Watlow Series F4P - Manual (Page 37)

Wa t l o w S e r i e s F 4 P P a r a m e t e r s 6 . 1 1
✔ Note: For more information about how parameter settings
affect the controller’s operation, see the Features Chapter.
Modbus
Register
Range read/write Conditions for
Parameter Description (Modbus Value) Default (I/O, Set) Parameters to Appear
Active: Always. 880 r/w Bumpless (0) Bumpless Transfer (0)
Fixed (1) Failure Mode
Select how the outputs
will behave if an input
error switches the con-
troller to manual mode.
Active: Always. 304 r/w 90% (90) 50 to 150%
(50 to 150)
Autotune Set Point
Set percent of set point
to auto-tune to.
Active: Always. 454 r/w Restore Set
Point (0)
Restore Set Point (0)
Reverse Bumpless (1) Manual to Auto Transfer
Select how the set point
will be determined when
control switches from
manual to auto mode.
Active if one or both control out-
puts is set to cool [direct].
453 r/w -100.0%
(-1000)
-100.0% to 0.0%
(-1000 to 0) in tenths
Maximum Transfer Cool
The maximum cool out-
put power when control
is switched from auto to
manual mode.
Active if one or both control out-
puts is set to heat [reverse].
452 r/w 100.0%
(1000)
0.0% to 100.0%
(0 to 1000) in tenths
Maximum Transfer Heat
The maximum heat out-
put power when control
is switched from auto to
manual mode.
Active if input type is either RTD
or thermocouple.
1923 r/w Yes, Upper
Display (1)
No, Upper Display (0)
Yes, Upper Display (1) Show °F or °C
Choose whether to dis-
play or hide °C or °F in
top display.
Active: Always. 901 r/w °F (0) °F (0)
°C (1) °F or °C
Choose temperature
scale.
Active: Always. 900 r/w US (0) US (US will be in
Reset/Rate) (0)
SI (SI will be in Inte-
gral/Derivative) (1)
PID Units
Choose units for PID
control.
Main > Setup >
System
System
Setup Page Parameters