Internet PLC Forum

Thank you very much for the nice comments. Yes, it is always a "wish list" to go to 12-bit for both ADC and DAC. However, again it is a question of a balancing act between economics and capability. We want to maintain the product at very low cost for our OEM customers. Adding ?expensive 12-bit ADC/DAC on standard product where customers may or may not use them is not a viable option. We believe using the communication capability of the M-series PLC to access external ADC/DAC board is the best way of getting the higher analog resolution needed.

For ADC, there are a number of RS485 based, 12 to 16-bit "data acquisition" products on the market, with a wide range of possible interface including thermocoupler inputs. ?E.g:

 http://www.icpdas.com/products/7000/7000_index.htm
 http://www.rs-485.com
 http://www.dghcorp.com

There are fewer RS485 based DAC but DGH-corp and ICPDAS both have such products. Although we have not yet tested them directly we may be doing so with certain model(s) in the near future. These are usually based on simple ASCII commands and we believe it is not too difficult to program the M-series PLC to interface to such products.

Not to my knowledge yet unless there are sufficient demand. We strongly recommend using Java library since it is already available free-of-charge for our user.

The main advantage of writing in Java is that the user-interface can be compiled into an Applet that can be download from the TLServer from any browser without  requiring local installation (just like the TRiLOGI software itself, you can have both applet version and application version).

You may be able to find a 3rd party TCP/IP server that support MODBUS protocol and then you will be able to modify your current VBASIC program slightly to use the server. Try a google search... Good luck!

You can find the link of the LCD manual and dimensional drawings from the following link:

http://www.tri-plc.com/lcd.htm

The links are on the right hand side of the screen.

Go to:

http://www.tri-plc.com/trilogi.htm

and register to get the email that will point you to where you can download the Internet TRiLOGI educational version.

We sell worldwide and ship using courier service to most destination within 3-7 days. Our sales department will contact you regarding how you want to purchase from Manila.

The most fundamental concept you need to learn before using any form of "BASIC" are as follow:

1) IF  ...  THEN ....   ELSE  ...   ENDIF
2) FOR ... NEXT
3) WHILE .... ENDWHILE
4) GOTO
5) Variables and constants.

The rest of the commands are specifically related to the hardware that you need to work with.

The beauty of the Ladder+BASIC is that you don't have to be an expert in BASIC in order to use it. You'll normally use the ladder logic for normal programming and when you need to do anything that you can't achieve with the ladder logic then you go look up for the command in TBASIC that allows you to do that. You need to learn about the syntax of only those commands that you need to use and not all at once.  You can get the syntax of each command and examples in TBASIC refererence manual or press <F1> key to get helps.

Did you log on with the user name "samples" and no password? It should end with an "s".

Unless someone has made changes to the username/password in the "TLserver" this default username/password should work.

T100MD+ has two comm ports: comm1 is RS232 and comm3 is RS485. ?There is no comm2 for T100MD+ (comm2 is only available on T100MX+).

So your statement should be

Print #1 "ATO" ? ?'Initial Communication with Modem
Print #1 "ATDT6567418892" 'Dials to call ?Singapore

Of coure you need to add the outgoing international calling code (011 in USA) before you can call an international number such as the above.

The PLC will send the above string out via the COMM1 port to the modem. We have sample program in the "usr\samples\FileService_modem" folder that connect the PLC to a remote TLServer via modem. Please check out the following link for more info:

http://www.tri-plc.com/TLeval/Help/plc2modem.htm


 

Modem don't usually send AT command to the PLC. It is the PLC that send AT command to the modem.

A $199  T100MD888+ can format whatever AT command needed and send via the serial port to the modem. It can also interpret any incoming text string or binary data in whichever way you want.  It is fully under control by your TBASIC program.