Watlow Series SD31 PID with Optional Countdown Timer - Manual (Page 24)

Wa t l o w S e r i e s S D 3 1
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C h a p t e r 5 S e t u p
Display Parameter Name
Description
Settings Range
(Integer values for Modbus
in parentheses.)
Default Modbus*
(less 40,001
offset)
Read/Write
Appears if:
Note: Some values will be rounded off to fit in the four-character display. Full values can be read with Modbus.
* 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.
Caution: Writing to registers continuously, such as ramping set points via comms, will damage the SD31 EEPROM memory. See page 59.
[Sc;Lo]
[Sc.Lo] Process Scale Low
Set the low scale for process inputs.
0.00 to 20.00 mA: if [`Sen]
is set to [`mA]
(0000 to 20000)
0.00 to 10.00V: if
[`Sen] is
set to [uoLt]
(0000 to 10000)
4.00 mA
0.00V
*73, 74
R/W (mA)
*77, 78
R/W (V) [`Sen] is set to [`mA]
or
[uolt[.
[Sc;hi]
[Sc.hi] Process Scale High
Set the high scale for process inputs.
0.00 to 20.00 mA: if [`Sen]
is set to [`mA]
(0000 to 20000)
0.00 to 10.00V: if [`Sen] is
set to [uoLt]
(0000 to 10000)
20.00 mA
5.00V
*75, 76
R/W (mA)
*79, 80
R/W (V) [`Sen] is set to [`mA]
or
[uolt].
[rg;Lo]
[rg.Lo] Units Scale Low
Set the low range for process input units.
-1999 to 9999
(-1999000 to 9999000)
(Set precision with [P;dEC],
Process Decimal Places.)
-1999 *81, 82
R/W [`Sen] is set to [`mA]
or
[uolt].
[rg;hi]
[rg.hi] Units Scale High
Set the high range for process input units.
-1999 to 9999
(-1999000 to 9999000)
(Set precision with [P;dEC],
Process Decimal Places.)
9999 *83, 84
R/W [`Sen] is set to [`mA]
or
[uolt].
[SP;Lo]
[SP.Lo] Set Point Low Limit
Set the low range for the set point.
Min. operating range (of
sensor) to
[SP;Hi] -0.100: if
{`sen} is set to {``tc}
-328 to [SP;hi] -0.100: if
{`sen] is set to {`rtd}
-1999 to [SP;hi] -0.001: if
{``sen} is set to [`MA]
or
[uolt]
(Set precision with [P;dEC],
Process Decimal Places.)
Min. operat-
ing range (J
type):
{``tc}
-328: {`rtd}
-999: [`MA]
and [uolt].
*240, 241
R/W (ther-
mocouple)
*244, 245
R/W (RTD)
*248, 249
R/W (mA or
V)
Always active.
[sP;hi]
[SP.hi] Set Point High Limit
Set the high range for the set point.
[rg;Lo] to max. operating
range (of sensor): if
{`sen}
is set to {``tc}
[SP;Lo] +0.100 to 1472: if
{`sen} is set to {`rtd}
[SP;Lo] +0.001 to 9999: if
{`sen} is set to [`MA] or
[uolt]
(Set precision with
[P;dEC],
Process Decimal Places)
Max. operat-
ing range (J
type):
{``tc}
1472: {`rtd]
999: [`MA]
and [uolt]
*242, 243
R/W (ther-
mocouple)
*246, 247
R/W (RTD)
*250, 251
R/W (mA or
V)
Always active.
[Ftr;E]
[Ftr.E] Input Filter
Select filtering action.
[`OFF] no filtering (0)
[DiSP] filter only the dis-
play value (1)
[Cont] filter the
control input values (2)
[both] (3) filter the display
and control input values [`OFF] (0) 89 R/W Always active.
[FLtr]
[FLtr] Filter Value
Set the input filter value.
0.0 to 60.0 seconds
(0000 to 60000) 0.0 *87, 88
R/W [Ftr;E] is not set to
[`OFF].