FieldServer FS-8700-15 User Manual

A Sierra Monitor Company

Driver Manual

(Supplement to the FieldServer Instruction Manual)

FS-8700-15 Modbus Daniels

APPLICABILITY & EFFECTIVITY

Effective for all systems manufactured after May 1, 2001

FS-8700-15 Modbus Daniels Manual Index

TABLE OF CONTENTS

1. Modbus Daniels Description............................................................................................1

2. Driver Scope of Supply..................................................................................................... 1

2.1. Supplied by FieldServer Technologies for this driver ...................................................1

2.2. Provided by the Supplier of 3rd Party Equipment..........................................................1

2.2.1. Required 3rd Party Configuration ...............................................................................1

3. Hardware Connections ..................................................................................................... 2

3.1. Hardware Connection Tips / Hints................................Error! Bookmark not defined.

4. Configuring the FieldServer as a Modbus Daniels Client .............................................2

4.1. Data Arrays/Descriptors ...............................................................................................3

4.2. Client Side Connection Descriptions ............................................................................3

4.3. Client Side Node Descriptors .......................................................................................4

4.4. Client Side Map Descriptors .........................................................................................5

4.4.1. FieldServer Related Map Descriptor Parameters...................................................... 5

4.4.2. Driver Related Map Descriptor Parameters ..............................................................5

4.4.3. Timing Parameters .................................................................................................... 5

4.4.4. Map Descriptor Example. .......................................................................................... 6

5. Advanced Topics ..............................................................................................................7

6. Driver Notes.......................................................................................................................7

7. Troubleshooting tips ............................................................Error! Bookmark not defined.

7.1. Connection Tips & Hints ............................................... Error! Bookmark not defined.

8. Revision History................................................................................................................7

FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com

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FS-8700-15 Modbus Daniels Manual Page 1 of 7

1. Modbus Daniels Description

The Modbus Daniels driver allows the FieldServer to transfer data to and from devices over
either RS-232 or RS-485 using Modbus Daniels protocol. The FieldServer can only emulate a
Client.

Modbus Daniels is an inclusion into Modbus ASCII, allowing floats to be used. Modbus Daniels
is designed to support floats in the address range 7000 to 7999. The "Double" data type is not
supported. Other standard Modbus data types are supported.

Max Nodes Supported

FieldServer Mode Nodes Comments

The maximum achievable number of devices on the

Client 255

network may be less depending on device loading and
network speed characteristics. Only one client device
allowed on multidrop systems.

2. Driver Scope of Supply

2.1. Supplied by FieldServer Technologies for this driver

FieldServer Technologies
PART #

FS-8915-10 UTP cable (7 foot) for RS_232 use
FS-8917-01 RJ45 to DB25M connection adapter
SPA59132 RS-485 connection adapter

- Driver Manual.

Description

2.2. Provided by the Supplier of 3rd Party Equipment

2.2.1. Required 3rd Party Configuration

The Modbus Daniels device must be set to use Modbus ASCII protocol.

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FS-8700-15 Modbus Daniels Manual Page 2 of 7

3. Hardware Connections

The FieldServer is connected to the Modbus Daniels device as shown in the connection
drawing.

Configure the Modbus Daniels device according to manufacturer’s instructions.

4. Configuring the FieldServer as a Modbus Daniels Client

For a detailed discussion on FieldServer configuration, please refer to the FieldServer
Configuration Manual. The information that follows describes how to expand upon the

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FS-8700-15 Modbus Daniels Manual Page 3 of 7

factory defaults provided in the configuration files included with the FieldServer (See “.csv”
sample files provided with the FS).

This section documents and describes the parameters necessary for configuring the
FieldServer to communicate with a Modbus Daniels Server.

4.1. Data Arrays/Descriptors

The configuration file tells the FieldServer about its interfaces, and the routing of data
required. In order to enable the FieldServer for Modbus Daniels communications, the driver
independent FieldServer buffers need to be declared in the “Data Arrays” section, the
destination device addresses need to be declared in the “Client Side Nodes” section, and
the data required from the servers needs to be mapped in the “Client Side Map Descriptors”
section. Details on how to do this can be found below.

Note that in the tables, * indicates an optional parameter, with the bold legal value being the
default.

Section Title

Data_Arrays

Column Title Function Legal Values

Data_Array_Name Provide name for Data Array

Provide data format. Each Data

Data_Array_Format

Data_Array_Length

Example

// Data Arrays
Data_Arrays
Data_Array_Name, Data_Format, Data_Array_Length,
DA_AI_01, UInt16, 200
DA_AO_01, UInt16, 200
DA_DI_01, Bit, 200
DA_DO_01, Bit, 200

Array can only take on one
format.

Number of Data Objects. Must be
larger than the data storage area
required by the Map Descriptors
for the data being placed in this
array.

Up to 15 alphanumeric
characters
Float, Bit, UInt16,
SInt16, Packed_Bit,
Byte, Packed_Byte,
Swapped_Byte

1-10,000

4.2. Client Side Connection Descriptions

Section Title

Connections

Column Title Function Legal Values

Port Specify which port the FS-X40 Serves: P1-P8, R1-R2

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FS-8700-15 Modbus Daniels Manual Page 4 of 7

device is connected to the

FS-X20 Serves: Serial Port

FieldServer

Protocol Specify protocol used Modbus_Daniels

Baud* Specify baud rate

Parity* Specify parity

110 – 115200, standard baud
rates only, 9600
Even, Odd, None, Mark,

Space
Data_Bits* Specify data bits 7, 8
Stop_Bits* Specify stop bits

Handshaking*

Specify hardware
handshaking

1

RTS, RTS/CTS, None

Poll _Delay* Time between internal polls 0-32000 seconds, 1 second

Example

// Client Side Connections

Connections
Port, Protocol, Baud, Parity, Handshaking, Poll_Delay
P1, Modbus_Daniels, 9600, Even, None, 0.100s

4.3. Client Side Node Descriptors

Section Title

Nodes

Column Title Function Legal Values

Node_Name Provide name for node

Node_ID

Modbus station address of
physical server node

Protocol Specify protocol used Modbus_Daniels

Connection

Specify which port the device is
connected to the FieldServer

Example

// Client Side Nodes

Nodes
Node_Name, Node_ID, Protocol, Connection
PLC 1, 1, Modbus_Daniels, P1

Up to 32 alphanumeric
characters

1-255

FS-X40 Serves: P1-P8, R1-R2
FS-X20 Serves: Serial Port

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FS-8700-15 Modbus Daniels Manual Page 5 of 7

4.4. Client Side Map Descriptors

4.4.1. FieldServer Related Map Descriptor Parameters

Section Title

Map Descriptors

Column Title Function Legal Values

Map_Descriptor_Name

Data_Array_Name

Data_Array_Offset

Function

Name of this Map
Descriptor
Name of Data Array
where data is to be
stored in the
FieldServer
Starting location in
Data Array
Function of Client Map
Descriptor

Up to 32 alphanumeric
characters

One of the Data Array
names from “Data Array”
section above

0 to maximum specified in
“Data Array” section above

RDBC, WRBC, WRBX

4.4.2. Driver Related Map Descriptor Parameters

Section Title

Map Descriptors

Column Title Function Legal Values

Node_Name

Data_Type* Data type Register, Coil, AI, DI

Length

Address

Data_Array_Low_Scale*

Data_Array_High_Scale*

Node_Low_Scale*

Node_High_Scale*

Name of Node to fetch
data from

Length of Map
Descriptor

Starting address of
read block

Scaling zero in Data
Array

Scaling max in Data
Array

Scaling zero in
Connected Node
Scaling max in
Connected Node

One of the node names
specified in “Client Node
Descriptor” above

1-125 (Register, AI)
1-800 (Coil, DI)
0000 – 6999 ( Coil )
7000 – 7999 ( Float )
10000 ( DI )
30000 ( AI )
40000 – 49999 ( Register)

-32767 to 32767, default 0

-32767 to 32767, default
100

-32767 to 32767, default 0

-32767 to 32767, default

100

4.4.3. Timing Parameters

Section Title

Map Descriptors

Column Title Function Legal Values

Scan_Interval Rate at which data is

polled

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≥0.001s

FS-8700-15 Modbus Daniels Manual Page 6 of 7

4.4.4. Map Descriptor Example.

Section Title
Map Descriptors
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Node_Name, Address, Length, Scan_Interval
CMD_AI, DA_AI, 0, RDBC, PLC 1, 30000, 20, 1s

The data array
where the read
data will be
stored is
specified here.
This data array
and its format
must be
specified under
the data arrays
section.

Note the use of
the RDBC
function here
which will
cause this map
descriptor to
continuously
read data every
scan interval
from the
remote device.

The remote
Modbus Daniels
device is
specified here
with the node
name previously
declared under
the nodes
section.

FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com

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FS-8700-15 Modbus Daniels Manual Page 7 of 7

5. Advanced Topics

None.

6. Driver Notes

None.

7. Revision History

Date

10/03/03 1.00d 0 JD Releasing

10/13/03 1.00d 1 MF

12/09/03 1.00d 2 DR

12/23/03 1.00d 3 JD Releasing

Driver
Version

Document
Revision

Resp Comment

Updating formatting. Adding Description
information – DUR0212
DUR0220, updated to new format, indicate
address ranges and data types supported

FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com

Tel: [phone] Fax: [phone] Toll_Free: 888-509-1970 email: [e-mail]