Rockwell-automation 5370-UPK CVIM USER-PAK Option Manual do Utilizador descarregar pdf (Página 100)

Chapter 8

Defining Strings for Serial Ports and Viewports

8–24

Selecting the Interval

Once you have defined the event source and source condition, you can

further define the event by specifying an interval for sending the string. You

specify the interval by using the interval box (the box which reads Print

Every ...) on the Event menu.

What the interval is – When you first access the Event menu, the interval box

reads Print Every 1. At this setting, the CVIM module checks the event

condition at the completion of each inspection to determine if the string is

sent (see the previous sections, “Selecting Event Source” and “Selecting

Source Condition”). You can specify that the CVIM module does not check

the event (and thus does not send the string) after each inspection, but only

checks the event at some interval – every third inspection, every fifth

inspection, etc. You do this by setting the interval; the range is 1 to 32767.

For example, if you set the interval box (the Print Every 1 . . . box in the

diagram) to read Print Every 5, the CVIM module does not check the event

for every inspection, but only for every fifth inspection. This checking is

based on the count of processed triggers for the respective toolset.

To set the interval, pick the interval box, then select the interval using the

calculator pad.

Calculator Pad

Print Every ... box

Value Out of Range: If you try to enter a number which is not valid,

such as a number greater than 32767, the calculator pad will flash the

message – Value Out of Range. If this happens, pick an appropriate

valid number, and then pick the Enter key again.

Special Cases for serial port strings only:

0: Enter the value “0” to transmit the string upon entry to run mode.

–1: Enter the value “–1” to transmit the string upon entry to setup mode.

These two special cases allow you to send messages upon entry to the run

mode and setup mode. You could use these capabilities, for example, to

send a message to a computer, upon entering run mode, which would

open a specific file for data collection. Then, upon entering setup mode,

you could send a message to close the data collection file.

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Rockwell-automation 5370-UPK CVIM USER-PAK Option Manual do Utilizador Página 100