john

I want to turn on a coil at a time specified by an HMI time function entry variable (HH:MM). I thought it should be easy, but I need help. The value of this variable doesn't appear to me to be either RTC or anything else I can decipher. For example: 00:00 = 0, 00:10 = 16, 01:00 = 256, 12:00 = 4608. What is this value? Or how can I compare this to SI 32 (current time HH:MM)? I can't find any information on HMI timer function variables in the help document. But I did find a very promising example on the 'Clock: Indirect Function Example' page. Unfortunately the help document is incorrect -- the indirect time of day function in the V130 doesn't automatically appends a mysterious (undocumented) second operand -- which I assume is a stop time, and which I can't have. HELP!!

Is there a UTC-formated system variable (ladder logic) for the current time in the V130? Or do I need to 'paste' something together by converting 4 RTC variables (SI30, 31, 32, 33) into UTC and adding them up? Application is a time stamp.

Phil, You're suggestion was great. It works very well. Thanks. John

HELP! How does one 'exit a variable' while it is active on a V130 screen, ... via ladder logic, not the keyboard? According to the 'V120 and V130' topic page in the help manual: "If a Legal Entry bit is defined, SB 94 does not turn ON if the entered value is out of range. The keypad stays on screen until a legal value is entered. You can use SI 45 in conjunction with a Compare function to exit the variable." How is this done?

Thanks, but apparently I didn't express myself well enough. The measurement limits of a variable represented in a bar chart (as you pointed out) or a meter graphic are not the same as process boundaries (aka upper and lower control limits in SPC lingo). Some common domestic examples are 1) an auto tachometer with a 'redline', and 2) water pressure gage at home with upper and lower boundaries marked in red. Industrial applications employ a wide range of sensors and other measurements to track varaibles that can (and often do) exceed the desired operating range. I would have thought that this would be a standard feature in a simple bar or meter graphic.

I'm new to programming in Visilogic and am working with the V130. I'm sure I must have overlooked a way to show min and max process variable bounds (or limits) on a bar graph or a meter. The only method I've come up with is to manually place lines over the graphic. But this isn't viable because the display will be used for different objects (in my case fans and pressure sensors) each of which will have uniquely defined min and max range limits as well as min and max process boundaries. Overlaying mulitple bar graphs would solve this, but Visilogic apparently (as far as I can determine) will not allow this. Get anyone suggest how to incorporate process boundaries into these graphic elements? John