ADLINK Technology ND-6021 User manual

ND-6021
ND-6024
Analog Input Modules
User’s Guide

©Copyright 1996~2001 ADLink Technology Inc.
All Rights Reserved.
Manual first edition: January 7, 1996
Manual Rev. 2.0: December 5, 1997
Manual Rev. 3.00: October 31, 1998
Manual Rev. 4.00: February 21.2001
Theinformationin this document is subject to change without prior notice in
order to improve reliability, design and function and does not represent a
commitment on the part of the manufacturer.
In no event will the manufacturer be liable to direct, indirect, special,
incidental, or consequential damages arising out of the use or inability to
use the product or documentation, even if advised of the possibility of such
damages.
This document contains proprietary information protected by copyright. All
rights are reserved. No part of this manual may be reproduced by any
mechanical, electronic, or other means in any form without prior written
permission of the manufacturer.
Trademarks
NuDAM is registered trademarks of ADLink Technology Inc.,
Otherproductnamesmentioned herein are used for identification purposes
onlyandmaybetrademarksand/orregisteredtrademarksoftheirrespective
companies.

Contents i
Contents
1. INTRODUCTION............................................................................................1-1
1. 1. ABOUT THE NUDAM ANALOG OUTPUT MODULES1-1
1. 2. OVERVIEW OF NUDAM-6021 1-1
1. 3. OVERVIEW OF NUDAM-6024 1-5
2. INITIALIZATION & INSTALLATION.......................................................2-1
2. 1. SOFTWARE INSTALLATION 2-1
2. 2. INITIALIZING A BRAND-NEW MODULE 2-1
2. 3. INSTALL A NEW NUDAM TO A EXISTING NETWORK 2-3
2. 4. APPLICATION WIRING FOR NUDAM-6021 2-4
2. 5. APPLICATION WIRING FOR NUDAM-6024 2-5
3. COMMAND SET.............................................................................................3-1
3. 1. COMMAND AND RESPONSE 3-1
3. 2. SUMMARY OF COMMAND SET 3-4
3. 3. SET CONFIGURATION 3-6
3. 4. READ CONFIGURATION 3-9
3. 5. READ MODULE NAME 3-10
3. 6. READ FIRMWARE VERSION 3-11
3. 7. RESET STATUS 3-12
3. 8. SYNCHRONIZED SAMPLING (6024 ONLY)3-13
3. 9. READ SYNCHRONIZED DATA (6024 ONLY)3-14
3. 10. DIGITAL INPUT (6024 ONLY)3-15
3. 11. ANALOG DATA OUTPUT 3-16
3. 12. 4MA OFFSET CALIBRATION 3-18
3. 13. 20MA CALIBRATION 3-19
3. 14. TRIM CALIBRATION 3-20
3. 15. SAVE POWER ON ANALOG OUTPUT VALUE 3-21
3. 16. LAST VALUE READBACK 3-22
3. 17. CURRENT READBACK 3-23
3. 18. READ LEADING CODE SETTING 3-24
3. 19.CHANGE LEADING CODE SETTING 3-26
3. 20. SET HOST WATCHDOG TIMER & SAFETY VALUE 3-28

ii Contents
3. 21. READ HOST WATCHDOG TIMER & SAFETY VALUE 3-31
3. 22. HOST IS OK 3-33
4. DATA FORMAT.............................................................................................4-1
4. 1. UNIT CONVERSION 4-1
4. 2. ENGINEERING UNITS 4-1
4. 3. PERCENT OF FSR 4-2
4. 4. HEXDECIMAL FORMAT 4-3
4. 5. SUMMARY OF DATA FORMAT 4-4
5. ANALOG OUTPUT CALIBRATION..........................................................5-1
5. 1. CALIBRATION 5-1
5. 2. ANALOG OUTPUT MODULE CALIBRATION 5-1

Initialization &Installation 1-1
1. Introduction
1. 1.About the NuDAM Analog Output Modules
The NuDAM provides an analog output modules which can convert
the digital command to analog. The basic features of each module
are shown here.
•NuDAM-6021 : analog signal output module with safety functions
•NuDAM-6024 : 4 channel analog output module
1. 2.Overview of NuDAM-6021
What is NuDAM-6021 ?
ND-6021 is an analog signal output module. It receives the digital
command from host computer through RS-485 network. The format
of the digital value can be engineering units, hexdecimal format or
percentage of full-scale range(FSR). A microprocessor is used to
convert the digital command to digital value to send to DAC. The DAC
converts the digital value into analog form. The analog output can be
either voltage or current output.
The ND-6021 is designed for safety. It provides many safety functions
such as isolation, watchdog, and power on safe value. The
opto-isolators provide 5000Vrms isolation voltage to isolate the digital
section and the remote controlled analog equipments. The damage
of power surges is avoided.
Another safety fucntion is the watchdog. Whenever the host is loss
contact with the remoted NuDAM module, or the micro-processor is
down, the module will reset itself and send the safety value to the
analog output therefore the industry safety is guarantee. The safety
value / power-up value can be set by configuration software.

1-2Initialization &Installation
The analog output can be readback through the module‘s ADC.
which can monitor the ’real‘ output of the device. The host can
check the digital command and the real output to avoid short circuits.
The slew rate of the output signal is also controllable by software.
Features of NuDAM-6021
•One uni-polar analog output channel
•Two sets of differential current and voltage output terminals
•Versatile digital signal format
•Programmable host watchdog timer for host failure protection
•Internal watchdog timer for device failure protection
•Easy programming by software
•Easy installation and wiring
Specifications of NuDAM-6021
²Interface
•Interface : RS-485, 2 wires
•Speed (bps) : 1200, 2400, 4800, 9600, 19.2K, 38.4K
²Analog Output
•Singal Output type: Differential type
•Resolution: 12 bits
•Accuracy: ±0.1% of FSR for current output
±0.2% of FSR for voltage output
•Unit Convertion: V or mA
•Output range:
Voltage output: 0 to 10 V (uni-polar)
Current output: 0 to 20 mA
4 to 20 mA
•Maximum Sampling Rate: 100 samples /sec
•Slew rate:
Voltage output: 0.0625 to 64 V/sec
Current output: 0.125 to 128 mA/sec
•Internal Current Load Resistor: 500Ω(%1)
²Readback Analog Input
•Accuracy: ±0.2% of FSR
²Isolation

Initialization &Installation 1-3
•Isolation voltage: 5000 Vrms
²Watchdog Function
•Module internal watchdog timer : 150 ms
•Power failure threshold : 4.65 V
•Host programmable watchdog : 100 ms ~ 25.500 sec
²Power
•Power supply : +10V to +30V
•Power consumption : 1.0W
Pin Definitions of ND-6021
Pin # Signal Name Description
1+IOUT Positive Current Output Terminal
2-IOUT Negative Current OutputTerminal
3+VOUT Positive Voltage Output Terminal
4-VOUT Negative Voltage Output Terminal
6Default* Initial state setting
7(Y) DATA+ RS-485 series signal, positive
8(G) DATA-RS-485 series signal, negative
9(R) +Vs Power supply, +10V~+30V
10 (B) GND Ground

1-4Initialization &Installation
A Look at ND-6021 & Pin Assignment
ND-6021
(Y)DATA+
(G)DATA-
(R)+Vs (B)GND
Analog Output
(Current/Voltage)
1
10
+IOUT
-IOUT
+VOUT
-VOUT
DEFAULT*
Code Output Range
30
31
32
0 ~20 mA
4 ~ 20 mA
0 ~ 10V
11 20

Initialization &Installation 1-5
Functional Block Diagram of ND-6021
Data-
Data+ RS-485
Rec/DRv Micro
Processor
RS-485
Terminator EEPROM
Watchdog / Power Failure
Supervisor
*Defalut Setting
(1 bit Digital In)
Photo
Isolators
DAC
(12 bits)
DC to DC
Convertor
Voltage Output
VOUT +
VOUT -
V to I IOUT +
IOUT -
Power
Regulator
+10V ~ +30 V
GND +5V
GND Isolated Power
Isolated Ground
Current Output
1. 3.Overview of NuDAM-6024
What is NuDAM-6024 ?
ND-6024 is a 4 channel bipolar analog signal output module. It
receives the digital command from host computer through RS-485
network. A microprocessor is used to convert the digital command to
digital value to send to DAC. The DAC converts the digital value into
analog form.
The ND-6024 is designed for safety. It provides many safety functions
such as isolation, watchdog, and power on safe value. The
opto-isolators provide 5000Vrms isolation voltage to isolate the digital
section and the remote controlled analog equipments. The damage
of power surges is avoided.

1-6Initialization &Installation
Another safety fucntion is the watchdog. Whenever the host is loss
contact with the remoted NuDAM module, or the micro-processor is
down, the module will reset itself and send the safety value to the
analog output therefore the industry safety is guarantee. The safety
value / power-up value can be set by configuration software.
Features of NuDAM-6024
•4 channel bipolar analog output
•Programmable host watchdog timer for host failure protection
•Internal watchdog timer for device failure protection
•Easy programming by software
•Easy installation and wiring
Specifications of NuDAM-6024
²Interface
•Interface : RS-485, 2 wires
•Speed (bps) : 1200, 2400, 4800, 9600, 19.2K, 38.4K
²Analog Output
•Channel numbers : 4
•Singal Output type: Differential output
•Voltage Output: ±10V
•Resolution: 12-bit resolution
•Accuracy: ±1/2 LSB
•Gain Drift: ±5ppm/°C
²Digital Input
•Channel numbers : 7
•Logical level 0: +2V max.
Logical Level 1: +3.5V ~ +30V
²Isolation
•Isolation voltage: 5000 Vrms
²Watchdog Function
•Module internal watchdog timer : 150 ms
•Power failure threshold : 4.65 V
•Host programmable watchdog : 100 ms ~ 25.500 sec
²Power
•Power supply : +10V to +30V
•Power consumption : 2.5W