Chapter 4. Ladder Diagram (LD) Programming
94 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual GFK-2950C
4.4.3 High and Low Alarm Contacts
The high alarm contact (HIALR) is used to detect a high alarm associated with an analog reference.
Use of this contact and the low alarm contact must be enabled during CPU configuration.
A high alarm contact passes power flow if the high alarm bit associated with the analog reference is
ON.
The low alarm contact (LOALR) detects a low alarm associated with an analog reference. Use of
this contact must be enabled during CPU configuration.
A low alarm contact passes power flow if the low alarm bit associated with the analog reference is
ON.
Operands
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