Watlow Series 945 Data Communications Manuale Utente Scaricare il pdf (Pagina 19)

How to Use Data Communications

WATLOW Series 945

Commands

Data.1 Data.2

Low Limit High Limit Code Function

AXHI Process RL value RH value Alarm High X value

±555/Deviation ±999

XLO Process RL value RH value Alarm Low X value

±555/Deviation ±999

ALM 0 No alarms occurring Writing a 0 will clear all

1 A1H occurring alarms if the alarm

2 A1L occurring condition no longer

4 A2H occurring exists.

8 A2L occurring

AL1 0 2 0 Alarm 1 = deviation

1 Alarm 1 = process

2 No Alarm 1

AL2 0 2 0 Alarm 2 = deviation

1 Alarm 2 = process

2 No Alarm 2

ATMN 1 1 1 Auto/Manual toggle must

be sent twice within 5 sec.

AUT 0 3 0 No auto-tuning

1 Slow response tuning

2 Medium response tuning

3 Fast response tuning

CAL* -180°F 180°F Calibration offset

-100°C 100°C

-180 Units 180 Units

CF 0 1 0 Display °C

1 Display °F

CLUP Yes No SPC control limits update

X 1 60 Output X cycle time

DAY 1 31 Day of the month/data log

DB 099°F Dead band

055°C

0 Units 99 Units

DEC 0 2 0 No decimal point

1 0.0

2 0.00

X 0.00 9.99 Output X derivative

DFL 0 1 0 US prompts

1 SI prompts

HOUR 0 23 Hour for data logging

HYS

X 1°F99°F Output X switching hys.

1°C55°C

1 Unit 99 Units

INDC 1 1 1 UP/DOWN key action

INT 0.0 60.0 Time interval in minutes

for logging

0.0 = logging OFF

X 0.00 9.99 Output X integral

"=" Command

"The "=" Command sets a specific Series 945 parameter (Data.1) to a specific

value (Data.2) when the unit is in the HOLD mode. Use Tables 5 and 6 to select

parameters (Data.1) in the lefthand column. In Table 6 the low and high limit or

code values (Data.2) are in the three center columns.

NOTE:

An X means it

applies to either

Output 1 or

Output 2.

* When the 945 RTD

input is 0.1

°, these

parameters will have

a decimal point to

the left of the least

significant digit.

Table 6 -

"=" and "?" Com-

mands. These are

READ or WRITE

commands. See

Table 4 for more "?"

Commands.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 27 28

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