Internet PLC Forum

I have not been able to get the requird result yet.I have explained below what i have done and if you can let me know where i have been going wrong that would be great i have no clue why you say i should use a for loop...
I have attached my ladder logic in the attached diagram.The message1 function sends out PRINT #1 "AT+CMGS="+CHR$(34)+"+44******"+CHR$(34)+CHR$(13) when the input goes to 1.
Then i use a timer of 2 sec to wait for a response from the modem (waiti for the > character).After which message 2 function executes.Message 2 has
A$=INCOMM(1)
B$=CHR$(62)
IF STRCMP(A$,B$)=0 THEN
PRINT #1 "HELLO"+CHR$(26)
ENDIF   

This does not seem to work at the moment,however if my message2 function has only PRINT #1 "HELLO"+CHR$(26)
it sends the message hello(it assumes that the > is recieved in this case).
please help

 

Hello can you suggest me a power supply to get a 24vdc battery backed power supply (input from 230Vac).I want a pretty compact power supply(about 10 cm by 10 cm).Maybe i can get one made if you have the link of circuit diagrams from making such a battery backed power supply.Been trying to find this online but not happening.Thanks

I need to use the PRINT or the INCOMM keyword to check if the modem which is serially connected to my COMM1 has responded.That is when i send an AT+CMGS="+44XXXX" msg from my PLC it sends an response character(>),after which i send the required message using the print command.I just need to check if the character is in COM1 port without deleting it from here(the print and incomm seem to remove it from port1).Is there another keyword to do this?

Also the function(send SMS) is given as below
PRINT #1 "AT+CMGF="+"1"
PRINT #1 "AT+CMGS="+CHR$(34)+"+447584133758"+CHR$(34)
PRINT #1 "HELLO"+CHR$(26)
      Clock 1min                  sendSMS
|-------| |------------------{dCusF}

Is this code alright? It does not seem to be sending a message to my phone.

PRINT #1 "AT+CMGF="+"1"
PRINT #1 "AT+CMGS="+CHR$(34)+"00447584133453"+CHR$(34)
PRINT #1 "HELLO"+CHR$(60)+CHR$(26)+CHR$(62)
 This is what i send to COM1 but dont get a response on my phone,however when i send the same commands using hyper terminal i can send the message.Once i transfer the program i simulate it(continue run).What might be the problem?

i am not receiving any kind of response from my FMD88-10 PLC when i connect it using RS232 cable.It was working fine all these days but now its not responding at all.I can see the RTC error LED glowing does this mean something?I am in the UK and my project deadline is soon approaching:(

Hello i was looking to interface the GSM Modem with the FMD-8810 PLC.The basic idea is to monitor a range of sensors with the FMD88-10 and put on the digital output if any of the sensors cross a particular threshold value.Now i was wondering how do i send this as an alarm message(saying that the light level is low for example) to a GSM mobile.Do i need a gsm modem with many inputs, where each input of the gsm modem is connected to each digital output of the plc? Can this modem which i have attached serve this purpose.how do i go about this? thanks

I have done this.But when the PIR senses something and when the red light in the PIR is about to turn off, the digital input light in the plc turns on for a fraction of a second.