Digital inputs of switches and IPLOG monitoring units can be switched to ALARM mode supporting balanced loops used in alarm systems.
It is basically the analog inputs with a variable resistance of connected alarm loops in the range of 0 ....30kΩ. The method of loop balancing and the resistance corresponding to separate statuses can be easily set in the application SIMULand.
Examples:
Double balanced zone with failure signaling
Double balanced zone with failure and masking signaling
Example of setting a balanced loop
Red text in the menu mean that the settings are not saved to the device.