ascii read

sheirj

Member
Join Date
Nov 2005
Location
Wisconsin
Posts
52
I am having trouble with ascii read. I do have ascii write working.
I am using slc 5/05 processor with hyperterminal on a laptop. I talked my local rep into a little free time and he got it working on his trainer but when I used the same program at the plant, it doesn't work. The hyperterminal settings baud rate etc, match the processor again ascii write works. I'm wondering if I have missed some set up in the processor. Here is what I have so far. Channel config screen under general tab channel 0 is DF1 full duplex, mode is user, user driver is ascii, mode attention charactor is \1b, system mode charactor is S and user mode charactor is U. Under channel 0 system tab DF1 full duplex, 19200 baud, no parity, 1 stop bit. Under the Channel 0 user tab, Driver is ascii, now here is where I don't understand what the settings are but here goes. Termination charactor 1 \d append1 is \d and term 2 is \ff append2 is /a. Protocol control line is no handshake delete mode is ignore. neither echo or
xon/Xoff is checked. Below is my ladder.
Thanks in advance.
Shierj
 
Last edited:
- change CHARACTERS in ACB to 1 (something greater than 0)
- change CHARACTERS READ in ARD to something greater than 0
- make sure B3:0/0 and B3:0/1 are on
- use some comments
 
I am not able to change the charactor value in ACB and charactors read in ARD. I believe these are the charactors read into buffer or read if it sees them. Which is the problem. thanks though
 

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