Datataker DT80, DT81, DT82, DT85, DT80LM3 User guide
...
Intelligent Data Logging Products
DT80 Range
DT80/81/82/85
Series 1,2,3 & 4
Includes CEM20
User's Manual
A complete guide to:
• data acquisition
• data logging
• programming
• sensor wiring
• communications
DT80 Range User’s Manual
Domain
Applicable Standards
IC
CFR47 FCC Part 15, Subpart B (Class A)
China RoHs 2 – models without WiFi / Modem
Refer to China RoHs table below
© Copyright 2005-2017 Thermo Fisher Scientific Australia Pty Ltd ABN 52 058 390 917
UM-0085-B10
Warranty
Thermo Fisher Scientific Australia Pty Ltd (“Thermo Fisher”) warrants the instruments it manufactures against defects in
either the materials or the workmanship for a period of three years from the date of delivery to the original customer.
This warranty is limited to, and purchaser’s sole remedy for a breach of this warranty is, the replacement or repair of
such defects, without charge, when the instrument is returned to Thermo Fisher or to one of its authorized dealers
pursuant to Thermo Fisher’s return policy procedures.
The obligations set forth above shall be void with respect to any damage to the instrument resulting from accident,
abuse, improper implementation or use, lack of reasonable care, loss of parts, force majeure, or any other third party
cause beyond Thermo Fisher’s control. Any installation, maintenance, repair, service, or alteration to or of, or other
tampering with, the instruments performed by any person or entity other than Thermo Fisher without its prior written
approval, or any use of replacement parts not supplied by Thermo Fisher, shall immediately void and cancel all
warranties with respect to the affected instruments.
Thermo Fisher shall not be liable for any incidental, indirect, special, punitive or consequential loss or damages resulting
from or arising out of the use of the instrument, In no event shall Thermo Fisher’s liability with respect to the instrument,
the use thereof, this warranty statement or any cause of action related thereto, under any circumstances exceed the
purchase price of the instrument actually paid by purchaser.
Where Thermo Fisher supplies to the customer equipment or items manufactured by a third party, then the warranty
provided by the third party manufacturer shall pass through to purchaser, but only to the extent allowed by the original
manufacturer or third party supplier.
EXCEPT AS EXPRESSLY PROVIDED IN THIS WARRANTY STATEMENT, THERMO FISHER DISCLAIMS ALL
OTHER WARRANTIES, WHETHER EXPRESS OR IMPLIED, ORAL OR WRITTEN, WITH RESPECT TO THE
INSTRUMENTS, INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR ANY PARTICULAR PURPOSE. THERMO FISHER DOES NOT WARRANT THAT THE INSTRUMENTS
ARE ERROR-FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT. ANY ADVICE OR ASSISTANCE
FURNISHED BY THERMO FISHER IN RELATION TO THE INSTRUMENTS SHALL NOT GIVE RISE TO ANY
WARRANTY OR GUARANTEE OF ANY KIND, AND SHALL NOT CONSTITUTE A WAIVER BY THERMO FISHER.
The Purchaser shall be solely responsible for complying with all applicable local, state and Federal laws with respect to
the installation, use and implementation of the equipment.
Trademarks
dataTaker is a registered trademark of Thermo Fisher Scientific Australia Pty Ltd
Adobe® Flash ® Player. Copyright © 1996 – 2006 Adobe Systems Incorporated. All Rights Reserved. Protected by U.S.
Patent 6,879,327; Patents Pending in the United States and other countries. Adobe and Flash are either trademarks or
registered trademarks in the United States and/or other countries.
All other brand and product names are trademarks or registered trademarks of their respective holders.
Regulatory Notices
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
Please refer to the following table and information for compliance requirements of the DT80 Series, CEM20 and internal
devices.
Safety (Product with Integrated Modem)
EMC
EN 60950.1:2006 +Amdt 11(2009), A1(2010), A12(2011) & A2(2013)
AS/NZS 60950.1:2011 +Amdt 1(2012)
EN 55022:2010 + AC:2011
EN 55024:2010
EN 61000-3-2: Ed. 4.0 (2014)
EN 61000-3-3: Ed. 3.0 (2013)
ETSI EN 301 489-1 V1.9.2 (2011-09)
FCC CFR47 FCC Part 15, Subpart B (Class A)
UM-0085-B09 DT80 Range User Manual Page 2
RG
FCC / IC Statements
零件或部件名称
有害物质或元素
铅
汞
镉
Hexavalent
六价铬
Polybrominated
多溴联苯
Polybrominated
多溴二苯醚
0.1
0.01)
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority
to operate the equipment.
Cet équipement a été testé et reconnu co nforme aux limites d'un appareil numérique de classe A, conformément à la
partie 15 des règles de la FCC. Ces limit es sont conçues pour fournir une prot ec tion raisonnable contre les interférences
nuisibles lorsque l'équipemen t est utilisé dans un environnement c ommercial. Cet équipement génère, utilise et peut
émettre de l'énergie radiofréquenc e et, s'il n'est pas installé et utilisé conformément au manuel d'instr uctions, peut
causer des interférences nuisibles aux communications radio. Le fonctionnement de cet équipement dans une zone
résidentielle est susceptible de causer des interférences nuisibles , auquel cas l'utilisateur devr a c orriger l'interférence à
ses propres frais.
Les changements ou modifications non expressément approuvés par la par tie responsable de la conformité pourraient
annuler l'autorisation de l'utilisateur d'utiliser l'équipement.
Dependent on model the product may contain
• Modem (DT80LM3, DT82EM3, DT85M3, DT85GLM3) – FCC ID: RI7HE910 / IC ID: 5131A-HE910
• WiFi Module (DT80W, DT80GW, DT85W, DT85GW) – FCC ID: XF6-RS9113SB / IC ID: 8407A-RS9113SB
China RoHs
Part or
Component
Name
Resistors
电阻
Standoffs
支座
Connectors
连接器
Fasteners
紧固件
Potentiometers
电位器
Memory Stick
记忆棒
Integrated Circuits
集成电路
Lead (Pb)
X O O O O O
X O O O O O
X O O O O O
X O O O O O
X O O O O O
X O O O O O
X O O O O O
Mercury (Hg)
Cadmium (Cd)
Hazardous Substances
Chromium (Cr(VI))
Biphenyls (PBB)
Diphenyl Ethers (PBDE)
This table is prepared in accordance with the provisions of SJ/T 11364.
本表格依据SJ/T 11364 的规定编制。
O : Indicates that the concentration of the hazardous substance in all homogeneous materials of the part is below the relevant
threshold of the GB/T 26572 standard.
O : 表示该有害物质在该部件所有均质材料中的含量均在 GB/T 26572 规定的限量要求以下。
X : Indicates that the concentration of the hazardous substance in at least one homogeneous material of the part is above the
relevant threshold of the GB/T 26572 standard.
X : 表示该有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 规定的限量要求。
Marking Standard SJ/T 11364 requires this chart format for listed parts or components that exceed a maximum concentrated limit.
As a service to our customers, we are using the chart format to provide information regarding these part or components.
标识标准SJ / T 11364要求此图表格式列出超过最大浓度限制的零件或组件。作为对我们客户的服务，我们使用此图表格式提供有关
这些零件或组件的信息。
(Concentration limits are 0.1% for Lead, Mercury, Hexavalent Chromium, Polybrominated Biphenyls, Polybrominated Diphenyl
Ethers (excluding decaBDE), and 0.01% for Cadmium)
（铅，汞，六价铬，多溴联苯，多溴二苯醚（不包含十溴二苯醚）的浓度限制为
％，以及镉为
Environment Friendly Use Period (EFUP)
环保使用期限（EFUP）
UM-0085-B09 DT80 Range User Manual Page 3
RG
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority
to operate the equipment.
Disposal of Product and Batteries
This product is subject to the EU Directive 2012/19/EU for Waste Electrical and Electronic Equipment
(WEEE). As such product must not be disposed of in general waste facilities. Please refer to local
regulations or contact your distributor on he to dispose this product in an environmentally friendly
manner.
Dispose of used batteries via an appropriate recycling facility only.
Warning
dataTaker products are not authorized for use as critical components in any life support system where failure of the
product is likely to affect the system’s safety or effectiveness.
Important: Firmware Version Covered in This Manual
This version of the dataTaker DT80 Range User’s Manual (UM-0085-B10) applies to the DT80 range of data loggers
(DT80, DT80G, DT80L, DT80LM3, DT80GL, DT80W, DT82E, DT82EM3, DT82I, DT85, DT85G, DT85L, DT85LM3,
DT85GL, DT85W, DT85GW, and DT85GLM3, Series 1, 2, 3 and 4) running Version 9.20 firmware.
UM-0085-B09 DT80 Range User Manual Page 4
RG
Content
Content ...................................................................................................................... 5
Part A – The DT80 ...................................................................................... 14
DT80 Concepts ........................................................................................................ 14
What is the DT80? ...................................................................................................................................... 14
The DT80 Product Family ........................................................................................................................... 14
DT80-Friendly Software .............................................................................................................................. 18
About This Manual ...................................................................................................................................... 18
A Tour of the DT80's Interfaces .................................................................................................................. 18
Getting Started ............................................................................................................................................ 19
Sending Commands.................................................................................................................................... 20
Getting Help ................................................................................................................................................ 21
Designing Your Data Logging System ........................................................................................................ 21
Measurements ......................................................................................................... 22
What can the DT80 Measure? .................................................................................................................... 22
Analog Channels – Introduction .................................................................................................................. 22
Digital Channels – Introduction ................................................................................................................... 25
Serial Channels – Introduction .................................................................................................................... 25
Programming the DT80 ........................................................................................... 26
Typical Workflow ......................................................................................................................................... 26
USB memory devices .................................................................................................................................. 28
Format of Returned Data ........................................................................................ 30
Real-time data ............................................................................................................................................. 30
Logged Data ............................................................................................................................................... 31
Part B – Channels ...................................................................................... 33
Channel Definitions ................................................................................................ 33
Channel Numbers ................................................................................................... 33
Channel Number Sequence ........................................................................................................................ 34
Channel Types ......................................................................................................... 34
Internal Channel Types ............................................................................................................................... 37
Channel Options ..................................................................................................... 41
Overview ..................................................................................................................................................... 41
A Special Channel Option — Channel Factor ............................................................................................. 42
Multiple Reports .......................................................................................................................................... 42
Mutually Exclusive Options ......................................................................................................................... 42
Order of Application .................................................................................................................................... 43
Default Channel Options ............................................................................................................................. 43
Channel Option Table ................................................................................................................................. 44
Part C – Schedules .................................................................................... 48
Schedule Concepts ................................................................................................. 48
What are Schedules? .................................................................................................................................. 48
Schedule Syntax ......................................................................................................................................... 48
Types of Schedules ................................................................................................ 51
UM-0085-B09 DT80 Range User Manual Page 5
RG
General-Purpose Report Schedules ........................................................................................................... 51
Immediate Report Schedules ...................................................................................................................... 56
Statistical Report Schedules ....................................................................................................................... 57
Working with Schedules ......................................................................................... 58
Entering Schedules into the DT80 (BEGIN–END) ...................................................................................... 58
Triggering and Schedule Order ................................................................................................................... 58
Changing a Schedule Trigger ..................................................................................................................... 59
Halting & Resuming Schedules ................................................................................................................... 59
Executing Commands in Schedules ........................................................................................................... 59
Time Triggers — Synchronizing to Midnight ............................................................................................... 60
Part D – Jobs .............................................................................................. 61
What is a Job? ............................................................................................................................................ 61
Entering a Job ............................................................................................................................................. 61
Loading an Existing Job .............................................................................................................................. 62
Job Structure ............................................................................................................................................... 62
Job Commands ........................................................................................................................................... 63
Startup Job .................................................................................................................................................. 64
ONINSERT Job ........................................................................................................................................... 64
Part E – Manipulating Data ....................................................................... 65
Scaling ..................................................................................................................... 65
Channel Factor ........................................................................................................................................... 65
Spans (Sn) .................................................................................................................................................. 65
Polynomials (Yn) ......................................................................................................................................... 66
Thermistor Scaling (Tn) ............................................................................................................................... 66
Intrinsic Functions (Fn) ................................................................................................................................ 67
Combining Scaling Options ......................................................................................................................... 67
Calculations ............................................................................................................. 67
Channel Variables (nCV) ............................................................................................................................ 67
Calculation Only Channels .......................................................................................................................... 69
Reference Channels ................................................................................................................................... 69
Expressions ................................................................................................................................................ 70
Running Average ........................................................................................................................................ 74
Derived Quantities .................................................................................................. 75
Rates and Integrals ..................................................................................................................................... 75
Edge Timing ................................................................................................................................................ 75
Statistical Channel Options .................................................................................... 76
Overview ..................................................................................................................................................... 76
Statistical Functions .................................................................................................................................... 77
Multi Value Statistical Options ............................................................................... 78
Histogram (Hx:y:m..nCV) ............................................................................................................................ 78
Rainflow Cycle Counting ............................................................................................................................. 79
Part F – Alarms .......................................................................................... 82
Alarm Concepts ....................................................................................................... 82
Alarm Commands ................................................................................................... 82
Alarm Number ............................................................................................................................................. 83
Alarm Condition .......................................................................................................................................... 83
Alarm Digital Action Channels ..................................................................................................................... 85
Alarm Action Text ........................................................................................................................................ 85
Alarm Communication Actions .................................................................................................................... 87
UM-0085-B09 DT80 Range User Manual Page 6
RG
Alarm Action Processes .............................................................................................................................. 88
Alarm Records ......................................................................................................... 92
Real Time Alarm Return .............................................................................................................................. 92
Logging Alarms ........................................................................................................................................... 92
Polling Alarm Inputs ............................................................................................... 93
Part G – Logging and Retrieving Data ..................................................... 94
Logging Data ........................................................................................................... 94
Enabling and Disabling Data Logging ......................................................................................................... 94
How Data and Alarms are Stored ............................................................................................................... 94
Logging Options .......................................................................................................................................... 96
Factors Which May Prevent Logging .......................................................................................................... 96
Checking Logging Status ............................................................................................................................ 97
Retrieving Logged Data .......................................................................................... 98
Overview ..................................................................................................................................................... 98
LISTD – List Available Data ........................................................................................................................ 98
COPYD – Unload Data ............................................................................................................................. 101
DELD - Delete Logged Data ..................................................................................................................... 111
Background Commands ............................................................................................................................ 112
Obsolete Commands ................................................................................................................................ 113
The DT80 File System ........................................................................................... 114
Internal File System (B:) ............................................................................................................................ 114
External USB Devices (A:) ........................................................................................................................ 114
File Commands ......................................................................................................................................... 116
Data Recovery .......................................................................................................................................... 116
Part H – DT80 Front Panel ...................................................................... 118
Display ................................................................................................................... 118
Displaying Channels and Alarms .............................................................................................................. 118
Bar Graph ................................................................................................................................................. 119
Controlling what is shown on the display .................................................................................................. 119
Auto-scrolling ............................................................................................................................................ 120
Auto-acknowledge .................................................................................................................................... 120
Pop-up Messages ..................................................................................................................................... 120
Interactive Screens ................................................................................................................................... 120
Display Backlight ....................................................................................................................................... 120
User Defined Functions ........................................................................................ 121
Defining Functions .................................................................................................................................... 121
Selecting Functions ................................................................................................................................... 121
Default Functions ...................................................................................................................................... 121
Keypad operation .................................................................................................. 122
Special Key Sequences ............................................................................................................................ 122
Status Indicator Lights ......................................................................................... 122
Sample Indicator ....................................................................................................................................... 122
Disk Indicator ............................................................................................................................................ 122
Power Indicator ......................................................................................................................................... 122
Attn Indicator ............................................................................................................................................. 122
Part I – dEX ............................................................................................. 124
What is dEX? ............................................................................................................................................ 124
dEX vs. Classic Web Interface .................................................................................................................. 124
UM-0085-B09 DT80 Range User Manual Page 7
RG
Connecting to the Web Interface ............................................................................................................... 124
dEX Home Page ....................................................................................................................................... 124
Starting dEX .............................................................................................................................................. 125
Browser Requirements .............................................................................................................................. 126
Back to the Main Menu (Home) ................................................................................................................ 126
dEX Configuration Builder ................................................................................... 126
Configure the logger ................................................................................................................................. 126
About Configurations................................................................................................................................. 126
Using the Configuration Builder ................................................................................................................ 126
Defining Schedules ................................................................................................................................... 128
Defining Channels ..................................................................................................................................... 130
Global Settings .......................................................................................................................................... 136
Managing Configurations .......................................................................................................................... 143
Logger Controls ........................................................................................................................................ 144
Preventing Configuration Changes ........................................................................................................... 144
dEX Web Interface ................................................................................................. 145
Using the Web Interface ............................................................................................................................ 145
Status Screens .......................................................................................................................................... 146
Data Retrieval ........................................................................................................................................... 148
Displaying Real-Time Measurements ....................................................................................................... 150
Command Window .................................................................................................................................... 157
Help ........................................................................................................................................................... 159
Customising the Web Interface ............................................................................ 160
Overview ................................................................................................................................................... 160
The Web Interface Configuration Tool ...................................................................................................... 160
Preventing Configuration Changes ........................................................................................................... 163
Enabling dEX User Level Authentication................................................................................................... 163
dEX Languages ........................................................................................................................................ 166
Classic Web Interface ........................................................................................... 167
Browser Requirements .............................................................................................................................. 167
Navigating the Web Interface .................................................................................................................... 167
Home Page ............................................................................................................................................... 167
Channels Page ......................................................................................................................................... 168
Status Page .............................................................................................................................................. 168
Files Page ................................................................................................................................................. 169
Help Page ................................................................................................................................................. 169
Customising the Classic Interface ....................................................................... 170
Web Application Programming Interface (API) .......................................................................................... 170
Server-Side Include (SSI) Directives ......................................................................................................... 170
Building A Custom Web Page ................................................................................................................... 173
Part J – Modbus Interface ...................................................................... 175
About Modbus ........................................................................................................................................... 175
Connecting to a Modbus Network ............................................................................................................. 175
Modbus Registers ..................................................................................................................................... 176
Putting It All Together ................................................................................................................................ 179
Part K – Communications ....................................................................... 182
Overview ................................................................................................................ 182
Services .................................................................................................................................................... 182
Protocols ................................................................................................................................................... 182
Physical Ports ........................................................................................................................................... 183
About the Communications Diagram ........................................................................................................ 183
UM-0085-B09 DT80 Range User Manual Page 8
RG
The Command Interface ....................................................................................... 186
Connecting to the Command Interface...................................................................................................... 186
Command Interface Operation .................................................................................................................. 186
Detecting DT80 Presence ......................................................................................................................... 186
Password Protection ................................................................................................................................. 186
USB Port ................................................................................................................ 187
Configuring the USB Port .......................................................................................................................... 187
About DtUsb .............................................................................................................................................. 187
Installing DtUsb ......................................................................................................................................... 188
Using DtUsb .............................................................................................................................................. 191
USB Direct Serial Mode ............................................................................................................................ 192
Sleep Mode ............................................................................................................................................... 193
RS-232 Communications ...................................................................................... 193
Direct RS-232 Connection ........................................................................................................................ 193
RS-232 Flow Control ................................................................................................................................. 193
Sleep Mode ............................................................................................................................................... 194
Host RS-232 Port ................................................................................................... 195
Configuring the Host RS-232 Port ............................................................................................................. 195
Serial Sensor Port ................................................................................................. 196
Connecting to the Serial Sensor Port ........................................................................................................ 197
Configuring the Serial Sensor Port ............................................................................................................ 198
External Modem .................................................................................................... 200
Modem (Remote) RS 232 Connection ...................................................................................................... 200
Automatic Modem Detection ..................................................................................................................... 200
DT80-to-Modem Cable .............................................................................................................................. 200
Modem Initialisation .................................................................................................................................. 201
Powering the DT80’s Modem .................................................................................................................... 203
Modem Communications Operation .......................................................................................................... 203
Setting Up a Remote Connection .............................................................................................................. 204
Part L – Network Communications ........................................................ 205
TCP/IP Concepts ................................................................................................... 205
About TCP/IP ............................................................................................................................................ 205
About This Section .................................................................................................................................... 205
TCP/IP Parameters ................................................................................................................................... 206
Integrated Modem ................................................................................................. 207
Mobile Plans ............................................................................................................................................. 208
Getting Started .......................................................................................................................................... 210
Configuring the Integrated Modem ............................................................................................................ 211
Verifying Modem Operation ...................................................................................................................... 215
Troubleshooting and Advanced Configuration .......................................................................................... 217
Communications Sessions .................................................................................. 222
Session Timing ......................................................................................................................................... 222
Error handling ........................................................................................................................................... 224
Session Diagnostics .................................................................................................................................. 227
Ethernet Sessions ..................................................................................................................................... 229
Ethernet Communications.................................................................................... 231
Connecting to the DT80 Ethernet Port ...................................................................................................... 231
Ethernet Commands ................................................................................................................................. 233
How to set up Ethernet .............................................................................................................................. 235
Accessing the DT80 via the Internet ......................................................................................................... 238
WiFi Communications .......................................................................................... 240
UM-0085-B09 DT80 Range User Manual Page 9
RG
WiFi Interface ............................................................................................................................................ 240
WiFi Commands ....................................................................................................................................... 240
Setting up WiFi Connection ....................................................................................................................... 244
PPP Communications ........................................................................................... 246
About PPP ................................................................................................................................................ 246
Setting up PPP .......................................................................................................................................... 246
Using PPP ................................................................................................................................................. 253
Network Services .................................................................................................. 254
Using the Network Command Interface .................................................................................................... 254
Using the DT80 FTP Server ...................................................................................................................... 255
Security .................................................................................................................. 257
Basic Security ........................................................................................................................................... 257
dEX Security ............................................................................................................................................. 258
Part M – Configuration ............................................................................ 260
Configuring the DT80 ............................................................................................ 260
Parameters ............................................................................................................................................... 260
Switches .................................................................................................................................................... 262
Profile Settings .......................................................................................................................................... 264
Command Server Timeout Profile ............................................................................................................. 269
Setting the System Time ........................................................................................................................... 269
Automatic Time Adjustment (NTP) ............................................................................................................ 270
Resetting the DT80 ................................................................................................ 273
Soft Reset ................................................................................................................................................. 273
Hard Reset ................................................................................................................................................ 273
Safe Mode ................................................................................................................................................. 274
Factory Settings ........................................................................................................................................ 274
Diagnostic Commands ......................................................................................... 275
TEST Command ....................................................................................................................................... 275
Event Logs ................................................................................................................................................ 276
STATUS Command .................................................................................................................................. 276
CHARAC Command ................................................................................................................................. 277
SERVICEDATA Command ....................................................................................................................... 277
Part N – Hardware & Power .................................................................... 278
Inputs and Outputs ............................................................................................... 278
Wiring Panel .............................................................................................................................................. 278
Left Side Panel .......................................................................................................................................... 279
Right Side Panel (DT8xM only) ................................................................................................................. 280
Right Side Panel (DT8xW only) ................................................................................................................ 280
Front Panel ............................................................................................................................................... 281
Rear Panel (DT8xG only) .......................................................................................................................... 281
Inside the DT80 ...................................................................................................... 282
Accessing the main battery (if fitted) ......................................................................................................... 282
Accessing the lithium memory backup battery .......................................................................................... 283
Installation ............................................................................................................. 285
Dimensions ............................................................................................................................................... 285
Operating Environment ............................................................................................................................. 285
Grounding ................................................................................................................................................. 286
Powering the DT80 ................................................................................................ 286
Power Subsystem ..................................................................................................................................... 286
UM-0085-B09 DT80 Range User Manual Page 10
RG
External Power .......................................................................................................................................... 287
Internal Power ........................................................................................................................................... 288
Power Outputs .......................................................................................................................................... 290
Signal Output ............................................................................................................................................ 291
Internal Memory-Backup Battery ............................................................................................................... 291
Monitoring DT80 Power ............................................................................................................................ 292
Power Consumption ............................................................................................. 292
Power Consumption .................................................................................................................................. 292
Battery Life ................................................................................................................................................ 297
Minimising Power Consumption ................................................................................................................ 298
Sleep Mode ............................................................................................................ 300
About Sleep Mode .................................................................................................................................... 300
Wake Events ............................................................................................................................................. 300
Controlling Sleep ....................................................................................................................................... 300
Forced Sleep Mode ................................................................................................................................... 301
Part O – Sensors & Channels ................................................................. 302
Analog Channels ................................................................................................... 302
About the Analog Input Terminals ............................................................................................................. 302
Voltage ...................................................................................................................................................... 303
Current ...................................................................................................................................................... 306
4–20mA Current Loops ............................................................................................................................. 308
Resistance ................................................................................................................................................ 308
Bridges ...................................................................................................................................................... 311
Temperature – Thermocouples ................................................................................................................. 315
Temperature – Thermistors ....................................................................................................................... 317
Temperature – RTDs ................................................................................................................................ 319
Temperature – AD590 Series IC Sensors ................................................................................................. 319
Temperature – LM35 Series IC Sensors ................................................................................................... 321
Temperature – LM135 Series IC Sensors ................................................................................................. 322
Humidity Sensors ...................................................................................................................................... 323
Frequency ................................................................................................................................................. 323
Strain Gauges – Bridge ............................................................................................................................. 324
Strain Gauges – Vibrating Wire ................................................................................................................. 325
Strain Gauges – Carlson Meter ................................................................................................................. 327
Digital Channels .................................................................................................... 331
About the Digital I/O Channels .................................................................................................................. 331
Digital Inputs ............................................................................................................................................. 332
Digital Outputs .......................................................................................................................................... 333
Counters – Low Speed .............................................................................................................................. 337
Counters – High Speed ............................................................................................................................. 338
Phase Encoders ........................................................................................................................................ 340
Examples – Digital and Counters .............................................................................................................. 341
SDI-12 Channel ...................................................................................................... 342
About SDI-12 ............................................................................................................................................ 342
Testing and Configuring an SDI-12 Device ............................................................................................... 343
Reading Data from SDI-12 Devices .......................................................................................................... 343
Example .................................................................................................................................................... 345
Other Considerations ................................................................................................................................ 346
Troubleshooting ........................................................................................................................................ 346
Generic Serial Channel ......................................................................................... 348
Connecting to and Configuring the Serial Port .......................................................................................... 348
Serial Channel Commands ....................................................................................................................... 348
Serial Channel Operation .......................................................................................................................... 349
UM-0085-B09 DT80 Range User Manual Page 11
RG
Control String – Output Actions ................................................................................................................. 351
Control String – Input Actions ................................................................................................................... 353
Control String – Example .......................................................................................................................... 355
Schedules ................................................................................................................................................. 355
Serial Sensor Direct Mode ........................................................................................................................ 356
Serial Interface Power Control .................................................................................................................. 357
Serial Channel Debugging Tools .............................................................................................................. 357
Serial Channel Examples .......................................................................................................................... 358
Modbus Channel ................................................................................................... 361
About Modbus ........................................................................................................................................... 361
Connecting Serial Modbus Sensors .......................................................................................................... 361
Connecting Network Modbus Sensors ...................................................................................................... 362
Reading Data from Modbus Devices ........................................................................................................ 363
MODBUS Channel Options ....................................................................................................................... 364
Block Transfers ......................................................................................................................................... 365
Examples .................................................................................................................................................. 366
Troubleshooting ........................................................................................................................................ 366
Technical Details & Troubleshooting .................................................................. 368
DT80 Analog Sub-System ......................................................................................................................... 368
Grounds, Ground Loops and Isolation ...................................................................................................... 372
Noise Pickup ............................................................................................................................................. 373
Self-Heating of Sensors ............................................................................................................................ 373
Getting Optimal Speed from Your DT80 ................................................................................................... 374
Part P – The CEM20 ................................................................................. 375
What is the CEM20? ................................................................................................................................. 375
Connecting CEM20s ................................................................................................................................. 375
CEM20 Addresses .................................................................................................................................... 377
Powering the CEM20 ................................................................................................................................ 377
Accessing CEM20 Channels ..................................................................................................................... 377
CEM20 Temperature Reference ............................................................................................................... 378
Troubleshooting ........................................................................................................................................ 378
Part Q – Reference ................................................................................... 379
DT80 Series Specifications .................................................................................. 379
Analog Inputs ............................................................................................................................................ 379
Digital Inputs and Outputs ......................................................................................................................... 380
High Speed Counter Inputs ....................................................................................................................... 381
Serial Channels ......................................................................................................................................... 381
Data Manipulation and Logging ................................................................................................................ 382
Communication Interfaces ........................................................................................................................ 382
Network (TCP/IP) Services ....................................................................................................................... 383
System ...................................................................................................................................................... 384
CEM20 Specifications ........................................................................................... 385
Command Summary ............................................................................................. 386
ASCII-Decimal Table ............................................................................................. 389
RS-232 .................................................................................................................... 392
Signals ...................................................................................................................................................... 392
Cables ....................................................................................................................................................... 392
Upgrading DT80 Firmware ................................................................................... 394
Recommended Preparation ...................................................................................................................... 394
Firmware Upgrade – USB Flash Device ................................................................................................... 395
UM-0085-B09 DT80 Range User Manual Page 12
RG
Firmware Upgrade – Host USB or RS232 Port ......................................................................................... 395
Firmware Upgrade – Remote TCP/IP ....................................................................................................... 396
Reverting Back to Old Firmware ............................................................................................................... 396
In Case of Failed Upgrade ........................................................................................................................ 396
Upgrading Modem Firmware ..................................................................................................................... 396
Error Messages ..................................................................................................... 397
Standard Messages .................................................................................................................................. 397
Data Errors ................................................................................................................................................ 401
DT80 Abnormal Resets ............................................................................................................................. 402
Glossary ................................................................................................................. 403
Safety Information ................................................................................................. 414
General ..................................................................................................................................................... 414
Models with Internal Lead Acid Battery ..................................................................................................... 414
Models with Integrated Modem/ Integrated WiFi ....................................................................................... 414
Index ....................................................................................................................... 415
UM-0085-B09 DT80 Range User Manual Page 13
RG
Part A – The DT80
Figure 1: The dataTaker DT80, DT80W (left); DT85W, DT85GM, CEM20 (centre), DT82EM, DT82I (right)
DT80 Concepts
What is the DT80?
The dataTaker DT80 range of data acquisition and logging instruments are tools to measure and record a wide variety of
quantities and values in the real world.
The web based dEX graphical user interface makes it quick and easy to define basic measurement tasks. Logged data
can then be easily extracted via a USB "memory stick", or downloaded using the web interface into files ready for import
into spreadsheets and data analysis tools.
The DT80 range of loggers also include a powerful programming language which allows complex systems to be
developed and monitored.
Extensive sensor support and communications options, and a rugged and low-power design, make the DT80 a very
flexible data logger.
The DT80 Product Family
Models
The DT80 product family includes the following models:
• The DT80 is a full-featured data logger,
• The DT82E is a low cost, low power logger designed for environmental applications.
UM-0085-B09 DT80 Range User Manual Page 14
RG
• The DT82I is designed for industrial applications.
• The DT85 is an expanded and enhanced version of the DT80.
• The DT80L and DT85L are low power variants of the DT80 and DT85.
• The DT80W and DT85W are WiFi variant of the DT80 and DT85.
• The DT80G and DT85G GeoLoggers are designed for Geotechnical applications
• The DT80GW and DT85GW are WiFi variant of the DT80G and DT85G.
• The DT80GL and DT85GL are low power variants of the DT80G and DT85G.
• The DT82EM3, DT80LM3, DT85LM3 and DT85GLM3 contain an inbuilt GSM/EDGE/WCDMA cellular modem.
• The DT82EM2, DT80LM2, DT85LM2 and DT85GLM2 contain an inbuilt GSM/EDGE cellular modem.
• The CEM20 (Channel Expansion Module) is a 20-channel analog multiplexer which can be used to expand the
number of analog input channels on a DT80 or DT85.
All of these models operate in a similar way; the differences are mainly to do with the number of input channels and other
hardware features. Table 1 (P16) and Table 2 (P17) lists the main differences between each model.
Series 1, 2, 3 and 4
In January 2008, the original DT80, DT81 and DT85 models were superseded by enhanced Series 2 models. These
offered an all-new web based interface (dEX), additional power outputs, and more flexible analog input switching.
Series 3 models were introduced from October 2010. These supersede Series 2 and include enhanced resistance
measurement options and an isolated switched 5V power output.
Series 4 were launched from February 2017 and include increased voltage and resistance measurement ranges, flexible
12/ 5V power outputs and integrating with DAC converter to produce voltage/ current outputs as well as WiFi connectivity
support.
Along with DT80 Series 4 launch the new CEM20 Series 2 has also been released. In CEM20 Series 2 all mechanical
relays has been replaced by opto-relays . As result all audible noise from the mechanical relay switching was eliminated.
Series 2, 3 and 4 units are clearly labelled as such on the front panel.When a logger model number is displayed, the
series is shown as a suffix, e.g. "DT85L-3" is a Series 3 DT85L.
GeoLoggers
The DT80G/GL and DT85G/GL "GeoLoggers" are equivalent to the DT80 and DT85, but also include direct support for
vibrating wire strain gauges, which are widely used in geotechnical applications; see Strain Gauges – Vibrating Wire
(P325). Throughout this manual, references to the DT80 and DT85 also refer to the DT80G and DT85G respectively,
unless otherwise noted.
Low Power Models
Most DT80 models include an internal 6V lead acid battery. However the low power "L" and "E" models do not include
an internal battery and are instead optimised for operation with an external battery (often solar charged). Throughout this
manual, references to the DT80 and DT85 also refer to the DT80L and DT85L respectively, unless otherwise noted.
Modem Models
The "M" models (DT82EM, DT80LM, DT85LM, DT85GLM) include an integrated cellular modem, which provides a
convenient wireless solution for control of the DT80 and data retrieval. The "M3" models support 2G and 3G networks
(GSM/ GPRS/ EDGE/ WCDMA), while the "M2" models support 2G only (GSM/ GPRS/ EDGE). Apart from this
difference, the M2 and M3 variants operate identically.
WiFi Models
The "W" models (DT80W, DT80GW, DT85W, DT85GW) include an integrated WiFi interface, which provides a
convenient wireless solution for control of the DT80 and data retrieval. See WiFi Communications (P240).
Channel Expansion Module
The CEM20 is an analog multiplexer designed to work with a DT80 or DT85 Series 2 logger and later revisions. It
provides an easy way to expand the number of input channels. Up to 16 CEM20 modules can be connected to a DT85,
giving a total of 320 input channels. See The CEM20 (P375).
Note: In this manual, the term DT80 (italics) is used to refer to all products (DT80, DT81, DT82 and DT85; Series 1, 2, 3 and 4). If a
feature or behaviour is specific to a particular model, this will be made clear in the text.
UM-0085-B09 DT80 Range User Manual Page 15
RG
Feature
discontinued models
current models
Analog input channels
1 5 16 1 2 2 5 5 16
16 2 2 2 2 5 5 5 5 5 5
16
16
16
16
16
16
16
16
Fully isolated analog input pairs (+- and *#
terminals switched independently)
2-wire resistance measurements on *#, +# and # terminal pairs
Vibrating wire strain gauge support
- - - - - - - - - - - - - - - - - - - -
CEM20 modules supported
- - - - - - 5 5 16
16 - - - - 5 5 5 5 5 5
16
16
16
16
16
16
16
16
Digital I/O channels (open-drain outputs)
3 4 4 3 3 4 4 4 4 4 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4
4
Digital I/O channels (logic outputs / SDI-12)
1 4 4 1 1 - 4 4 4 4 1 1 1 - 4 4 4 4 4 4 4 4 4 4 4 4 4 4 High speed counter inputs
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 7 4 7 7 7 4 7
7
Phase encoder inputs
1 2 2 1 - 2 2 2 2 2 - - - 2 2 2 2 2 2 2 3 2 3 3 3 2 3
3
RS232/422/485 communications port
-
-
-
- - -
RS232 communications port
-
-
-
-
-
- -
-
USB communications port
-
-
- - -
-
Ethernet port
Integrated GSM/GPRS/EDGE/WCDMA modem
- - - - - - - - - - -
- - - - - - - - - - - -
-
Integrated GSM/GPRS/EDGE modem
- - - - - - - - - - -
- - - - -
- - - - -
-
-
-
USB memory device port
Switched 12V power output
-
-
Unswitched external power output
-
-
- - - - -
- - - - - - - - -
-
Switched isolated 5V power output
- - - - - - - - -
-
Battery charger for internal/external battery
-
- - -
- - -
-
- - - - -
-
Internal battery (capacity in Ah)
1.2
1.2
4.0
1.2 - 1.2
1.2 - 4.0
4.0 - - - 1.2
1.2 - - - - - 4.0
4.0 - - - - - -
Modbus master function
-
-
-
- - -
LCD display & keypad
-
-
Status LEDs
4 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
4
Classic web interface (HTML)
dEX Enhanced web interface (Flash)
- - -
WiFi Connectivity
- - - - - - - - - - - - - - - - - - - - - - - - - - -
-
Voltage/ Current Output
- - - - - - - - - - - - - - - - - - - - - - - - - - -
-
DT81-1
DT80-1
DT85-1
DT81-2
DT82E-2
DT82I-2
DT80-2
DT80G-2
DT85-2
DT85G-2
DT82E-3
DT82EM2-3
DT82EM3-3
DT82I-3
DT80-3
DT80G-3
DT80L-3
DT80LM2-3
DT80LM3-3
DT80GL-3
DT85-3
DT85G-3
DT85L-3
DT85LM2-3
DT85LM3-3
DT85GL-3
DT85GLM2-3
DT85GLM3-3
- -
- - - - - - - - - -
Table 1: Feature listing for DT80 data logger Series 3 and older
UM-0085-B09 DT80 Range User Manual Page 16
RG
Feature
current models
Analog input channels
2 2 2 5 5 5 5 5 5 5 16
16
16
16
16
16
16
16
Fully isolated analog input pairs (+- and *#
terminals switched independently)
2-wire resistance measurements on *#, +# and -#
terminal pairs
Vibrating wire strain gauge support
- - -
- -
- - - -
-
-
CEM20 modules supported
- - - 5 5 5 5 5 5 5 16
16
16
16
16
16
16
16
Digital I/O channels (open-drain outputs)
3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
4
Digital I/O channels (logic outputs / SDI-12)
1 1 - 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 High speed counter inputs
4 4 4 4 4 4 4 4 4 4 7 4 7 7 4 7 7
4
Phase encoder inputs
- - 2 2 2 2 2 2 2 2 3 2 3 3 2 3 3
2
RS232/422/485 communications port
-
-
RS232 communications port
-
-
- -
USB communications port
- - -
Ethernet port
Integrated GSM/GPRS/EDGE/WCDMA modem
- - - -
- - - - - -
- - -
-
Integrated GSM/GPRS/EDGE modem
- - - - - - - - - - - - - - - - -
-
USB memory device port
Switched 12V power output
Unswitched external power output
- - - - - - - - -
-
Switched isolated 5V power output
- - - - - - - - - - - - - - - - - - Battery charger for internal/external battery
-
-
- - -
- - -
-
Internal battery (capacity in Ah)
- - 1.2
1.2 - - - -
1.2 - 4.0
4.0 - - - -
4.0
4.0
Modbus master function
-
-
LCD display & keypad
Status LEDs
Classic web interface (HTML)
dEX Enhanced web interface (Flash)
WiFi Connectivity
- - - - - - -
-
- - - - -
-
Voltage/ Current Output
-
-
DT82EM3- 4
DT82I- 4
DT80- 4
DT80G- 4
DT80L- 4
DT80LM3- 4
DT80GL- 4
DT80W-4
DT80GW-4
DT85- 4
DT85G- 4
DT85L- 4
DT85LM3- 4
DT85GL-3
DT85GLM3- 4
DT82E- 4
DT85W-4
DT85GW-4
Table 2: Feature listing for DT80 data logger Series 4
UM-0085-B09 DT80 Range User Manual Page 17
RG
DT80-Friendly Software
Programming and Configuration
There are three main ways to set up and program the DT80.
• dEX is a web based application for programming and monitoring DT80 Series 2/ 3/ 4 data loggers. dEX is built
into the logger (no installation required) and runs in your web browser. It provides a totally graphical interface,
which means that knowledge of the dataTaker programming language is not required. Channels and schedules
are defined simply by clicking on icons and making selections from menus and dialog boxes; dEX will then
generate the required DT80 program and load it onto the logger.
• Alternatively, commands entered interactively and then sent to the DT80 via one of its comms ports or a TCP/IP
network. This allows full access to the DT80's capabilities. DeTransfer, or the enhanced web interface's
command window, are the best tools for the job here. They both have separate send and receive windows, a
macro facility, and many other useful features. A standard terminal program (e.g. HyperTerminal) can also be
used.
• Finally, you can develop a DT80 program off-line (e.g. using a text editor), then transfer it to the DT80 using a
USB memory device or send it as a file using DeTransfer.
Viewing Data and Status
Once the DT80 has been set up, there are a number of options for retrieving data and monitoring status:
• The DT80's inbuilt web interface (dEX) provides a convenient way to access current data values and status
information from any web browser. dEX is available on Series 2, 3 and 4 loggers.
• A simple HTML-based web interface is also provided on all loggers. This can be customised if required to
provide an application-specific user interface. This interface is designed to operate efficiently on slow
communications networks or on portable devices with a small display screen.
• DeTransfer can be used to view real-time and logged data in text format.
• dataTaker Instrument driver for LabVIEW™ is a set of drivers and documentation which allows dataTaker
data loggers to be incorporated in a LabVIEW environment. LabVIEW is National Instruments' industry-leading
graphical software development environment for measurement and automation applications.
All software is provided on the CD supplied with your DT80, and updates are available from the dataTaker website,
www.datataker.com (Support/ Downloads section).
About This Manual
This manual is intended for all users of the DT80. It describes:
• how to connect sensors and other devices to the DT80's input and output channels.
• how to program the DT80 to collect and return data as required.
• how to manage the data that the DT80 collects.
The main focus of this manual will be on directly programming the DT80 using its command language. However, most of
the concepts discussed here also apply when building programs using tools such as dEX.
A Tour of the DT80's Interfaces
The DT80's interfaces with the outside world are grouped into three main areas: user interface (top), sensor interface
(front) and communications interface (side). See also Inputs and Outp uts (P278).
User Interface
On the top panel of the DT80 you will find controls which allow the user to interact with the unit during operation – without
requiring a host computer:
• A 2-line LCD display shows status messages, measured values, and a menu of pre-defined functions (not
DT81)
• Six keypad buttons allow the user to navigate between the various displayed options (not DT81)
• Four status LEDs are provided – the blue Sample LED flashes each time a measurement is taken, the green
Disk LED indicates internal flash disk activity, the red Attn LED indicates various warning conditions, and the
green Power LED flashes at 3 second intervals while the logger is powered and not in low "sleep" mode. The
duty cycle of the flash indicates whether the logger is externally powered (long flashes) or running from its
internal battery (short flashes).
Note: Power LED is not present on DT80 Series 1.
• A USB socket allows connection of a USB memory device, which provides a convenient way to retrieve data
from the DT80 (or load a program onto it).
UM-0085-B09 DT80 Range User Manual Page 18
RG
Sensor Interface
On the sloping front panel of the DT80 there are two rows of terminal blocks – digital channels on the left, analog
channels on the right. The green terminal blocks can be quickly unplugged from the DT80 without unscrewing the sensor
cabling. This interface includes:
• 8 digital input/ output/ counter channels (1D–8D), 4 of which are SDI-12 compatible (DT82I: 4 channels; DT81/
82E: 4 channels, one of which is SDI-12 compatible)
• an input to wake the DT80 from low power "sleep" mode (WK)
• 4 high speed counter inputs (7 on DT85/ 85L Series 3) (1C–4C)
• 2 phase encoder inputs, shared with the counter inputs connected) (1PE–2PE) (one phase encoder input on
DT81, none on DT82E, 3 on DT85/ 85L Series 3)
• a pair of voltage free relay contact outputs (RELAY A and B)
• a general purpose switched 12V 150mA power output (12V) (DT80/ 81/ 82E and DT85 Series 2/3 only)
• a general purpose switched 12V/5V 300mA power output (12V/5V) (DT80/ 82E, DT85 Series 4 only)
• a general purpose current limited (300mA) power output (PWR OUT), which is derived from the external power
input (DT85 only)
• an isolated switched 5V power output (5V SW) (Series 3 only)
• an isolated programmable 16-bit voltage and current output (V/I DAC) (Series 4 only)
• digital / power ground terminals (DGND)
• an RS232/422/485 compatible serial port (Tx, Rx, RTS and CTS) (not present on DT81/ 82E)
• a number of analog input channels (5 channels for DT80, 1 channel for DT81, 16 channels for DT85)
• an external excitation input (EXT *)
• isolated analog ground terminals (AGND on DT80/81, EXT# on DT80 Series 2 and DT85)
Note: early production DT80 models only had 4 analog inputs
Communications/ Power Interface
On the left side panel you have a variety of connectivity options:
• 10-Base-T Ethernet for connection to a host computer or local area network
• USB for high speed connection to a host computer (not present on DT82)
• RS232 for connection to host computer or modem (not present on DT8xM)
• two alternative DC power connectors – a standard plug-pack socket (DC jack) and a 4-pin terminal block (2-pin
for DT82E/ 80L/ 85L)
For more details, see Communications (P182)
Wireless Modem Interface (DT8xM only)
On the right side panel are the integrated modem interface:
• SIM card slot (subscriber identity module)
• red status LED
• coaxial screw connector for optional "receive diversity" antenna (DT8xM3 only)
• coaxial screw connector for main antenna.
A threaded earth point is also available on both left and right side panels. See Grounding (P286).
WiFi Interface (DT8xW only)
On the right side panel are the integrated WiFi interface:
• coaxial screw connector for main antenna.
A threaded earth point is also available on both left and right side panels. See Grounding (P286).
Getting Started
Power
Powering the DT80 (P286) discusses the ways to provide power to the DT80. The simplest option is to plug in the
supplied AC adaptor.
All DT80 models except the DT82E include an internal 6V lead-acid battery which can power the logger if the main
external supply is interrupted.
Important: The DT80 is shipped with its main internal battery disconnected. We recommend the battery is connected as soon as
practical so that it can charge from the mains adaptor or other external power source. This is achieved by simply plugging the green
power connector, see Powering the DT80 (P286).
UM-0085-B09 DT80 Range User Manual Page 19
RG
Switch On!
When power is connected, you should observe:
• the LCD backlight switches on (DT80/ 85), and the green Power LED starts flashing
• a brief clicking sound as the unit performs an initial self-calibration
• DT80 restarted / Power loss is displayed on the LCD
• the front panel LEDs flash a few times then the red Attn LED continues to flash.
The DT80 is warning you that its power has been interrupted. Press any of the front panel keys to clear this indication.
The Attn LED should stop flashing and the display should now read: DT80 V9.20 / No current job. This indicates
that:
• the version of DT80 firmware in use is "9.20" (this number may vary), and
• no user program (or "job") has been loaded
The DT80 is now idle and waiting for instructions.
Connecting to a Host Computer
In order to program the DT80, it is generally necessary to connect it to a "host" computer. The easiest option here is to
use the supplied USB cable, or, for the DT82E/82I, the supplied Ethernet cable. Other options are to use a "null-modem"
(cross-over) RS232 cable, or to connect the logger to an Ethernet network. See Communications (P182) for more details
of the different communications options.
Very briefly, connecting the DT80 via USB involves the following steps:
1. Install the supplied DtUsb driver software. This allows you to access to DT80's network services via a USB
connection.
2. Connect the USB cable between the DT80 and the PC.
3. The Windows "New Hardware Found" wizard will then run automatically (if required) to complete the installation
of the necessary drivers.
4. Your default web browser will then be launched automatically and the dEX home page will be displayed.
To connect to the DT80 using Ethernet:
1. Connect the Ethernet cable between the DT80 and the PC, or between the DT80 and a socket on your
computer's local area network.
2. Use the DT80 keypad to scroll down to the "Ethernet" screen. Check that a valid IP address is displayed, e.g.
169.254.3.202
3. Launch your web browser and type the logger's IP address into the address bar. The dEX home page should
be displayed.
The above is only a brief overview. See USB Port (P187) for detailed, step by step instructions.
As an alternative to the dEX web-based interface, you can also install the supplied DeTransfer software, which can be
used to send the text-based commands described in this manual to the logger. DeTransfer can operate over a direct
RS232/ USB connection or a network connection, and will work with any logger model.
The remainder of this manual will assume you have successfully established a connection between the host PC and the
DT80.
Sending Commands
The DT80 is programmed by sending it textual commands. These commands may be either:
• manually entered (using DeTransfer, or the Command screen in dEX), or
• generated by the dEX configuration builder, based on details entered using its graphical user interface controls.
Commands are executed by the DT80 only after it receives a carriage-return character (↵).
Commands are not case-sensitive; that is, they may be entered using either uppercase or lowercase characters.
In this manual all commands are shown in UPPERCASE. Responses from the DT80 are shown like this.
After receiving a command, the DT80 will normally echo the command, after converting it to uppercase. After a command
has been processed, the DT80 will normally indicate that it is ready for the next one by transmitting a prompt string,
such as:
DT80>
Note: the DT80 does not echo each character as it is received.
Command echo and the prompt string can be turned off if required using the /e switch command, see Switches (P262).
The maximum length of a command is 1023 characters.
UM-0085-B09 DT80 Range User Manual Page 20
RG
The general categories of commands are:
• channel definitions (P33) (e.g. 2TK("Kiln temp",FF4)) – these define what measurements are to be
taken, how they are to be acquired and how the measured values are to be presented.
• schedule definitions (P48) (e.g. RA(DATA:2MB)10S) – these define when a set of measurements are to be
taken and where the results are to be stored
• job management commands (P61) (e.g. BEGIN, END, SHOWPROG) – these allow a set of schedule and
channel definitions to be grouped into a single program, or "job", which can then be treated as a unit.
• data management commands (P94) (e.g. COPYD, LISTD) – these allow logged data points and alarms to be
retrieved, displayed or deleted.
• configuration commands (P260) (e.g. PROFILE) – these allow various aspects of the DT80's operation to be
adjusted to suit particular requirements.
Jobs (sets of commands) are stored in the DT80's internal file system along with the data they generate. Different jobs
can be loaded under manual or program control. In addition, the DT80 can automatically run a particular job every time it
is reset or powered up. See Startup Job (P64).
Getting Help
There are several options for getting help with programming the DT80:
• The command
to display a list of available topics. For example,
• This user manual, firmware release notes and a list of known issues are automatically installed onto the DT80's
internal file system each time a firmware upgrade is done. In this way you always have access to up-to-date
documentation for the installed firmware version. The easiest way to view these is via the DT80's built-in web
interface.
• The dataTaker website (
code examples, sensor information, application notes, video tutorials and an online forum.
HELP topic will display useful summary information on a number of topics. Type HELP by itself
HELP COMMANDS will display a list of DT80 commands.
www.datataker.com) contains an extensive database of frequently asked questions,
Designing Your Data Logging System
Data acquisition and data logging are orderly processes and should be undertaken in a systematic way. In order to
obtain effective information efficiently, do the following:
• Identify the quantities to be measured.
• Select the sensors, considering measurement range, accuracy, stability, ruggedness and cost.
• Select the wiring configuration. For example, resistive sensors can be connected in 2, 3 or 4 wire configuration,
while serial sensors can use different electrical standards (RS232/ RS485 etc.) and data rates.
• Determine sensor output scaling, that is, the relationship between sensor output voltage/current/resistance/etc.
and the actual quantity. For many sensor types this calculation is performed automatically by the DT80 – all you
need to do is specify the appropriate channel type.
• Determine how data is to be processed, for example statistical functions such as max/min or histograms may be
required.
• Decide on the sample frequency – don't sample faster than you need to.
• Calculate the volume of data to be collected.
• Decide on the method of data recovery and archiving – real-time data return or logging or both? Will logged
data be unloaded via a comms port, or collected using a USB memory device, or transmitted to an FTP site?
How often?
• Decide on an appropriate communications technology for setup/maintenance and normal operation: RS232,
USB, Ethernet, modem, none?
• Consider the power consumption, including the use of low power “sleep” mode. In the event of a power failure
will the DT80’s internal battery provide adequate running time?
The remainder of this manual will help you address these questions and then generate a suitable program for your DT80.
UM-0085-B09 DT80 Range User Manual Page 21
RG
Measurements
What can the DT80 Measure?
Analog
Using its analog inputs, the DT80 can directly measure the following:
• DC voltage (30mV, 300mV, 3V , 50V, (30V – Series 3 or older) ranges)
• DC current (0.3mA, 3mA and 30mA ranges with internal 100 Ohm shunt)
• resistance (10Ω, 100Ω, 1kΩ, 10kΩ (maximum for Series 3 or older), 1MΩ ranges)
• frequency (0.1 to 450,000 Hz (to 10,000 Hz – Series 3 or older))
Many other quantities can be measured by connecting appropriate sensors which convert a physical quantity into
something that the DT80 can measure.
The DT80 directly supports:
• 4-20mA current loop sensors (0 to 100%)
• temperature sensors (thermocouples, RTDs, thermistors, IC sensors)
• bridges and strain gauges
• vibrating wire strain gauges (DT80G/ 85G only)
This list can be extended by means of user specified scaling calculations.
Digital
The DT80’s digital and counter channels allow the measurement of:
• digital input state (contact closure, CMOS or TTL logic)
• pulse count (32 bit)
• phase encoder position (32 bit)
Serial
Various “smart sensors” can also be read:
• SDI-12 (Serial Data Interface – Programmable baud rates) based sensor networks
• other serial sensor devices with an RS232/ 422/ 485 interface, such as weighing machines, barcode scanners
• CAN (Controller Area Network) sensors, using the optional dataTaker CANgate CAN to ASCII gateway device.
The use of this product is outside the scope of this manual.
Analog Channels – Introduction
Figure 2: DT80 analog terminals
Input Terminals
The DT80 provides five analog input channels, numbered 1 to 5. Depending on the wiring configuration used, these allow
between 5 and 15 separate voltages to be measured. The DT81 has one analog input channel, allowing 1-3 separate
voltages to be measured, and the DT82E has two (2-6 separate voltage measurements). Finally, the DT85 has 16
analog input channels, allowing 16-48 separate voltage measurements.
Each analog input channel on a DT80 is a 4-wire connection (see Figure 3 ) that allows voltage, current, resistance and
frequency to be measured. These are the fundamental signals output by most sensors. It is not necessary to use all four
terminals on each channel— two are often adequate.
UM-0085-B09 DT80 Range User Manual Page 22
RG
The exact function of each terminal varies depending on how the channel is programmed. In general terms:
• The * ("Excite") terminal can be a voltage input (relative to # terminal), or it can provide sensor excitation (for
example, for resistance measurement) See Sensor Excitation (P24)
• The + ("Plus") terminal is a voltage input (relative to – or # terminal)
• The – ("Minus") terminal is a voltage input (relative to # terminal)
• The # ("Return") terminal is normally used as a common or return terminal. It can also be used as a current
input, using the DT80's internal shunt resistor.
Figure 3: Analog input channel terminal labels
Multiplexers
The DT80's analog input channels are multiplexed. The required input terminals are first connected to the input of the
DT80's instrumentation amplifier and analog to digital converter, then a measurement is taken. The next channel to be
sampled is then switched through to the amplifier and ADC, and so on. Simultaneous sampling of analog channels is not
possible.
Channel definition commands in the DT80 program determine which terminals are used for a particular measurement.
For example, the channel definition
1+V measures the voltage between the + and # terminals on channel 1.
Gain Ranges and Attenuators
The DT80's instrumentation amplifier has three switchable gain settings. These give three basic voltage measurement
ranges (3V, 300mV and 30mV full scale)
The DT80’s default is for its instrumentation amplifier to automatically change gain range to suit the input signal applied
to it by the multiplexers.
If the amplitude of your input signals are known, then the gain can be set manually. Do this by applying the
GLx (gain
lock) channel option, which disables autoranging for that channel and sets the gain to a fixed range.
The analog inputs also include switchable 16:1 (10:1 for Series 3 or older) attenuators, which effectively provide a fourth
range.
Warning: Maximum input voltage on any analog input is ±50V dc (±30V for Series 3 or older), relative to the AGND/EXT# terminal. If
this is exceeded then permanent damage may occur.
Analog Input Configurations
The basic quantity that the DT80 measures is voltage. Voltages can be measured using two different input
configurations:
• shared-terminal analog inputs
• independent analog inputs
Shared-Terminal Analog Inputs
Sometimes called "single-ended" inputs, a shared-terminal input is one that shares one or more of its terminals with
another input. In Figure 4, the three sensors share channel 1’s # terminal. Each of the three inputs is a shared-terminal
input.
Figure 4: Shared-terminal voltage inputs sharing a channel’s # terminal (voltage inputs used as example)
UM-0085-B09 DT80 Range User Manual Page 23
RG
In a shared-terminal configuration, a sensor’s "return" or "negative" wire is usually connected to the channel's # terminal.
The remaining sensor wire (the "positive" or "signal") is connected to any of the channel’s other three terminals. The
common terminal need not be at ground potential – all voltage measurements (shared or unshared) are differential, i.e.
only the difference
For shared-terminal inputs, the channel number is given a suffix indicating the terminal to which the positive wire is
connected. For example, a shared-terminal voltage input applied to channel 1 between the + and # terminals is
recognized by the channel definition
Independent Analog Inputs
An independent input (also known as an "unshared" input) is one that connects to its own terminals and does not share
any of those terminals with any other inputs. For example, in Figure 5, sensor A is connected to channel 1’s + and –
terminals, and sensor B is connected to the other two terminals of the channel. In other words, each sensor’s terminals
are independent of the other’s — no terminal is used by both sensors.
in voltage between the two terminals is reported.
1+V.
Figure 5: Wiring one or two independent inputs to a single channel (voltage inputs used as example)
Note: each analog input channel can support two independent voltage inputs. In the above example, the channel definition
sensor A while
1*V will read sensor B. The channel definition syntax is fully described in Channels (P33).
1V will read
Sensor Excitation
Many sensors require excitation (electrical energy) so that they can provide an output signal. For example, to read the
temperature of a thermistor, excitation current is passed through the thermistor to generate a voltage drop that can be
measured.
The DT80 can provide:
• Voltage source of approx. 4.5V via 1kΩ. Useful for powering some sensors however the supply is not regulated
and consequently liable to drift with temperature
• 2μA (approx.) current source. Excitation for high resistance measurement. Very stable over environmental
temperature range.
• 200μA (approx.) current source. Default excitation for resistance measurement. Very stable over environmental
temperature range.
• 2.5mA (approx.) current source. Default excitation for RTD and bridge measurement. Very stable over
environmental temperature range.
• DT 80 Series 4 provide 16-bit resolution Voltage/Current digital-to-analog converter outputs at V/I DAC terminal.
The current outputs can be set within 0-24mA range and voltage is within 10mV-10V range. The DAC output
can also be used as an external voltage or current excitation for many sensors. It can also be externally routed
to EXT* terminal.
• User supplied external excitation EXT* terminal. The user can provide an external excitation which is
appropriate to the sensor being used. See the Excitation category in the DT80 Channel Options (Table 5: DT80
Channel Options – P47).
More Information
For full details on how to connect sensors and make measurements using the DT80's analog inputs, see Analog
Channels (P302).
UM-0085-B09 DT80 Range User Manual Page 24
RG
Digital Channels – Introduction
Figure 6: DT80 digital terminals
The DT80 provides:
• 4 bidirectional digital I/O channels (1D-4D) with open drain output driver and pull-up resistor (DT81/ 82E: 3
channels, 1D-3D)
• 4 bidirectional digital I/O channels (5D-8D) with tri-stateable output driver and weak pull-down resistor. These
channels may also be used for controlling intelligent sensors using the SDI-12 protocol (DT81/ 82E: 1 channel,
4D)
• 1 voltage free latching relay contact output (RELAY)
• 1 LED output (Attn)
• 4 hardware counter inputs (1C-4C) which can be used as independent counter channels or as two quadrature
(phase encoder) inputs (DT81: one phase encoder input, shared with inputs 3C and 4C. There are no phase
encoder inputs on the DT82E)
As with analog channels, channel definition commands are used to specify which digital inputs are to be measured
and/or what digital output states are to be set. For example, the command
channel 1D, while
A transition on a digital channel can be used to trigger a schedule. This allows a series of measurements to be made (or
commands executed) in response to a change in digital state.
The DT80 can count the number of pulses received on any digital input. The four dedicated counter inputs provide
additional capabilities:
• a higher maximum count rate
• the ability to keep counting even if the logger is in low-power "sleep" mode
• optional low-level (5mV) input threshold levels
• optional decoding of phase-encoded input signals
For more details, see Digital Channels (P331)
3DSO=0 will set channel 3D low.
1DS will read the digital state (0 or 1) on
Serial Channels – Introduction
The DT80 supports two main classes of "smart sensor":
• A wide range of sensors, particularly in the environmental monitoring field, use the SDI-12 protocol. The DT80
fully supports this protocol making it a simple process to read measured values. See SDI-12 Channel (P362).
• The DT80 also provides a generic serial channel.
The serial channel allows a wide variety of sensors and devices to be controlled and polled. The serial channel:
• can use the dedicated serial sensor port (not DT81/82E), the host RS232 port (not DT8xM), and/or the USB port
• supports USB, RS232, RS422 and RS485 signal levels (depending on the port)
• supports point-to-point or multi-drop operation (point-to-point only for the host/USB port)
• features programmable output (poll) strings and a variety of options for parsing returned data
• can trigger execution of a schedule in response to received data
For more details, see Generic Serial Channel (P348).
UM-0085-B09 DT80 Range User Manual Page 25
RG
Programming the DT80
Typical Workflow
When creating a program to send to the DT80, typically the work will follow this order:
Connect Sensors
Sensors & Channels (P302) describes how to measure many different quantities and read many different sensor types
using the DT80’s analog, digital and serial inputs.
The first step is therefore to refer to the sub-section relating to the quantity you wish to measure. This will help you
decide on the most appropriate way to connect the sensor to the DT80.
Define Channels
Programming the DT80 essentially consists of :
• defining a series of measurements to take, and
• specifying when to take them.
Each measurement definition is referred to as a channel. It is important to be clear on how the word “channel” is used –
in DT80 parlance, it refers to a measurement to be made, not a physical input channel.
For example, if you program the DT80 to measure a voltage on analog input 1, then read the state of digital input 3, then
measure the voltage on analog input 1 again then you have defined three channels. The fact that the first and third
channels both measure the same physical quantity (the voltage on analog input 1) is irrelevant – as far as the DT80 is
concerned, they are two entirely separate measurements.
To specify when measurements are to be made, channel definitions may be grouped into schedule definitions. These
specify whether the channels should be sampled immediately, or periodically, or in response to some event.
To define a channel, you need to specify:
• the input number (e.g.
• the channel type (e.g.
• any channel options that may be required (listed in parentheses, e.g.
1 for analog input 1)
V to perform a voltage measurement)
(GL3V,FF3)
So to define the three channels mentioned above, you could enter:
Since we haven’t specified any schedule, these three measurements will be taken immediately, one after the other.
Default settings will be used, since no channel options were specified. By default, the DT80 will then return the measured
values in ASCII form to the host computer, e.g.
So once you have connected the sensor as described in Sensors & Channels (P302), you can then test it out by directly
entering a suitable channel definition.
For example, suppose we want to check the resistance of a resistor. In the section Resistance (P308), several different
wiring configurations are given. In this case we are going to connect the resistor directly to the DT80’s terminals so we
don’t need to worry about lead resistance issues. The simplest 2-wire configuration is therefore suitable, as described in
R4 – 2-Wire Independent Resistance Inp uts (P310). We therefore pick an analog input to use, say input 2, and wire the
resistor between the * and # terminals on analog input 2. We can now enter the channel definition:
DT80>
2*R 559.1 Ohm
In this case the channel number is
(measure resistance) and there were no channel options, so the complete channel definition is
Note: a particular physical input can be read using different channel types.
For example, a thermocouple can be read as a thermocouple or as a voltage. The command
returns both a temperature and a voltage based on two readings of the same sensor.
For more information about how channels (measurements) are specified in the DT80 programming language, see
Channels (P33).
1V 3DS 1V
1V 234.9 mV
3DS 1 State
1V 233.0 mV
2*R
2* (analog input 2, measuring between * and # terminals) and the channel type is R
2*R.
1TK 1V
UM-0085-B09 DT80 Range User Manual Page 26
RG
Define Measurement Schedules
A schedule defines when a set of channels should be measured. It consists of a list of channel definitions preceded by a
scan trigger specification. See Schedules (P48).
As a general rule when creating schedules, don’t instruct the DT80 to read channels more frequently than is really
necessary. For example, temperatures generally change slowly so rapid reading does not provide extra useful
information.
Up to eleven different schedules can be declared (A to K), each with a different trigger based on a time interval or a
digital input event. The schedule’s trigger can be changed at any time, either manually or under program control.
A list of channels without a trigger specification can be entered at any time. These are scanned immediately, without
affecting other schedules that may be operating. For more information, see Immediate Report Schedules (P56).
Important Whilst a schedule’s trigger can be changed at any time, its channel list cannot be altered without re-entering
all schedules. In fact, all schedules must be entered at the same time, either all on one line or between BEGIN and END
keywords (see Working with Schedules (P58)).
Jobs
A DT80 job is a logical "hold-all" for a group of schedule definitions and other commands. The command BEGIN signifies
the start of a job, and the command END signifies the end of the job. Once a job has been fully entered, the DT80 will
activate all schedules defined therein.
The DT80 can store more than one job (each with its own separate logged data and alarms), but only one can be the
current/active job. See Jobs (P61) for more details.
Scaling and Calculations
The DT80 can scale the channel input data to engineering units by applying intrinsic functions, spans or polynomials.
Arithmetic expressions provide cross-channel and other calculations. Various statistical functions, including averaging
and histogram channel options, can be applied. See Scaling (P65).
Reducing Data
In many instances the volume of the data recorded can be reduced by taking averages, maximums, minimums, standard
deviations, histograms or integrals. See Statistical Channel Options (P76).
Alarms and Conditional Execution
The DT80’s alarm facility is flexible and powerful. Alarms are used to warn of certain conditions (e.g. setpoint exceeded)
and to control the DT80’s operation. Alarms can
• control DT80 digital state outputs
• initiate execution of DT80 commands
• trigger the sending of messages to the host computer.
• set variables
Executing DT80 commands from an alarm can be particularly useful in modifying the DT80’s programming in response to
changes in input(s). See Alarms (P82).
Data Logging
The DT80 stores measurements in its internal data store or in a removable USB memory device. Logging begins only
after you issue the
By default, the DT80 overwrites the oldest data with new data once the memory is full. If you prefer to have the logger
stop logging once the memory is full then you need to set the no-overwrite schedule option
For more details see Logging and Retrievi ng Data (P94).
Selective Logging
To selectively log channels and schedules:
• For channels, use the
• For schedules, use the
LOGON command. Time and date stamping is automatic.
(NOV)(P49).
NL (no log) channel option
LOGONx & LOGOFFx commands
See Enabling and Disabling Data Logging (P94).
UM-0085-B09 DT80 Range User Manual Page 27
RG
Retrieving Data
The DT80 can do two things with the data it measures:
• Return it immediately to the host computer, where it can be seen arriving on-screen. This monitoring function is
data return in real time.
• Store it in its internal memory and/or an inserted USB memory device ready for retrieval (unload) to the host
computer at a later time. This is data logging.
The DT80 can carry out these functions separately, or at the same time.
Retrieving Real-Time Data
The DT80’s default is to return data in ASCII text form to a connected host computer instantaneously – that is, as it is
measured. (To override this send the /r switch to the data logger (P262)).
The logger's inbuilt dEX software can also display real-time data in tabular form in your web browser, or you can define
mimics to display the data in graphical form such as dials or trend charts.
Note: if the DT80 is configured to take measurements at a rapid rate then it is possible that not all data values will be returned. All
measurements will, however, be logged (if logging is enabled).
Retrieving Logged Data
Data stored in a DT80’s internal memory or USB memory device can be retrieved (or unloaded) by means of the Host
RS 232 port, the Ethernet port, or the USB port. Data can be retrieved for an individual schedule or all schedules, or for
all jobs or an individual job.
USB memory devices
The DT80’s USB port supports USB memory devices, which can be used
• as a medium for transferring logged data from the internal memory of a DT80 to a computer (see Retrieving
Logged Data (P98))
• as removable data storage. See Logging Data (P94)
• to load a job into a DT80. See ONINSERT Job (P64)
• to upgrade a DT80’s firmware. See Firmware Upgrade – USB Flash Device (P395)
Data stored on the USB memory device is in a Windows-compatible file structure – see
UM-0085-B09 DT80 Range User Manual Page 28
RG
The DT80 File System (P114).
UM-0085-B09 DT80 Range User Manual Page 29
RG
Format of Returned Data
As mentioned earlier, the DT80 can:
• make data available to a host computer as it is measured (real-time data), and/or
• store data in memory to be retrieved at a later date (logged data)
You can control whether data is returned or logged on a per channel, per schedule or global basis.
Real-time data
Web Access (dEX)
If the DT80 is connected to a host computer via a TCP/IP network then the logger's built in web interface can be used to
display real-time data in any web browser. This may be presented in tabular numeric format, or as graphical "mimic"
displays. See Displaying Real -Time Measurements (P150).
ASCII Data
The DT80 can also return real-time data in ASCII (text) form via its command interface. This can be in one of two
formats:
• free format mode
• fixed format mode (also known as "host mode", or "formatted mode")
/h switch command selects free format mode (which is the default); /H selects fixed format mode.
The
Free Format Mode /h
In free format mode, data is returned as human-readable ASCII text. Various settings are available to control how the
data is presented. By default, each channel is printed on a separate line, prefixed by its name (either a standard DT80
channel name e.g. "
3TK", or a user-specified name e.g. "Inlet temp") and followed by appropriate units.
Thus the following program:
would result in text similar to the following text being sent to the active communications port:
Pressure 102.3 kPa
2TK 98.0 degC
Valve state 1 State
Pressure 107.3 kPa
2TK 98.2 degC
Valve state 1 State
and so on.
By applying various formatting settings you can get different results. One possible example would be:
which would format the data thus:
12:46:00.029 102.32 97.98 1
12:46:30.017 107.34 98.22 1
In this example,
channel names and units. The
parameter setting (P260) that sets each data value to a fixed width (10 characters). Finally, the
(P47) specifies that the channel value is to be rounded to 2 decimal places.
RA30S 1V("Pressure~kPa") 2TK 5DS("Valve state")
/n/c/u/T P33=10 RA30S 1V("Pressure~kPa",FF2) 2TK(FF2) 5DS("Valve state")
/n/c/u are switch commands (P262) that have been used to switch off output of channel numbers,
/T switch causes each data record to be prefixed by a timestamp. P33=10 is a
FF2 channel option
Fixed Format Mode /H
Fixed format mode is designed for use with dataTaker host software. Data is still returned in ASCII form, but the record
format is fixed to allow it to be easily parsed by a computer. If /H is specified then both of the above examples will return
data as:
D,081044,"JOB1",2005/03/29,12:46:00,0.0293681,0;A,0,102.322,97.979902,1;0072;065F
D,081044,"JOB1",2005/03/29,12:46:30,0.0170320,0;A,0,107.341,98.220014,1;0072;3BEB
UM-0085-B09 DT80 Range User Manual Page 30
RG
Loading...