Watlow Series SD • 38 • Chapter 6 Operations
Display Parameter name
Description
Settings Range Default Modbus*
(less 40,001 offset)
Read/Write
Appears if"
[dE;CL]
[dE.CL]
Derivative Cool
Set the PID derivative time in
minutes for the cool outputs.
0.00 to 9.99 minutes (0000
to 99990)
0.00: disabled
0.00 *230, 231 R/W At least one output is
set to [CooL], [CL;m]
is set to [`PId],
and [Unit] is set to
[``SI].
[dB;CL]
[db.CL]
Dead Band Cool
An offset of the cooling pro-
portional band from the set
point.
0 to 999
(0000 to 999000)
0 *281, 282 R/W At least one output
is set to [Cool]
and [CL;m] is set to
[`PId].
[C;hyS]
[C.hyS]
Cool Hysteresis
Set the control switching hys-
teresis for on/off control. This
determines how far into the
“on” region the input needs to
move before the output actu-
ally turns on.
1 to 999°F if [`Sen] is
set to [``tc] or [`rtd]
(1000 to 999000)
0.000 to 999.9 if [`Sen] is
set to [`ma] or [uolt]
(0000 to 999000)
1
1.000
*236, 237 R/W
*238, 239 R/W
At least one output
is set to [CooL]
and [CL;m] is set to
[on;oF].
[ProP]
[ProP]
Proportional Term
View the active proportional
term for PID diagnostics.
0.000 to 1.000****
(0000 to 1000)
NA 258 R Any output is set to
[heat] or [Cool].
[``it]
[ it]
Integral Term
View the active integral term
for PID diagnostics.
0.000 to 1.000****
(0000 to 1000)
NA 259 R Any output is set to
[heat] or [Cool].
[``dE]
[ dE]
Derivative Term
View the active derivative
term for PID diagnostics.
0.000 to 1.000****
(0000 to 1000)
NA 260 R Any output is set to
[heat] or [Cool].
[ent1]
[Ent1]
Event Output 1***
Set Event Output 1 to an on
or off state.
[~off] (0) Output is off
[~~on] (1) Output is on
[~off]
(0)
351 R/W Profiling version only.
(SD_ R - _ _ _ _ - _ _ _
_ ) Output 1 is set to
[Ent1].
[ent2]
[Ent2]
Event Output 2***
Set Event Output 2 to an on
or off state.
[~off] (0) Output is off
[~~on] (1) Output is on
[~off]
(0)
352 R/W Profiling version only.
(SD_ R - _ _ _ _ - _ _ _
_ ) Output 2 is set to
[Ent2].
[ent3]
[Ent3]
Event Output 3***
Set Event Output 3 to an on
or off state.
[~off] (0) Output is off
[~~on] (1) Output is on
[~off]
(0)
353 R/W Profiling version only.
(SD_ R - _ _ _ _ - _ _ _
_ ) Output 3 is set to
[Ent3].
[A1;hi]
[A1.hi]
Alarm 1 High
Set the high alarm set point.
Deviation: 0 to 9999 (0000
to 9999000)
Process: range of sensor, if
[`SEN] is set to [``tc]
or [`rtd]
-1999 to 9999 if [`SEN] is
set to [`Ma] or [uolt].
(-1999000 to 9999000)
999 (dev)
1500 (pro)
*100, 101 R/W
(dev)
*104, 105 R/W
(pro)
[Ot`1] is set to
[dE;AL] or [Pr;AL].
Note: Parameters appear in the Operations Page only if activated from the programming page. See page 22 for Operations Page defaults.
Note: Some values will be rounded off to fit in the four-character display. Full values can be read with Modbus. All temperature param-
eters through Modbus are in °F, by default.
* Low register numbers contain the two higher bytes; high register numbers contain the two lower bytes of the four-byte integer. Decimal
precision is implied at three decimal places unless otherwise noted.
** Static set point version only (SD_C-_ _ _ _- _ _ _ _ ).
*** Profiling version only (SD_R-_ _ _ _- _ _ _ _ ).
**** This value multiplied by 100 equals the percent power.
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