sending strings via socket

Prasanna

Hi,

i want to send the variable value through socket. but i cannot.
For example, a=10
socket_send_string("move(a)")

instead of receiving move(10), i received move(a).

correct me if am wrong.
Note: UR3 e series controller

matthewd92

The reason is you are sending the string of “move(a)”, this doesn’t automatically equate to “move(“ + a + “)”. The program does not know that you want to concatenate a variable inside that, you will need to tell it this using script functions from UR. 

a=10

Msg= str_cat(str_cat(“move(“,a),”)”) #Msg would be “move(10)” now

socket_send_string(Msg) #No quotes, we are sending the value of the variable Msg

Make sense?

matthewd92

So the UR function str_cat, takes two arguments, so you would just continue to nest the functions together to get enough arguments.

Also, UR does not allow the use of `+` with strings like other languages do, string manipulation is actually a fairly recent addition to the script language, I think 3.8 but it may have been 3.7.

So for example:

a = 10
b = 20
c = 30
msg = str_cat(str_cat(str_cat(str_cat(str_cat(str_cat("move(",a),","),b),","),c),")")
#Result of msg is move(10,20,30)
socket_send_string(msg)

Prasanna

Thanks Mathew.....It's working

Prasanna

But it would be better if i use something like + symbol to concatenate

Prasanna

Hi mathew,

sorry to disturb you
How to concatenate 3 variables
like "move(a,b,c)"

Prasanna

Thanks Much Matthew.....

Any idea on the below link
https://dof.robotiq.com/discussion/1573/error-in-socket-open/p1?new=1