Search found 4 matches

by mmcginty
Sat Feb 15, 2014 11:28 pm
Forum: Software issues
Topic: GET or POST from ARMweb
Replies: 8
Views: 26646

Re: GET or POST from ARMweb

Well let's put Mike on the horn! :-) I'm just wondering why it couldn't just not ACK an inbound request frame when it can't process the request? That way the requesting client would assume the frame was lost and would retry it after timing out. The possibility of an indeterminate response makes it d...
by mmcginty
Tue Feb 11, 2014 4:45 pm
Forum: Software issues
Topic: GET or POST from ARMweb
Replies: 8
Views: 26646

Re: GET or POST from ARMweb

Nice! I reviewed the example source, looks mostly straight forward... Just to make sure I understand, it says (paraphrased) ARMWeb sends a SYN frame, waits up to 15 seconds for SYN ACK, sends the HTTP request frame[s] and waits up to 5 seconds to receive ACK[s], then the inbound response is received...
by mmcginty
Thu Jul 18, 2013 4:40 am
Forum: Other Hardware interfaces
Topic: Process automation instruments
Replies: 2
Views: 17102

Process automation instruments

There is a fairly large family of automation monitor and control devices that communicate by varying current. The transmitter allows the receiver to draw from 4 - 20 mA at 24V, and the receiver infers the transmitted value from the level of current it's able to draw. Seems to me it'd be difficult to...
by mmcginty
Wed Dec 05, 2012 3:16 pm
Forum: Projects
Topic: reading a voltage with a SuperPRO
Replies: 8
Views: 26655

Re: reading a voltage with a SuperPRO

Oh man I hate this forum software, if you take too long drafting a post your login times out, it redirects you to the login page, and all your input is gone! It isn't that hard to preserve posted data across a redirect, embed the inputs from the original form as hiddens in the login form, save them ...