Purpose
Opens a digital block (sets the value equal to 0). The block reflects the new value based on its own scan period.
You can also open SIM registers. SIM registers range from 0 to 2000. Bit values range from 0 to 15.
Syntax
OPEN block
OPEN register:bit
NOTE: When using the OPEN command to set a Digital Input block, the Digital Input block must be in Manual mode before it can be set. If you attempt to set a Digital Input block that is in Automatic mode with an OPEN command, iFIX generates an error message and takes the Program block off scan.
