Legacy Hardware and Apps

This is for legacy hardware DT800 or older, and old dataTaker applications

Old Forum posted Apr 30 '19 at 12:51 pm
The DT800 we are using always stops logging data after logging about 1,6 MB of data. It is apparently logging into a 1 GB card, so the /o switch should not trigger as there is plenty of space to log into. Has anyone experienced such a problem?

Can it a configuration problem or a problem with the data card?

Sergi Udina
University of Barcelona

recent by Roger  ·  Apr 30 '19 at 12:52 pm
Old Forum posted Apr 30 '19 at 12:49 pm
I need to log temperature at 1 second intervals over a 5 minute period after receiving a digital input. There is no problem with getting the logging to start after the digital input, but not having much luck with getting it to stop.

Any info would be a great help.

recent by Roger  ·  Apr 30 '19 at 12:50 pm
Old Forum posted Apr 30 '19 at 12:46 pm
I having trouble setting up the DT800 to get correct readings from a thermistor. I'm using a 100 kOhm at 25 degC.

At first I set it up without entering info into the thermistor tab with the channel set at YS06 which I thought was the closest to what i had and was able to get the readings to change (read temp as -26C at room temp).

But once i entered data into the thermistor tab I it rea
StephenR posted Apr 30 '19 at 12:42 pm

Can i program the DT800 to log the time in secs and continue to add the time the DS in on =1. I was thinking along the lines of sending the DS to a CV and an alarm on the CV but how to count the time.

Any suggestions?

recent by Roger  ·  Apr 30 '19 at 12:44 pm
StephenR posted Apr 30 '19 at 12:38 pm

I have an application where power is being monitored which i have functioning OK but I need to log how long in secs the power is switched on. I have the output from a power transducer scaled and converted to kWh.

The power being switched by relay from a DSO how can I monitor On Time. I have tried the example from the online code examples

recent by Roger  ·  Apr 30 '19 at 12:40 pm
StephenR posted Apr 30 '19 at 12:34 pm

I have copied a folder from within the project folder from a customers PC which he also then emailed me as i could not open it.

When I try to open the project Delogger tells me that there is Insufficient memory to open the project and then Delogger closes down this is what happens on an XP operating system and on vista OS.

The customer has asked me to make some changes to the p
recent by StephenR  ·  Apr 30 '19 at 12:35 pm
StephenR posted Apr 29 '19 at 1:39 pm

I have two DT800 loggers which are both connected to a network through an Ethernet connection. i am connecting to the network from a PC in the office about 50 meters from the loggers.

All works well the live data can be streamed through and viewed in real-time but I cannot get the mimic to work at all from this connection as when I open the mimic window it displays the mimic dials/re
recent by Roger  ·  Apr 29 '19 at 1:39 pm
Before you read this - I'm pretty much feeling my way in this area - so have pity if my errors are obvious and basic...

I have a load cell, which provides its data to an LED display. I want to also log the load it registers using my DT800. The LED unit has terminals: Signal +/- and Excitation +/- Excitation is 10 VDC.

If I connect Signal +/- to the dataTaker on a channel type V, I get g
recent by Old Forum  ·  Apr 29 '19 at 1:34 pm
StephenR posted Apr 29 '19 at 1:24 pm

I have compiled the following piece of code using Delogger Pro to actuate a relay when alarm conditions are met in 50CV and in 15CV 16CV & 17CV and I have grouped the three CVs together as in start channel 15 end channel 17CV.

Is this correct that the alarm will be true if the 50CV is met and less than 16C in the further 3 CVs individually or should I separate the 3 CVs and put
recent by Roger  ·  Apr 29 '19 at 1:24 pm
StephenR posted Apr 29 '19 at 1:20 pm

Can I set up a mimic to view the reading in a channel variable. if so how as in the edit mode in the mimic window when I search for this channel I don't find it.


recent by Old Forum  ·  Apr 29 '19 at 1:21 pm
StephenR posted Apr 29 '19 at 1:14 pm

I have a DT800 of which i am using the 8 digital output channels drive relays for switching plant. The problem I have is that I require a further 2 digital output channels to drive 2 more relays any suggestions as to what I can do.


recent by Roger  ·  Apr 29 '19 at 1:18 pm
StephenR posted Apr 29 '19 at 1:06 pm

I have just compiled the program example below which is switching on and off equipment through relays with digital output channels based on certain conditions being met.

At present I cannot test this program and therefore just wanted to check the syntax and general program is OK.

'schedule definition
recent by Roger  ·  Apr 29 '19 at 1:12 pm
StephenR posted Apr 29 '19 at 1:02 pm
Hi Roger,

I was wondering what programming language is used in programming the DT800, as i would like to learn how to program the DT800 and not only use Delogger interface. From many of the code examples and solutions to questions asked here in the forum it seems knowing programming code would be most helpful.


recent by Roger  ·  Apr 29 '19 at 1:06 pm
Old Forum posted Apr 29 '19 at 12:46 pm

I am fairly new to the dt800 logger and therefore have done no training with regards to programming.

I have an application where i am monitoring power consumption using three power transducers outputting an analogue 0+10V signal back to the dt800 where i am adding the data form the three transducers within a channel variable to give me total power from the three.

I need to conv
recent by Roger  ·  Apr 29 '19 at 12:59 pm

I have a flow meter that gives a pulsed output every 10 liters of water passed. It is set up as a counter. I would like to not monitor the flow anymore but rather the temperatures of various parts of the system until the pump comes on (i.e. when the flow meter is not working).

Then when the pump stops working I would like measurements to start recording again. There is no set tim
recent by Roger  ·  Apr 29 '19 at 12:44 pm
Old Forum posted Apr 29 '19 at 12:23 pm
When connecting to my DT800 by modem, I always get a status not returned warning, and frequently I get a status check error which then results in the connection being closed.

When the status warning is related to the currently running job, I can usually connect successfully. But when the warning is related to a job not currently running, the connection usually fails. Any idea what might be c
recent by Roger  ·  Apr 29 '19 at 12:25 pm
StephenR posted Apr 29 '19 at 12:18 pm

I have 3 power meters monitoring power consumption and sending a signal back to DT800 where the 3 measurements are added to give total consumption.

I wish to connect an external digital display wall mounted to display the calculated total consumption. Any suggestions as to how I can achieve this as the calculated consumption is from 3 meters which give separate 0+10V back to DT800.
recent by StephenR  ·  Apr 29 '19 at 12:20 pm
Old Forum posted Apr 29 '19 at 12:09 pm

In my continuing quest to make a DT800 a thermocouple in disguise, I need to check for the possibility that one of my input thermocouple has been fried or broken.

I see a post in another forum about using a 2-wire resistance check. When I have a thermocouple (type-K) into channel 7, read as 7TK, I get a sensible reading. However, if I try and read its resistance, I am returned eithe
recent by Roger  ·  Apr 29 '19 at 12:15 pm
Old Forum posted Apr 29 '19 at 12:02 pm
What does the following sequence of LEDs indicate:

Acquiring LED flashes
Charging and card busy LEDs flash
Acquiring LED flashes
All five LEDs flash
This sequence repeats itself. A triplepush reset during this problem had no effect and we are unable to establish communications via modem with the DT800. It appeared also as if the DT800 program halted unexpectedly.


I may be crazy (see above), but it seems impossible to assign channel variable numbers with exponential notation less than 1 (ie. with a negative exponent). eg. 1CV=1E2 1CV 100.0 1CV=1E3 1CV 1000.0

Now fractional values: 1CV=0.1 1CV 0.1 But... with exponential notation, only zero is stored: 1CV=1E-2 1CV 0.0 1CV(FE7) 1CV 0.000000E0

Bug? Feature? Sunday? Also, am I correct that y
recent by Roger  ·  Apr 29 '19 at 12:01 pm
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