Technical Reference
Altering a Program
1
NOTE:If you have theopt ional batterybacked clock, thetime may alreadybe correct.
You cannot alter data or parameters while the program is running. The 1500
must be in the HALT condition.
If you want to move to a diierent Step
#
to see what is programmed there and
then modify that step, enter the
CHG
DATA mode. Then press the
FCTN
key
until the
“NX”
appears in the Function Display. Place the Step
#
into the Data
Display and press ENTER.
If you want to completely clear a Step of all programmed data to re-program it, go
to the CHG DATA mode and to the appropriate Step
#
as described above. Then
press the CLEAR key. All programmed data (for this step only) will clear, and
you
can now re-program it.
Figure 21
-
Change Parameter
.
(CHG
PARA)
Mode
Flow Diagram
Programming the Change Parameter Mode (CHG PARA)
Press the mode key to select the Change Parameter (CHG
PARA)
mode. The TIME
LED will be ON. The FUNCTION and DATA displays will show the real time of day.
Press FCTN to produce the time prompt,
HR,
in the FUNCTION display. You’ll enter
the real time of day here, beginning with hours.
1
See Change Parameter Fig. 16.
Series
1500
CHG
PARA
(Change Parameter) SoftwareSelects MNTR
DATA,
CHG
DATA
or CHG
PARA
Mode.
1
Pb
1
RS
1
RT
1
rb
1
CT
1
db
1
CA
L
1H
1H
Set 1H
Heat PID 1H
1H
t Deadband
1
Set Calib
1
Offset
1C
f
Set
1
1C
CoolPID
1C
1C
1C
Selects any prompt
in a mode.
J
Set Calib
Gffd
Select values for
the DATA display.

m

om
J
GA
=
6
f
GA-2
+i--•
Channel 2
Dual
PID
(DIP
4
ON)
Places values from
the DATA display
into memory.
i
2H
4
2H
!
Set
2H
[
Heat PID
2H
1
Set Deadband {2 2
:
Set
Calib.
2
Offset
2c
Set
2c
L
Cool PID 2C
2c
2c
Deadband
2
Set Calib.
2
offset
J3
NOTE:
Only RTD version
1500s
have the TT
prompt
(2-channel
temperature
control.
fl
46
WATLOW Series 1500 User’s Manual
Programming, Chapter 4