Analogue Input Module
The Analogue Module is used to monitor analogue quantities in a system.
The analogue module can be programmed so that when an analogue level exceeds/drops
below a pre-programmed trigger point an alarm/seal can be generated on a Zone Input.
The analogue level can also be viewed in scaled units at any LCD terminal.
Each Analogue input is processed as a Zone Input in the system. Several modes of
operation are available allowing programmable trigger points to control auxiliary outputs
as required. If the analogue input value is too low or too high (i.e. underflow or overflow)
then the input will generate a tamper condition.
A small hystersis applies to each trigger point to avoid "state chatter".
