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Alarm status, Ambient sensor reading, Analog input – Watlow CPC400 User Manual

Page 148

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Chapter 5: Menu and Parameter Reference

CPC400 Series User’s Guide

134

Watlow Anafaze

Doc. 0600-2900-2000

Alarm Status

Indicates whether an alarm is active. Table 5.19 shows the
bit to set or read for each alarm. This parameter is avail-
able only for serial communications and LogicPro pro-
grams. See Bit-Wise Values on page 78 for information on
reading or setting this parameter.

Values: Not active (0) or active (1)
Modbus Address (Loops 1 to 9): 40392 to 40400
Parameter Number: 23
LogicPro Driver: Database
LogicPro Address (Loops 1 to 9): 23.1 to 23.9

Table 5.19

Bit Positions for Alarm Status and
Alarm Acknowledge

Ambient Sensor Reading

This read-only parameter indicates the temperature mea-
sured by the cold-junction compensation sensor located
near the analog input terminal block.

This parameter is available only for serial communications
and LogicPro programs.

Values: Temperature in tenths of a degree Fahrenheit. To
convert to Celsius, use the formula °C = 5/9(°F - 32).
Modbus Address: 40579
Parameter Number: 34
LogicPro Driver: Database
LogicPro Address: 34.1

Analog Input

Indicates the value measured by the sensor after filtering
and scaling. This parameter is read-only.

Alarm

Bit

Low Deviation Alarm

Third

High Deviation Alarm

Fourth

Alarm Low

Fifth

Alarm High

Sixth

Thermocouple Reversed

Seventh

Thermocouple Shorted

Eighth

Thermocouple Open

Ninth

RTD Open

Tenth

RTD Shorted

Eleventh