Flintec DAD 141.1 Manual do Utilizador descarregar pdf (Página 8)

DAD 141.1 Technical Manual, Rev. 2.2 - February 2014

Page 8 of 54

4. Communications and Getting started

4.1. Serial Interface

Communicating with the digital amplifier DAD 141.1 is carried out via serial RS 422/485 port.

The data format is the familiar 8/N/1 structure (8 data bits, no parity, 1 stop bit).

Available baud rates of RS 422/485 port are as follows: 9600, 19200, 38400, 57600 or 115200 baud.

Factory default: 115200 baud

4.2. Command Language

The command set of the DAD 141.1 is based on a simple ASCII format (2 capital letters). This enables the user

to setup the device, get results or check parameters.

Example: DAD 141.1 is connected via the RS 485 port to a PC / PLC system. You want to get the identity,

firmware version or net weight .

Remark: In this manual means: “_“ Space in the setup command and “ “ Enter (CR); sending of a linefeed

(LF) is not required and will be ignored by the device if neccessary.

Master (PC / SPS) sends

Slave (DAD 141.1) responds

Meaning

ID

D:1410

identity of the active device

IV

V:0101

Firmware version of the active device

GN

N+123.45

Net weight with algebraic sign/floating poin

4.3. Baud Rate

For baud rate setup use command BR, see chapter 10.10.3.

Factory default: 115200 baud

4.4. Getting Started Via RS422/485

You will require:

 PC or PLC with a RS 422/485 communication port

 A load cell / scale with test weights or a load cell simulator

 A 12-24 VDC power supply capable of delivering approximately 200mA for each DAD 141.1

and load cell(s)

 One or more DAD 141.1

 A suitable ASCII communication software **

Refer to the wiring diagrams in chapter 5.

You can easily communicate between a PC and a DAD 141.1 using programs such as Procomm, Telemate,

Kermit, HyperTerminal or HTerm etc.

Additional the powerful software DOP 4 with graphical user interface and oscilloscope function for the operating

systems Windows XP/Vista/7/8 is available.

Hint:

A download of a new firmware version can be done with the software H&B programmer 3.0 (or later). The

download can be done via RS485 at a baud rate of 115200 or via Ethernet interface.

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