EPL stands for the "Eltron Programming Language" and is a proprietary programming language used to communicate to Zebra (formerly Eltron) branded printers
Questions tagged [epl]
121 questions
2
votes
1 answer
Creating instances of Esper's epl
I am playing around with Esper, learning how to use more advanced concepts.
I have a program that fires mock stock events of 3 different stocks. I currently have a module with match_recognize pattern EPL that looks like this:
module…
jocund
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- 6
2
votes
2 answers
2
votes
0 answers
Esper Java EPL Pattern
I want to process the following JSON Objects :
[
{
id: "38485ndndndn4848",
value : 120, // kw
ts: 1456983266,
sensor_id: 20
},
{
id: "48485ndndndn4848",
value : 189, //kw
ts: 1456984286,
…
user4958578943093890
- 21
- 2
2
votes
1 answer
Esper EPL Query for Time(t) and Time(t-1)
I am trying to implement an EPL query that can pick up the avg for Time(t) & Time(t-1).
For example:
a) in the first 5 seconds (seconds 0-5) there are 2 events with an avg of 12
b) in the next 5 seconds (seconds 5-10) there are 3 events with an…
Gene Bo
- 11,284
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2
votes
0 answers
Printing To Zebra Printer With GW Command In VB6
I am trying to print an image to a Zebra label printer through the serial port using VB6. I have tried various file formats (different bit depths of BMP), getting closest with an image with a bit depth of 4 (something actually prints, doesn't look…
Sam
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2
votes
1 answer
How to convert a png file to .GRF file used for zebra printer
I use Zebraprinter for printing the labels. My printer is 203dpi. For last couple of days i was searching in internet and i found there are Zebraprint utilities.. to convert to DFR format.. which sucks.. they are not fully explaining how to do…
Stacy Kebler
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2
votes
2 answers
How to read GC420t printer's status?
I'm using LibUsbDotNet to communicate with my GC420t Zebra printer.
It works great when it comes to printing:
MyUsbDevice = UsbDevice.OpenUsbDevice(MyUsbFinder);
if (MyUsbDevice == null) throw new Exception("Device Not Found.");
IUsbDevice…
Kilazur
- 3,089
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2
votes
4 answers
Convert image to GRF format
I have a Zebra Gk420t printer that allows me to make stickers and I need to print an image on them. I read that the images must be in GRF format (pure hex).
Someone knows how can I convert the images to GRF format in Linux? I read about Ztools…
Angel
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2
votes
1 answer
EPL - Control 128 barcode length
I'm using EPL to print directly barcode from a Zebra printer (LP 2844 to be more specific). The problem I'm having is that I can't control the physical length of the barcode.
For example, these 2 lines of code will print 2 barcodes with different…
Quannt
- 2,035
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2
votes
2 answers
Sending commands directly to Zebra EPL
I am trying to send commands directly to a Zebra TLP2844 printer. I followed the suggestion made here and my final code came to be as follows:
var
cm: String;
p: TPrinter;
i: integer;
begin
p := Printer;
p.BeginDoc;
for i := 0 to…
Ricardo Acras
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1
vote
1 answer
Is there a way to get time since insert of an event in NEsper?
I'm trying to use NEsper and I want to create statements that takes time since insert as a return field.
ex:
select avg((insertTime - now)) as timeElapsed
from Blah.win:time(1 min)
Is this possible? I can hack around getting insertTime but is there…
teriyaki
- 155
- 8
1
vote
0 answers
Printing a PDF with exact dimensions directly using QZ tray with raw EPL command miss-aligns PDF on label
I'm trying to print a single-page PDF with a specific dimension onto a label (or ribbon). Let's say for this example the dimensions are 0.63" wide and 11.81" long.
I'm using QZ Tray to handle printing directly from the browser.
The problem
The…
Martie
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1
vote
1 answer
How to automatically send EPL files to Zebra Printer in MacOS
I need help with the following.
My Web-based ERP software generates a EPL file to print shipping labels. The problem that I'm having is how to automatically send the EPL file to the Zebra Label Printer once it generates using MacOs Catalina. I…
Carlos Sosa
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1
vote
1 answer
Zebra LP2844 will not print EPL2 commands ( Page mode ), only EPL1 ( Line mode) works
I have an LP2844 that seems to take a print job just fine, but ignores it, I don't get any errors, and no change to the LED on the printer to indicate that it got the message.
The diagnostic prints out when I hold the button down at start up, so I…
Matthew Carlson
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1
vote
1 answer
Optional values with Esper
Is there any support in Esper for properties with Optional values?
I'm building a POC with Esper, using Scala, and I have the EPL query working with non-optional values. I have a simple object that I'm using to test with:
case class…
smur89
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