Watlow Series 942 Data Communications - Manual (Page 19)

19
How to Use Data Communications WATLOW Series 942
Commands
* When the 942 RTD
input is 0.1°,
these
parameters will have
a decimal point to
the left of the least
significant digit.
NOTE:
An X means that it
applies to either
Output 1 /Auxiliary 3 or
Output 2/Auxiliary 4.
Table 5 -
"=" and "?" Com-
mands. These are
READ or WRITE
commands. See
Table 4 for more "?"
Commands.
Data.1 Data.2
Low Limit High Limit Code Function
AXHI Process rL value rH value Alarm High X value
0 to 999
AXLO Process RL value RH value Alarm Low X value
±555/Deviation ±999
ALM 0 No alarms occurring Writing a 0 will clear all
1 AL1H occurring alarms if the alarm
2 AL1L occurring condition no longer
4 AL2H occurring exists.
8 AL2L occurring
AL1 0 1 0 Alarm 1 = deviation
1 Alarm 1 = process
AL2 0 1 0 Alarm 2 = deviation
1 Alarm 2 = process
AUT 0 3 0 No auto-tuning
1 Slow response tuning
2 Medium response tuning
3 Fast response tuning
CAL* -99°F 99°F Calibration offset
-55°C 55°C
-55 Units 55 Units
CF 0 1 0 Display °C
1 Display °F
CTX 1 60 Output X cycle time
DB 0 99°F Dead band
0 55°C
0 Units 99 Units
DEC 0 2 0 No decimal point
1 0.0
2 0.00
DEX 0.00 9.99 Output X derivative
DFL 0 1 0 US prompts
1 SI prompts
ENTX 0 1 0 Event Off
1 Event On
GSD 0 99°F Guaranteed Soak Dev.
0 55°C
0 Units 99 Units
HYSX 1°F 99°F Output X switching hys.
1°C 55°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
"=" Command
"The "=" command sets a specific Series 942 parameter (Data.1) to a specific
value (Data.2) when the unit is in the HOLD mode. Use Tables 4 and 5 to
select parameters (Data.1) in the lefthand column. In Table 5 the low and high
limit or code values (Data.2) are in the three center columns.