, that the Master (Host) waits to receive a valid message after the FB107 or ROC800 sends a request to a device.

Note: A value less than 1 may not give

enough time for a response and may fail.

Retries

Continuous Polling

Request Delay

Good Messages

Bad Messages

Sets the number of times (after the initial try) that the Master, FB107 or ROC800, attempts to establish communications with the specified device before reporting a timeout error. Valid values are between 0 and 255; the default is 2.

executes the Modbus Master polling sequence. Valid values are Enabled (polling occurs continually) or Disabled (polling occurs only as requested).

Note: Use the Request Delay field to

schedule the continual polling.

Sets a delay time, in seconds, between polling sequences. A polling sequence includes all requests defined in the Number of Requests field.

Note: This field is valid only when you enable

Continuous Polling.

Indicates the number of valid responses the module has received.

Indicates the number of invalid responses the module has received.

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2. Click Apply to save any changes you have made to this screen.

3. Proceed to Section 3.1.2 to configure the Setup – Add Device Tab.

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

3.1.2 Setup – Add Device Tab

Use this screen to select and configure Modbus device. To access the screen:

1. Select the Add Device tab on the Setup Screen. The Add Device

screen displays:

Note: The green box around the section indicates that the section is

active and configurable.

Figure 25. Setup – Add Device screen

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field

Description

Figure 26. Setup – Add Device screen (Advanced mode – enabled)

2. Review the values in the following fields:

Device Type

RTU Address

Custom Name

Advanced

Set Master Mode Start/Num Reqs.

Set Comm Port to Device Defaults

Master Table Start

Selects the type of device to be added. Click

to display all available devices.

Sets the RTU address for the slave device to be queried.

Sets a custom tag up to 10 characters in length

you can define for the device.

Enables the advanced options for adding a device.

Allows master table adjustments. This parameter activates only when you select the Advanced option.

Allows communication settings adjustments This parameter activates only when you select the Advanced option.

Sets the location in master table to where the device is added. This parameter shows only when you select the Advanced option.

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Register Start

Sets the location in registers table to where the device is added. This parameter shows only when you select the Advanced option.

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field

Description

Description (1-8) Sets the description for additional registers.

This parameter shows only when you select the Advanced option.

Function Code (1-8) Sets the function code to be used for the added

registers. This parameter shows only when you select the Advanced option.

Slave Register (1-8) Configures the slave register to be polled.

Shows only when you select the Advanced option and activates only when the function

code is not disabled.

Number of Registers (1-8)

Conversion Code

Add Device – Automatic Mode

Add Device – Advanced Mode

Sets the number of slave registers to be polled. Shows only when you select the Advanced option and activates only when the function code is not set to disabled.

Sets the conversion code to be used for the additional registers. Shows only when you select the Advanced option and activates only when the function code is not set to disabled.

Shows the status or error for devices added automatically. This shows by default or when you uncheck the Advanced option.

Shows the status or error for devices added manually. Shows only when you select the

Advanced option

3. Click Apply to save any changes you have made to this screen.

4. Proceed to Section 3.1.3 to configure the Setup – Edit/Delete Device

Tab.

3.1.3 Setup – Edit/Delete Device Tab

Use this screen to edit and delete Modbus devices. To access the screen:

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1. Select the Edit/Delete Device tab on the Setup Screen. The

Edit/Delete Device screen displays:

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field

Description

Figure 27. Setup – Edit/Delete Device screen

2. Review the values in the following fields:

Device Type (1-6) Sets the device type.

RTU Address (1-6) Sets the RTU address for the device to be

queried.

Custom Name (1-6) Shows the custom name entered from Add

device tab.

Master Table Start (1-6)

Master Table End (1-6)

Register Start (1-6) Shows where in the Registers Table this

Register End (1-6) Shows where in the Registers Table this

Shows where in the Master Table this device's entries begin.

Shows where in the Master Table that this device's entries end.

device's entries begin. A value of 0 indicates

the device is not configured.

device's entries end. A value of 0 indicates the

device is not configured.

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Pack Master Table

Pack Registers

Status/Error

Deletes empty Master Table fields and makes the entries contiguous.

Deletes empty Registers Table fields and makes the entries contiguous.

Show the status error of the added devices

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

3. Click Apply to save any changes you have made to this screen.

4. Click Close to return to the main ROCLINK 800 screen. Proceed to

Section 3.2 to configure the Master Table Screen.

3.2 Master Table Screen

Use this screen to configure the Modbus Express master table. The module uses 50 Master Table entries (25 for each logical). To access this screen:

1. From the Directory Tree, double-click User Display if you use

ROC800 or Modules > Slot #, Modbus Express Mod if you use FB107.

Note: For FB107, the Slot # indicates the slot where you install your

2. Double-click Display #70 – Modbus Express Module – Master

Table. The setup screen displays:

Modbus Express module. For example, if you install your Modbus Express module in slot 2, then you double-click Module > Slot 2, Modbus Express Mod from the directory tree.

Figure 28. Master Table screen

3. Review the values in the following fields:

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field

Description

Point Number

RTU Address (1-25), (26-50)

Function Code (1-25), (26-50)

Slave Register

(1-25), (26-50)

Selects the Modbus master table to configure. Click

Sets the RTU address for the device to be queried.

Note: The Master Table screen has two

Sets the Modbus function code to be sent to the device. Click

codes.

Note: The Master Table screen has two

Sets the starting register number from which data is drawn from the device. Valid values are 1 to 65535.

Note: The Master Table screen has two

to display all available master tables.

continuous sections; rows 1-25 and rows 26- 50. Rows 1-25 are shown by default. Select 2 - MTbl 26-50 using the Point Number field to access rows 26-50.

to display all valid function

continuous sections; rows 1-25 and rows 26- 50. Rows 1-25 are shown by default. Select 2 - MTbl 26-50 using the Point Number field to access rows 26-50.

continuous sections; rows 1-25 and rows 26- 50. Rows 1-25 are shown by default. Select 2 - MTbl 26-50 using the Point

Number field to access rows 26-50.

Master Register

(1-25), (26-50)

Number of Registers

(1-25), (26-50)

Sets the starting register number into which data is stored on the device. Valid values are 1 to 65535.

Notes:

 This number corresponds to the Value field

on the Register screen.

 The Master Table screen has two

continuous sections; rows 1-25 and rows 26- 50. Rows 1-25 are shown by default. Select 2 - MTbl 26-50 using the Point Number field to access rows 26-50.

Sets the total number of registers to poll.

Note: The Master Table screen has two

continuous sections; rows 1-25 and rows 26- 50. Rows 1-25 are shown by default. Select 2 - MTbl 26-50 using the Point Number field to access rows 26-50.

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Field

Description

0

Inactive

1

Timeout Error

2

Addr Check

3

Function Code Error.

4

Num of Exp Bytes

5

RCV Slave Resp

6

CRC/LRC Check

7

CRC/LRC Check

8

Valid Response Received

128

Write Data Error

129

Acc Dev Data

130

Master Table Error

131

Trans Timeout

144

Tx/Rx Buff Ovr

145

Invalid Func #

Conversion Code

(1-25), (26-50)

Sets the type of conversion performed (if any) on data before it is either sent to the host or written to the FB107 or ROC800. The conversions accommodate differences in data types between the devices. Conversion codes

affect Function Codes 3, 4, 6, and 15. Click

to display all valid conversion codes:

0 = No Conversion 25 = Any type to FLOAT 26 = Any type to signed short 27 = Any type to signed long 28 = Any type to unsigned short 29 = Any type to unsigned long 30 = Any type to unsigned byte 57 = Any type to signed long 0,1,2,3 58 = Any type to signed long 1,0,3,2 59 = Any type to signed long 2,3,0,1 60 = Any type to signed long 3,2,1,0 61 = Any type to unsigned long 0,1,2,3 62 = Any type to unsigned long 1,0,3,2 63 = Any type to unsigned long 2,3,0,1 64 = Any type to unsigned long 3,2,1,0 65-72 = IEEE Floating Point Number

Note: The Master Table screen has two

continuous sections; rows 1-25 and rows 26- 50. Rows 1-25 are shown by default. Select 2 - MTbl 26-50 using the Point

Number field to access rows 26-50.

Comm Status (1-25),

(26-50)

This read-only field shows the status of the query.

Note: The Master Table screen has two

continuous sections; rows 1-25 and rows 26- 50. Rows 1-25 are shown by default. Select 2 - MTbl 26-50 using the Point Number field to access rows 26-50.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field

Description

Device (1-25), (26-50) Shows the custom name of the device.

Note: The Master Table screen has two

continuous sections; rows 1-25 and rows 26- 50. Rows 1-25 are shown by default. Select 2 - MTbl 26-50 using the Point

Number field to access rows 26-50.

4. Click Apply to save any changes you have made to this screen.

5. Click Close to return to the ROCLINK 800 screen. Proceed to Section

3.3 to configure the Register screen.

3.3 Registers Screen

The module uses 200 registers (50 for each logical) to store data read from or written to the devices. All register values are in float or register data types that depend on the conversion codes you use. To access this screen:

1. From the Directory Tree, double-click User Display if you use

ROC800 or Modules > Slot #, Modbus Express Mod if you use FB107.

Note: For FB107, the Slot # indicates the slot where you install your

Modbus Express module. For example, if you install your Modbus Express module in slot 2, then you double-click Module > Slot 2, Modbus Express Mod from the directory tree.

2. Double-click Display #71 – Modbus Express Module – Registers.

The Registers screen displays:

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Figure 29. Registers screen

3. Review—and change as necessary—the values in the following fields:

Field Description

Point Number

Tag

Register Value Integer (1-50), (51-

100), (101-150), and (151-200)

Register Value Float

(1-50), (51-100), (101-

150), and (151-200)

Selects one of the four register logicals. Click to display all available Registers tables.

Sets a unique identifier for the selected table.

Shows or sets the integer value for each register.

Note: The Registers table screen has four

continuous sections; rows 1-50, rows 51100, rows 101-150, and rows 151-200. Rows 1-50 are shown by default. Select 2

- Reg 51-100 using the Point Number field to access rows 51-100. Use the other Point Number options to access the rest of the rows.

Shows or sets the floating value for each register.

Note: The Registers table screen has four

continuous sections; rows 1-50, rows 51100, rows 101-150, and rows 151-200. Rows 1-50 are shown by default. Select 2

- Reg 51-100 using the Point Number field to access rows 51-100. Use the other Point Number options to access the rest of the rows.

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Field Description

Register Tag (1-50),

(51-100), (101-150), and (151-200)

Device (1-50), (51-

100), (101-150), and (151-200)

4. Click Close to return to the ROCLINK 800 screen. Proceed to Section

3.4 to configure the Expanded Registers screen.

3.4 Expanded Regs Screen

Shows or sets a unique identifier for each register.

Note: The Registers table screen has four

continuous sections; rows 1-50, rows 51100, rows 101-150, and rows 151-200. Rows 1-50 are shown by default. Select 2

- Reg 51-100 using the Point Number field to access rows 51-100. Use the other Point Number options to access the rest of the rows.

Shows the device’s custom name.

Note: The Registers table screen has four

continuous sections; rows 1-50, rows 51100, rows 101-150, and rows 151-200. Rows 1-50 are shown by default. Select 2

- Reg 51-100 using the Point Number field to access rows 51-100. Use the other Point Number options to access the rest of the rows.

Use this screen to configure the Expanded Registers. To access this screen:

1. From the Directory Tree, double-click User Display if you use

ROC800 or Modules > Slot #, Modbus Express Mod if you use FB107.

Note: For FB107, the Slot # indicates the slot where you install your

Modbus Express module. For example, if you install your Modbus Express module in slot 2, then you double-click Module > Slot 2, Modbus Express Mod from the directory tree.

2. Double-click Display #72 – Modbus Express Module – Expanded

Regs. The Expanded Registers screen displays:

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Figure 30. Expanded Registers screen, Register Type – Disabled

Figure 31. Expanded Registers screen, Register Type – Floating Point

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Figure 32. Expanded Registers screen, Register Type – Integer

Figure 33. Expanded Registers screen, Register Type – Digital

3. Review—and change as necessary—the values in the following fields:

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field Description

Point Number

Selects one of the twenty-five expanded register logicals.

Tag

Sets a unique identifier for the selected expanded register table.

Link to Register

Register Type

Set which register the expanded register maps to.

Sets the register type.

Float Value

Float Manual

Value

Units

Floating Point

Alarm

Shows the live floating value for the register. This parameter shows only when

Register Type is set to Floating Point.

Sets the manual float value for the register. This parameter shows only when

Register Type is set to Floating Point.

Configures the units for the register. This parameter shows only when Register

Type is set to Floating Point or Integer.

Sets the floating alarm. This parameter shows only when

Register Type is set to Floating Point.

Low Alarm Value

High Alarm Value

Alarm Deadband

Val.

Use Manual Float

Override

Clip Float Value to

Alarm Range

Sets the low alarm value. This parameter shows only when Register Type is set to Floating Point.

Sets the high alarm value. This parameter shows only when Register Type is set to Floating Point or Integer.

Sets the alarm deadband value. This parameter shows only when Register Type is set to Floating Point or Integer.

Configures float override. This parameter shows only when Register Type is set to Floating Point or Integer.

Sets float value clipping. This parameter shows only when Register Type is set to Floating Point.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field Description

Integer Value

Integer Manual

Value

Integer Alarm

Use Manual Int

Override

Clip Int Value to

Alarm Range

Show Integer Bits

Shows the live integer value for the register. This parameter shows only when

Register Type is set to Integer.

Sets the manual integer value for the register. This parameter shows only when

Register Type is set to Integer.

Sets the integer alarm. This parameter shows only when

Register Type is set to Integer.

Configures float override. This parameter shows only when Register Type is set to Integer.

Sets integer clipping to alarm range. This parameter shows only when Register Type is set to Integer.

Shows integers as bits. This parameter shows only when

Register Type is set to Integer.

Digital Status

Digital Manual

Status

Digital Alarm

Use Manual

Digital Status Override

Enables or disables the digital register type. This parameter shows only when

Register Type is set to Digital.

Sets the manual digital status for the register. This parameter shows only when

Register Type is set to Digital.

Sets the digital alarm mode. The digital alarm selections include: disable alarms, enable on set alarms, enable on clear alarms, and enable on change alarms. This parameter shows only when

Register Type is set to Digital.

Enables manual digital status override. This parameter shows only when

Register Type is set to Digital.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Field Description

Invert Status

Active Alarms

4. Click Close to return to the ROCLINK 800 screen. Proceed to Section

3.5 to save the configuration.

3.5 Saving the Configuration

Whenever you modify or change the configuration, it is a good practice to save the final configuration to memory. To save the configuration:

1. Select ROC > Flags. The Flags screen displays:

Sets user interface options. This parameter displays only when you select Digital as the Register Type.

Shows the active alarms.

Figure 34. Flags

2. Click Save Configuration. A verification message displays:

Figure 35. Save Verification

3. Click Yes to begin the save process. The Flash Write Status field on

the Flags screen displays In Progress. When the process ends, the Flash Write Status field on the Flags screen displays Completed.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

4. Click Update on the Flags screen. This completes the process of

saving your new configuration.

Note: For archive purposes, you should also save this configuration to

your PC’s hard drive or a removable media (such as a flash drive) using the File > Save Configuration option on the ROCLINK 800 menu bar.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Adding a Device using

From the Setup (Display #69) Configuration Screen, select the Add

Chapter 4 – Usage

This chapter describes quick start procedures and best practices for the Modbus Express module.

4.1 Quick Start Procedures

Defaults Settings

Device tab. A green box around the Device area indicates the portion of the display that is active.

1. Select a device from the Device Type pull-down menu and click the

Apply button. (If the device is not using the factory default RTU

address, you may optionally enter a custom address and a short custom name for the device. When you leave those fields empty, the Modbus Express module uses the program defaults.)

2. Click Update. The Status/Error box shows a Ready to Add message

and the green box highlights the Edit and Add Device buttons.

Note: It takes time before the changes to propagate.

3. Click the Add Device button. After a moment, click Update. The

Status/Error box displays Device Added message.

To verify if you successfully added the device, select the Edit/Delete Device tab from the Setup configuration screen. The screen shows all the devices you added with the default RTU Address and Custom Name. Other entries will show where in the Master Table the device is (start to end) and where in the Registers table the device registers are (start to end).

To begin polling, select the Configure tab of the Setup configuration screen, select Enabled from the Continuous Polling section and click Apply. Click Auto Scan to enable auto refresh of the display (remember to turn it off later), or click Update periodically to verify if the Good Messages count is increasing. If Bad Messages count increases, the device is either incorrectly wired or the comm port settings do not match the default communication settings the Modbus Express module uses.

The Modbus Express Module - Master Table (Display #70) screen also displays the entries of the device you add for further verification. The Comm Status and Comm Status Description columns indicate the statuses of each Master Table entry.

To check if the data are being polled from the device, view the Modbus Express Module - Registers (Display #71) screen and check if the Register entry of the device you add (either in the Integer column or Floating column) contains a value other than 0 or 0.0.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Deleting a Device

Packing the Master

Table/Registers

To delete a device:

1. Open the Edit/Delete Device tab of the Setup (Display #69)

configuration screen.

2. Check the box(es) of the device(s) you wanted to delete then click

Apply.

3. Click Update. The Status/Error field should show Ready to

Delete/Pack.

4. Click the Delete/Pack then wait a moment before you click

Update. The Status/Error shows Device Deleted. This resets the

device entries to empty or zero values.

Note:

 If desired, you can reset the Starting Request and Number of

Request Values using the Configure tab of the Setup (Display #69) configuration screen.

 The Modbus Express module ignores empty Master Table entries.

If you delete a device, you may leave gaps in the Master Table or Registers table. For example, if you add three devices and the first device takes Master Table entries 1-3, the second takes entries 4-9, and the third takes entries 10-15, the deletion of the second device leaves entries 4-9 empty.

Disabling Automatic

Comm Port or Master

Mode Configuration

(Advanced Mode)

If this is undesirable, you can check the Pack Master Table the Edit/Delete Device tab of the Modbus Express Module – Setup

(Display #69) configuration screen to remove the empty entries. So, If you select Pack Master Table the first device still occupies entries 13, the former third device (originally entries 10-15) moves down to 510 and so on. The same thing applies to the Registers. This is to make more contiguous empty entries in the tables for adding new devices.

You can access the Advanced mode using the Add Device tab on the Modbus Express Module – Setup (Display #69) configuration screen. When you enable the Advanced mode, you can override the automatic setting of the Master Mode and the comm port settings.

When you uncheck the Set Master Mode Start/Num Reqs, the module prevents the automatic setting of the Master Mode such as setting the starting entry and the number of requests. When you uncheck the Set Comm Port to Defaults, the module prevents automatic configuration of the RS485.

If you add a device with different comm port settings than factory defaults, enable the Advanced mode and uncheck Set Comm Port Device Defaults.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

manual entries made by the user.

Overriding Custom

Table Index Entries

(Advanced Mode)

Adding Extra Modbus

Registers

(Advanced Mode)

When in Advanced mode, you can specify the location of your device’s entries in the Master Table and Registers table. If you specify Master Table Start to be 10, the device's Master Table entries start at

10. If a device is already present or if table spaces are not enough to accommodate the entries, the module returns an error. The same thing applies for device registers if you specify the Registers Start value.

This feature is applicable if you are sectioning your device’s entries in the Registers table. Since each Registers table is made up of four columns with 25 registers each (1-25, 26-75, etc.), you can add a device with less than 25 registers at entry 1, then the second device at entry 26, the third device at entry 76, and so on. This places the device entries in each column of the Registers table. This feature does not affect any process.

You can add up to eight additional Master Table entries for the device to enable polling of additional custom device registers. You can add any device registers. After you add the device, these registers appear in the Master Table and Registers entry for the device. If you delete the device, the module deletes these additional entries along with the default entries. The entries also move along with default entries if you pack the Master Table or Registers.

Manually Adding

Master Table and

Registers

You can set a custom Register tag name for each extra modbus register. If you add and entry that polls multiple registers and only entered the description of first entry, the first Register uses the description name you enter plus a generated name of "+RegXXX" where "XXX" is an offset from the Register value. For example, if you enter “Volume” in the first register at register 3000, you first register name is “Volume” plus “+Reg3002”, “+Reg3004”, etc. You can change these generated names in the Modbus Express Modules - Registers (Display #71) configuration screen.

You can configure the Modbus Express module manually to add devices that are not natively supported by the module.

You must manually configure the Master Table start and end request entries to include any manual Master Table entries you add. You must enable Continuous Polling using the Configure tab of the Setup configuration screen.

Note: Any devices added by Express Mode will not overwrite any

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Monitor the Good

When you enable Continuous Polling, the Good Messages counter

4.2 Best Practices

Messages Counter

Check the Master Table

Comm Status field

increments for each line in the Master Table that is successfully polled. Any FST or other application that monitors Modbus Express Registers should verify that the Good Messages count is incrementing. If not, the Registers data may not be accurate. If you detect this situation, check the Master Table status.

Note: The baud rate of the comm port, the number of slave registers

being polled in the Master Table, and the Request Delay value all impact how often the Good Messages counter increments. Reading the Register values may happen faster than the Modbus Express module can retrieve data from the device(s).

If you configure a device is with ten Master Table entries, each entry has a Comm Status value of 8 indicating that the last poll was successful. If Good Messages value appears to stop incrementing, an FST can scan through the Master Table Comm Status parameters for the device and look for error indicators.

Note: Both Good Messages and Comm Status should be checked to

verify an error. In the event of some failure of the Modbus Express module, such as the disconnected cable, the Comm Status values remain in the last successful polling but do not indicate any error.

To verify errors:

1. Check if the Good Messages has incremented since the last check.

2. If Good Messages does not increment, check Master Table –

Comm Status fields for the device being polled and check for nonsuccessful status codes.

3. Handle this potential error as needed.

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Chapter 5 – Reference Materials

This section provides tables of information on the point types the Modbus Express module uses.

For the FB107:

 Point Type 68 (Modbus Express Setup)  Point Type 69 (Modbus Master Table)  Point Type 70 (Modbus Registers)  Point Type 71 (Modbus Expanded Registers)

For the ROC800:

 Point Type 247 (Modbus Express Setup)  Point Type 248 (Modbus Master Table)  Point Type 249 (Modbus Registers)  Point Type 250 (Modbus Expanded Registers)

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

5.1 Point Type 68/247: Modbus Express Setup

Point type 68 (for FB107) or 247 (for ROC800) contains configuration parameters for the Modbus Express App Module as a whole. There is a single logical for this point type.

Point Type 68/247: Modbus Express Setup

Parm

#

0 Point Tag ID R/W User AC 10

1 Baud Rate R/W User UINT8 1 0-3 3 1.00 Sets the baud rate for the RS-

2 Data Bits R/W User UINT8 1 0-1 8 1.00 Sets the data bits.

3 Stop Bits R/W User UINT8 1 0-1 1 1.00 Sets the stop bits.

4 Parity R/W User UINT8 1 0-2 0 1.00 Sets the parity.

5 Transmission Mode R/W User UINT8 1 0-1 0 1.00 Controls the type of

6 Byte Order R/W User UINT8 1 0-1 0 1.00 Controls which byte is sent out

Name Access

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

"EasyMB Cfg" 1.00 Sets point type description

Description of functionality

and meaning of values

485 communication port

0 = 2400 1 = 4800 2 = 9600 3 = 19200

7 = 7 bits 8 = 8 bits

1 = 1 bit 2 = 2 bits

0 = None 1 = Odd 2 = Even

transmission mode desired.

0 = RTU Mode 1 = ASCII Mode

first for floats, short integers, and long integers.

0 = LSB first (Associated with little-endian processors) 1 = MSB first (Associated with big-endian processors)

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Parm

#

7 Master Poll Trigger R/W User UINT8 1 0-1 0 1.00 Controls the initiation of a

8 Master Start Reg

Num

9 Master Num

Requests

10 Master Cont Poll

Enable

11 Master Poll Delay R/W User UINT32 4 0-86400 (24 hrs) 1 1.00 Contains the delay time in

12 Master Poll Timeout R/W User UINT16 4 0-3600 (1 hr) 1 1.00 Contains the amount of time in

13 Master Poll Retries R/W User UINT8 1 0-255 3 1.00 Sets the number of times a

14 Number of Good

Msgs

Name Access

R/W User UINT8 1 0-255 0 1.00 Sets on which row the scanning

R/W User UINT8 1 0-255 0 1.00 Sets the number of rows to be

R/W User UINT8 1 0-1 0 1.00 Controls whether the Modbus

R/W System UINT32 4 0-4294967295 0 1.00 Indicates the number of good

System or

User Update

Data Type Length Range Default Version

Description of functionality

and meaning of values

Modbus master polling sequence.

0 = Idle 1 = Enable a one-time pass through the Master Table.

begins.

polled. The polling starts on what is set in Master Start Reg Num.

master poll request sequence.

0 = Disabled 1 = Continuously poll the configured Master Table, with a Master Poll Delay between each scan.

seconds between continuous master poll requests (Continous poll mode only).

seconds the module will wait for a response from a device before marking it as timeout error.

Master Table row will be retried in the event of a timeout.

Modbus responses received from all devices.

Revised May-2016 45

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Point Type 68/247: Modbus Express Setup

Parm

#

15 Number of Bad Msgs R/W System UINT32 4 0-4294967295 0 1.00 Indicates the number of bad

16 Device 1 Type R/W User UINT8 1 0-15 0 1.00 Selects the type of device.

17 Device 1 Address R/W User UINT8 1 0-255 0 1.00 Sets the Modbus slave address

18 Device 1 Name R/W User/System AC10 10

19 Device 1 Table Start R/W User UINT1 1 0-50 0 1.00 Sets the starting row for this

20 Device 1 Table End R/W User UINT8 1 0-50 0 1.00 Sets the last row for this device

Name Access

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

0 1.00 Shows the name defined for

Description of functionality

and meaning of values

Modbus responses received from all devices.

0 = None Selected 1 = Daniel 3812 2 = Reserved 3 = Daniel Mark III 4 = Fisher easy-Drive D4 5 = Reserved 6 = Reserved 7 = Khrone Altosonic V12 8 = Micro Motion 800 9 = Micro Motion Trans 10 = Micro Motion 7826 11 = Micro Motion 7928 12 = Platinum BMS 731 13 = Rosemount 3095 MVT 14 = Rosemount 3300 GWR 15 = Sick Maihak FlowSIC 600 16 = Spectra SS500 / SS2000 / SS3000

for this device.

this device. The module populates this field according to the device type but this can be overwritten.

device in the Modbus master table.

in the Modbus master table.

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Parm

#

21 Device 1 Regs Start R/W User UINT8 1 0-200 0 1.00 Sets the first register for this

22 Device 1 Regs End R/W User UINT8 1 0-200 0 1.00 Sets the last register for this

23 Device 2 Type R/W User UINT8 1 (See Param 16) 0 1.00 Sets the type of device

24 Device 2 Address R/W User UINT8 1 0-255 0 1.00 Sets the Modbus slave address

25 Device 2 Name R/W Both AC10 10

26 Device 2 Table Start R/W User UINT8 1 0-50 0 1.00 Sets the starting row for the

27 Device 2 Table End R/W User UINT8 1 0-50 0 1.00 Sets the last row for this device

28 Device 2 Regs Start R/W User UINT8 1 0-200 0 1.00 Sets the first register for this

29 Device 2 Regs End R/W User UINT8 1 0-200 0 1.00 Sets the last register for this

30 Device 3 Type R/W User UINT8 1 (See Param 16) 0 1.00 Sets the type of device

31 Device 3 Address R/W User UINT8 1 0-255 0 1.00 Sets the Modbus slave address

Name Access

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

“” 1.00 Sets the device name. The

Description of functionality

and meaning of values

device in the Modbus registers list. A value of 0 indicates the device is not configured.

configured for this instance. (See Param 16)

for the device.

module populates this field according to the device type, but may be overwritten.

device in the Modbus master table.

in the Modbus master table.

device in the Modbus registers list. A value of 0 indicates the device is not configured.

configured for this instance. (See Param 16)

for the device.

Revised May-2016 47

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Point Type 68/247: Modbus Express Setup

Parm

#

32 Device 3 Name R/W Both AC10 10

33 Device 3 Table Start R/W User UINT8 1 0-50 0 1.00 Sets the starting row for the

34 Device 3 Table End R/W User UINT8 1 0-50 0 1.00 Sets the last row for this device

35 Device 3 Regs Start R/W User UINT8 1 0-200 0 1.00 Sets the first register for this

36 Device 3 Regs End R/W User UINT8 1 0-200 0 1.00 Sets the last register for this

37 Device 4 Type R/W User UINT8 1 (See Param 16) 0 1.00 Sets the type of device

38 Device 4 Address R/W User UINT8 1 0-255 0 1.00 Sets the Modbus slave address

39 Device 4 Name R/W Both AC10 10

40 Device 4 Table Start R/W User UINT8 1 0-50 0 1.00 Sets the starting row for the

41 Device 4 Table End R/W User UINT8 1 0-50 0 1.00 Sets the last row for this device

42 Device 4 Regs Start R/W User UINT8 1 0-200 0 1.00 Sets the first register for this

Name Access

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

0x20 → 0x7E for

each ASCII

character

“” 1.00 Sets the device name. The

Description of functionality

and meaning of values

module populates this field according to the device type, but may be overwritten.

device in the Modbus master table.

in the Modbus master table.

device in the Modbus registers list. A value of 0 indicates the device is not configured.

configured for this instance. (See Param 16)

for the device.

module populates this field according to the device type, but may be overwritten.

device in the Modbus master table.

in the Modbus master table.

device in the Modbus registers list. A value of 0 indicates the device is not configured.

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Parm

#

43 Device 4 Regs End R/W User UINT8 1 0-200 0 1.00 Sets the last register for this

44 Device 5 Type R/W User UINT8 1 (See Param 16) 0 1.00 Sets the type of device

45 Device 5 Address R/W User UINT8 1 0-255 0 1.00 Sets the Modbus slave address

46 Device 5 Name R/W Both AC10 10

47 Device 5 Table Start R/W User UINT8 1 0-50 0 1.00 Sets the starting row for the

48 Device 5 Table End R/W User UINT8 1 0-50 0 1.00 Sets the last row for this device

49 Device 5 Regs Start R/W User UINT8 1 0-200 0 1.00 Sets the first register for this

50 Device 5 Regs End R/W User UINT8 1 0-200 0 1.00 Sets the last register for this

51 Device 6 Type R/W User UINT8 1 (See Param 16) 0 1.00 Sets the type of device

52 Device 6 Address R/W User UINT8 1 0-255 0 1.00 Sets the Modbus slave address

53 Device 6 Name R/W Both AC10 10

Name Access

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

0x20 → 0x7E for

each ASCII

character

“” 1.00 Sets the device name. The

Description of functionality

and meaning of values

device in the Modbus registers list. A value of 0 indicates the device is not configured.

configured for this instance. (See Param 16)

for the device.

module populates this field according to the device type, but may be overwritten.

device in the Modbus master table.

in the Modbus master table.

device in the Modbus registers list. A value of 0 indicates the device is not configured.

configured for this instance. (See Param 16)

for the device.

module populates this field according to the device type, but may be overwritten.

Revised May-2016 49

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Point Type 68/247: Modbus Express Setup

Parm

#

54 Device 6 Table Start R/W User UINT8 1 0-50 0 1.00 Sets the starting row for the

55 Device 6 Table End R/W User UINT8 1 0-50 0 1.00 Sets the last row for this device

56 Device 6 Regs Start R/W User UINT8 1 0-200 0 1.00 Sets the first register for this

57 Device 6 Regs End R/W User UINT8 1 0-200 0 1.00 Sets the last register for this

58 Add MB Device Type R/W User UINT8 1 1-(See Param 16) 0 1.00 Sets the type of device to be

59 Add MB Dev Address R/O System UINT16 2 0-65535 0 1.00 Sets the RTU address of device

60 Add MB Dev Name R/O System AC10 10

61 Add MB Dev Tbl Start R/O System UINT8 1 0-50 0 1.00 Sets the location of the device

62 Add MB Dev Regs

Start

63 Add MB Dev Tag 1 R/W User AC10 10

Name Access

R/O User UINT8 1 0-200 0 1.00 Sets the location of the device

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

0x20 → 0x7E for

each ASCII

character

“” 1.00 Sets the short name of device

“” 1.00 Sets the description for the

Description of functionality

and meaning of values

device in the Modbus master table.

in the Modbus master table.

device in the Modbus registers list. A value of 0 indicates the device is not configured.

added. (See Param 16)

to be added.

in the Modbus master table to add device (0=default).

in Modbus registers table to add device (0=default).

additional register(s).

50 Revised May-2016

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Parm

#

64 Add MB Dev Func

Code 1

65 Add MB Dev Slave

Reg 1

66 Add MB Dev Num

Regs 1

67 Add MB Dev Conv

Code 1

68 Add MB Dev Tag 2 R/W User AC10 10

69 Add MB Dev Func

Code 2

70 Add MB Dev Slave

Reg 2

Name Access

R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code

R/W User UIN16 2 0-65535 0 1.00 Sets the slave register(s) to be

R/W User UINT8 1 0-255 0 1.00 Sets the number of slave

R/W User UINT8 1 0, 25-30, 57-72 0 1.00 Sets the conversion code to be

R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code

R/W User UINT16 2 0-65535 0 1.00 Sets the slave register(s) to be

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

Description of functionality

and meaning of values

to be used for the additional register(s).

0 = Disabled 1 = Read Coil Status 2 = Read Input Status 3 = Read Holding Registers 4 = Read Input Registers 5 = Force Single Coil 6 = Preset Single Register 15 = Force Multiple Coils 16 = Preset Multiple Registers

polled.

registers to be polled.

used for the additional register(s).

“” 1.00 User entered description for the

additional register(s).

to be used for the additional register(s).

0 = Disabled 1 = Read Coil Status 2 = Read Input Status 3 = Read Holding Registers 4 = Read Input Registers 5 = Force Single Coil 6 = Preset Single Register 15 = Force Multiple Coils 16 = Preset Multiple Registers

polled.

Revised May-2016 51

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Point Type 68/247: Modbus Express Setup

Parm

#

71 Add MB Dev Num

Regs 2

72 Add MB Dev Conv

Code 2

73 Add MB Dev Tag 3 R/W User AC10 10

74 Add MB Dev Func

Code 3

75 Add MB Dev Slave

Reg 3

76 Add MB Dev Num

Regs 3

77 Add MB Dev Conv

Code 3

78 Add MB Dev Tag 4 R/W User AC10 10

Name Access

R/W User UINT8 1 0-255 0 1.00 Sets the number of slave

R/W User UINT8 1 0, 25-30, 57-72 0 1.00 Sets the conversion code to be

R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code

R/W User UINT16 2 0-65535 0 1.00 Sets the slave register(s) to be

R/W User UINT8 1 0-255 0 1.00 Sets the number of slave

R/W User UINT8 1 0, 25-30, 57-72 0 1.00 Sets the conversion code to be

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

0x20 → 0x7E for

each ASCII

character

Description of functionality

and meaning of values

registers to be polled.

used for the additional register(s).

“” 1.00 Sets the description for the

additional register(s).

to be used for the additional register(s).

0 = Disabled 1 = Read Coil Status 2 = Read Input Status 3 = Read Holding Registers 4 = Read Input Registers 5 = Force Single Coil 6 = Preset Single Register 15 = Force Multiple Coils 16 = Preset Multiple Registers

polled.

registers to be polled.

used for the additional register(s).

“” 1.00 Sets the description for the

additional register(s).

52 Revised May-2016

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Parm

#

79 Add MB Dev Func

Code 4

80 Add MB Dev Slave

Reg 4

81 Add MB Dev Num

Regs 4

82 Add MB Dev Conv

Code 4

83 Add MB Dev Tag 5 R/W User AC10 10

84 Add MB Dev Func

Code 5

85 Add MB Dev Slave

Reg 5

Name Access

R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code

R/W User UINT16 2 0-65535 0 1.00 Sets the slave register(s) to be

R/W User UINT8 1 0-255 0 1.00 Sets the number of slave

R/W User UINT8 1 0, 25-30, 57-72 0 1.00 Sets the conversion code to be

R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code

R/W User UINT16 2 0-65535 0 1.00 Sets the slave register(s) to be

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

Description of functionality

and meaning of values

to be used for the additional register(s).

0 = Disabled 1 = Read Coil Status 2 = Read Input Status 3 = Read Holding Registers 4 = Read Input Registers 5 = Force Single Coil 6 = Preset Single Register 15 = Force Multiple Coils 16 = Preset Multiple Registers

polled.

registers to be polled.

used for the additional register(s).

“” 1.00 Sets the description for the

additional register(s).

to be used for the additional register(s).

0 = Disabled 1 = Read Coil Status 2 = Read Input Status 3 = Read Holding Registers 4 = Read Input Registers 5 = Force Single Coil 6 = Preset Single Register 15 = Force Multiple Coils 16 = Preset Multiple Registers

polled.

Revised May-2016 53

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Point Type 68/247: Modbus Express Setup

Parm

#

86 Add MB Dev Num

Regs 5

87 Add MB Dev Conv

Code 5

88 Add MB Dev Tag 6 R/W User AC10 10

89 Add MB Dev Func

Code 6

90 Add MB Dev Slave

Reg 6

91 Add MB Dev Num

Regs 6

92 Add MB Dev Conv

Code 6

93 Add MB Dev Tag 7 R/W User AC10 10

Name Access

R/W User UINT8 1 0-255 0 1.00 Sets the number of slave

R/W User UINT8 1 0, 25-30, 57-72 0 1.00 Sets the conversion code to be

R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code

R/W User UINT16 2 0-65535 0 1.00 Sets the slave register(s) to be

R/W User UINT8 1 0-255 0 1.00 Sets the number of slave

R/W User UINT8 1 0, 25-30, 57-72 0 1.00 Sets the conversion code to be

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

0x20 → 0x7E for

each ASCII

character

Description of functionality

and meaning of values

registers to be polled.

used for the additional register(s).

“” 1.00 Sets the description for the

additional register(s).

to be used for the additional register(s).

0 = Disabled 1 = Read Coil Status 2 = Read Input Status 3 = Read Holding Registers 4 = Read Input Registers 5 = Force Single Coil 6 = Preset Single Register 15 = Force Multiple Coils 16 = Preset Multiple Registers

polled.

registers to be polled.

used for the additional register(s).

“” 1.00 Sets the description for the

additional register(s).

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Parm

#

94 Add MB Dev Func

Code 7

95 Add MB Dev Slave

Reg 7

96 Add MB Dev Num

Regs 7

97 Add MB Dev Conv

Code 7

98 Add MB Dev Tag 8 R/W User AC10 10

99 Add MB Dev Func

Code 8

100 Add MB Dev Slave

Reg 8

Name Access

R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code

R/W User UINT16 2 0-65535 0 1.00 Sets the slave register(s) to be

R/W User UINT8 1 0-255 0 1.00 Sets the number of slave

R/W User UINT8 1 0, 25-30, 57-72 0 1.00 Sets the conversion code to be

R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code

R/W User UINT16 2 0-65535 0 1.00 Sets the slave register(s) to be

System or

User Update

Data Type Length Range Default Version

0x20 → 0x7E for

each ASCII

character

Description of functionality

and meaning of values

to be used for the additional register(s).

0 = Disabled 1 = Read Coil Status 2 = Read Input Status 3 = Read Holding Registers 4 = Read Input Registers 5 = Force Single Coil 6 = Preset Single Register 15 = Force Multiple Coils 16 = Preset Multiple Registers

polled.

registers to be polled.

used for the additional register(s).

“” 1.00 Sets the description for the

additional register(s).

to be used for the additional register(s).

0 = Disabled 1 = Read Coil Status 2 = Read Input Status 3 = Read Holding Registers 4 = Read Input Registers 5 = Force Single Coil 6 = Preset Single Register 15 = Force Multiple Coils 16 = Preset Multiple Registers

polled.

Revised May-2016 55

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Point Type 68/247: Modbus Express Setup

Parm

#

101 Add MB Dev Num

Regs 8

102 Add MB Dev Conv

Code 8

103 Add MB Checkbox R/W User UINT8 1 0-255 3 1.00 Bit 0 = Adjust Master Table

104 Add MB Button R/W User UINT8 1 0-2 0 1.00 0 = Idle

105 Del MB Checkbox R/W User UINT8 1 0-255 0 1.00 Bit 0 = Delete device 1

106 Dell MB Button R/W User UINT8 1 0-2 0 1.00 0 = Idle

Name Access

R/W User UINT8 1 0-255 0 1.00 Sets the number of slave

R/W User UINT8 1 0, 25-30, 57-72 0 1.00 Sets the conversion code to be

System or

User Update

Data Type Length Range Default Version

Description of functionality

and meaning of values

registers to be polled.

used for the additional register(s).

Bit 1 = Adjust Comm Settings Bit 2 = unused Bit 3 = unused Bit 4 = unused Bit 5 = unused Bit 6 = unused Bit 7 = Advanced Options enable

1 = Device to add selected 2 = Device input locked, Add button enabled

Bit 1 = Delete device 2 Bit 2 = Delete device 3 Bit 3 = Delete device 4 Bit 4 = Delete device 5 Bit 5 = Delete device 6 Bit 6 = Pack Master Table Bit 7 = Pack Registers

1 = Devices to delete selected 2 = Device input locked, Delete button enabled

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Parm

#

107 MB Error / Status R/O System UINT8 1 0-255 0 1.00 Shows the Modbus error or

Name Access

System or

User Update

Data Type Length Range Default Version

Description of functionality

and meaning of values

status.

Status:

0 = Idle 1 = Ready to Add 2 = Device Added 3 = Ready to Delete/Pack 4 = Device Deleted 5 = Master Table Packed 6 = Registers Packed 7 = Both Master Tbl/Registers Packed

Errors:

250 = Bad Conversion Code 251 = Invalid Device Type selected 252 = Unable to Delete/Pack 253 = Master Table Full 255 = Registers Full 255 = Device Table Full

Revised May-2016 57

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

5.2 Point Type 69/248: Modbus Master Table

Point type 69 (for FB107) or 248 (for ROC800) contains configuration parameters for the Modbus Master Table. There are two logicals for this point type.

Point Type 69/248: Modbus Master Table

Parm

#

0 Point Tag ID R/W User AC10 10

1 Slave Address 1 R/W User UINT8 1 0-255 0 1.00 Sets the device RTU address

2 Function Code 1 R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code:

3 Slave Register 1 R/W User UINT16 2 0-65535 0 1.00 Sets the device register

4 Master Register 1 R/W User UINT8 1 0-200 0 1.00 Sets the App module register

5 Number of Registers 1 R/W User UINT8 1 0-255 0 1.00 Sets the number of registers to

Name Access

System or

User Update

Data

Type

Length Range Default Version

0x20 → 0x7E for

each ASCII

character

"Master

Tbl X"

where X

is the

logical

1.00 Sets the point type description.

Description of functionality and

meaning of values

0 = Disabled 1 = Read logic coil status 2 = Read discrete input status 3 = Read output registers (holding) 4 = Read input registers 5 = Force single logic coil 6 = Preset single holding register 15 = Force multiple logic coils 16 = Preset multiple holding registers

request from device

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Parm

#

6 Conversion Code 1 R/W User UINT8 1 0, 25-30, 57-74 0 1.00 Sets the conversion code:

Name Access

System or

User Update

Data

Type

Length Range Default Version

Description of functionality and

meaning of values

0 = No Conversion 25 = Any type to FLOAT 26 = Any type to signed short 27 = Any type to signed long 28 = Any type to unsigned short 29 = Any type to unsigned long 30 = Any type to unsigned byte 57 = Any type to signed long 0,1,2,3 58 = Any type to signed long 1,0,3,2 59 = Any type to signed long 2,3,0,1 60 = Any type to signed long 3,2,1,0 61 = Any type to unsigned long 0,1,2,3 62 = Any type to unsigned long 1,0,3,2 63 = Any type to unsigned long 2,3,0,1 64 = Any type to unsigned long 3,2,1,0 65-72 = IEEE FLOATing Point Number

Revised May-2016 59

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Point Type 69/248: Modbus Master Table

Parm

#

7 Comm Status 1 R System UINT8 1 0-9, 128-131,

…

Name Access

System or

User Update

Data

Type

Length Range Default Version

0 1.00 Shows the last poll status.

144-145

Description of functionality and

meaning of values

0 = Inactive 1 = Timeout Error 2 = Addr Check 3 = Function Code Error 4 = Num of Exp Bytes 5 = Rcv Slave Resp 6 = CRC/LRC Check 7 = CRC/LRC Check 8 = Valid Slave Resp 128 = Write Data Err 129 = Acc Dev Data 130 = Master Table Error 131 = Trans Timeout 144 = Tx/Rx Buff Ovr 145 = Invalid Func #

Note: Parameters 1-7 repeat up to 25 times, once for each Master Table entry.

169 Slave Address 25 R/W User UINT8 1 0-255 0 1.00 Sets the slave RTU address

170 Function Code 25 R/W User UINT8 1 0-6, 15-16 0 1.00 Sets the Modbus function code:

0 = Disabled 1 = Read logic coil status 2 = Read discrete input status 3 = Read output registers (holding) 4 = Read input registers 5 = Force single logic coil 6 = Preset single holding register 15 = Force multiple logic coils 16 = Preset multiple holding registers

171 Slave Register 25 R/W User UINT16 2 0-65535 0 1.00 Sets the device register

172 Master Register 25 R/W User UINT8 1 0-200 0 1.00 Sets the App module register

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Parm

#

173 Number of Registers 25 R/W User UINT8 1 0-255 0 1.00 Sets the number of registers to

174 Conversion Code 25 R/W User UINT8 1 0, 25-30, 57-74 0 1.00 Sets the conversion code:

Name Access

System or

User Update

Data

Type

Length Range Default Version

Description of functionality and

meaning of values

request from the device

0 = No Conversion 25 = Any type to FLOAT 26 = Any type to signed short 27 = Any type to signed long 28 = Any type to unsigned short 29 = Any type to unsigned long 30 = Any type to unsigned byte 57 = Any type to signed long 0,1,2,3 58 = Any type to signed long 1,0,3,2 59 = Any type to signed long 2,3,0,1 60 = Any type to signed long 3,2,1,0 61 = Any type to unsigned long 0,1,2,3 62 = Any type to unsigned long 1,0,3,2 63 = Any type to unsigned long 2,3,0,1 64 = Any type to unsigned long 3,2,1,0 65-72 = IEEE FLOATing Point Number

Revised May-2016 61

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Point Type 69/248: Modbus Master Table

Parm

#

175 Comm Status 25 R System UINT8 1 0-8, 128-131,

Name Access

System or

User Update

Data

Type

Length Range Default Version

144-145

Description of functionality and

meaning of values

0 1.00 Shows the last poll status.

0 = Inactive 1 = Timeout Error 2 = Addr Check 3 = Function Code Error 4 = Num of Exp Bytes 5 = Rcv Slave Resp 6 = CRC/LRC Check 7 = CRC/LRC Check 8 = Valid Slave Resp 128 = Write Data Err 129 = Acc Dev Data 130 = Master Table Error 131 = Trans Timeout 144 = Tx/Rx Buff Ovr 145 = Invalid Func #

62 Revised May-2016

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

5.3 Point Type 70/249: Modbus Registers

Point type 70 (for FB107) or 249 (for ROC800) contains the registers (50 per logical) that the module uses to store data it reads from and writes to slave devices. This point type has four logicals.

Point Type 70/249: Modbus Registers

Parm

#

0 Point Tag ID R/W User AC10 10

1 Register Value U32 1 R/W User UINT32 4 0-4294967295 0.0 1.00 Shows or sets the integer value

2 Register Value Float 1 R/W User FLOAT 4 Any valid IEEE

3 Register Tag 1 R/W User AC10 10

...

Name Access

System or

User Update

Data

Type

Length Range Default

0x20 → 0x7E for

each ASCII

character

floating point

0x20 → 0x7E for

each ASCII

character

"Registers

X", where X

is the logical

0.0 1.00 Shows or sets the floating value

“” 1.00 Sets the description for register 1.

Version Description of functionality and

meaning of values

1.00 Sets the point type description.

for register number 1.

Note: Parameters 1-3 repeat up to 50 times, once for each Master Table entry.

148 Register Value U32

50

149 Register Value

FLOAT 50

150 Register Tag 50 R/W User AC10 10

R/W User UINT32 4 0-4294967295 0.0 1.00 Sets the holding parameter for the

value of register 50 if register is an integer (else 0).

R/W User FLOAT 4 Any valid IEEE

floating point

0x20 → 0x7E for

each ASCII

character

0.0 1.00 Sets the holding parameter for the value of register 50 if register is floating point (else 0.0).

“” 1.00 Sets the description for register

50.

Revised May-2016 63

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

5.4 Point Type 71/250: Modbus Expanded Registers

Point type 71 (for FB107) or 250 (for ROC800) contains the expanded registers. This point type has twenty-five logicals.

Point Type 71/250: Modbus Expanded Registers

Parm

#

0 Point Tag ID R/W User AC10 10

1 Expanded Register

2 Parent Register R/W User UINT8 1 1-200 0 1.00 Shows or sets which register this

3 Float Value R System FLOAT 4 Any valid IEEE

4 Float Manual Value R/W User FLOAT 4 Any valid IEEE

5 Float Alarm Low

6 Float Alarm High

7 Float Alarm

8 Integer Value R/W User UINT32 4 0-4294967295 0 1.00 Shows the live value read from

9 Integer Manual Value R/W User UINT32 4 0-4294967295 0 1.00 Shows or sets the value for the

10 Integer Alarm Low

11 Integer Alarm High

Name Access

R/W User UINT8 1 0-3 0 1.00 Shows or sets the I/O type for the

Type

R/W User FLOAT 4 Any valid IEEE

Value

R/W User FLOAT 4 Any valid IEEE

Value

R/W User FLOAT 4 Any valid IEEE

Deadband Value

R/W User UINT32 4 0-4294967295 0 1.00 Shows or sets the integer alarm

Value

R/W User UINT32 4 0-4294967295 110 1.00 Sets the integer alarm high value.

Value

System or

User Update

Data

Type

Length Range Default

0x20 → 0x7E for

each ASCII

character

floating point

"Exp Reg X",

where X is

the logical

0.0 1.00 Shows the live value read from

0.0 1.00 Shows or sets the value for the

-10.0 1.00 Shows or sets the float alarm low

110.0 1.00 Shows or sets the float alarm high

2.0 1.00 Shows or sets the float alarm

Version Description of functionality and

meaning of values

1.00 Shows or sets the Point Type description.

expanded register:

0 = Disabled 1 = Floating Point 2 = Integer 3 = Digital

expanded register maps to.

the register, in floating point form.

register in floating point form.

value.

deadband value.

the register, in integer form.

register in integer form.

low value.

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Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

Parm

#

12 Integer Alarm

13 Units R/W User AC10 10 0x20 – 0x7E for

14 Digital Status R System UINT8 1 0-1 0 1.00 Shows if the digital status is active

15 Digital Manual Status R/W User UINT8 1 0-1 0 1.00 Sets status for the register in

16 Alarm Mode R/W User UINT8 1 0-15 0 1.00 Configures the alarm mode:

17 Alarm Status R System U8 1 0-255 0 1.00 Shows the alarm status:

Name Access

R/W User UINT32 4 0-4294967295 2 1.00 Sets integer alarm deadband

Deadband Value

System or

User Update

Data

Type

Length Range Default

“” 1.00 Sets string to indicate the units of

each ASCII

character

Version Description of functionality and

meaning of values

value.

the value.

or not.

0 = Off 1 = On

digital form.

0 = All alarms disabled Bit 0 = Floating point alarm enabled Bit 1 = Integer alarm enabled Bit 2-3 = Digital alarm bits Bit 2 (4) = Digital alarm on set Bit 3 (8) = Digital alarm on clear Bit 2 & 3 (12) = Digital alarm on change

0 = No alarm Bit 0 = Low Alarm Bit 1 = Low Low Alarm (unused) Bit 2 = High Alarm Bit 3 = High High Alarm (unused) Bit 4 = Rate Alarm (unused) Bit 5 = Digital Alarm Bit 6 = Point Fail Alarm (unused) Bit 7 = Scanning Disabled (unused)

Revised May-2016 65

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Point Type 71/250: Modbus Expanded Registers

Parm

#

18 Exp Reg UI Flags R/W User UINT8 1 0-255 0 1.00 Configures the user interface

Name Access

System or

User Update

Data

Type

Length Range Default

Version Description of functionality and

meaning of values

flags:

Bit 0 = Float manual override Bit 1 = Float clipping Bit 2 = Int manual override Bit 3 = Int clipping Bit 4 = Digital override Bit 5 = Digital invert Bit 6 = unused Bit 7 = Show Int as bits

66 Revised May-2016

Modbus Express Module Instruction Manual (ROC800-Series and FloBoss 107)

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Revised May-2016 67

Modbus Express Instruction Manual (ROC800-Series and FloBoss 107)

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Remote Automation Solutions

Remote Automation Solutions Modbus Express Module Instruction Manual (for ROC800-Series and FloBoss 107 Controllers) Manuals & Guides

Specifications and Main Features

Frequently Asked Questions

User Manual

Revision Tracking Sheet

Contents

Chapter 1 – Introduction

1.1 Scope and Organization

1.2 Product Overview

1.2.1 Supported Devices

1.2.2 Module and Device Wiring

1.3 Module Requirements

Chapter 2 – Installation

2.1 Installing the Application Module

2.2 Updating the Application Module

2.3 MPU Loading Threshold (ROC800)

Chapter 3 – Configuration

3.1 Setup Screen

3.2 Master Table Screen

3.3 Registers Screen

3.4 Expanded Regs Screen

3.5 Saving the Configuration

Chapter 4 – Usage

4.1 Quick Start Procedures

4.2 Best Practices

Chapter 5 – Reference Materials

5.1 Point Type 68/247: Modbus Express Setup

5.2 Point Type 69/248: Modbus Master Table

5.3 Point Type 70/249: Modbus Registers

5.4 Point Type 71/250: Modbus Expanded Registers