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PPC-2000 User’s Guide Chapter 5: LogicPro and Modbus Reference
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 191
Table 5.29 Alarm Bit Definitions
ç
CAUTION!
Failed sensor alarms are only checked on inputs
associated with channels. Any input that is not
selected as the
PV Source
of a channel will not
generate failed sensor alarms.
Alarm Control Flags
Each Alarm Control register contains a 16-bit word. The bits
determine the behavior of the various alarms. Setting an Alarm
Control bit to 1 makes the corresponding alarm behave as a
control. Setting a bit to 0 makes it behave as a standard alarm.
Table 5.30 on page 192 describes the difference between
standard alarms and controls. See Table 5.29 for alarm bit
definitions.
Bit Alarm Name
1 (least significant) Spare
2 Spare
3 Low deviation
4 High deviation
5 Low process
6 High process
7 Spare
8 Spare
9 T/C break (or open)
10 RTD open
11 RTD short
12 Spare
13 Spare
14 Ambient Temperature
15 Spare
16 (most significant) Spare
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