Watlow Series PD User Manual
Page 176
Name and Description
Web Page
Range (Scaling)
Iterations
Default
EIP Decimal (Hex)
Modbus
EIP Data Type
Access
Digital Setpoint
Set the set point that will take effect when this
digital input is activated.
Digital Input {3 or 4}
Configuration
-30,000,000 to 30,000,000
(/1000) Depends on
sensor type.
Digital Input 3
Digital Input 4
75,000
103/1/16 (67/1/10)
103/2/16 (67/2/10)
366-367
386-387
DINT
R/W
Device Configuration > Control Loops > Loop {1 or 2} Loop Settings
Loop Action
Select the action of the loop as Indirect (heat only),
Direct (cool only) or Dual (Heat and Cool).
Control Loop {1 or 2}
Configuration
Off (0)
Heat (Indirect) (1)
Cool (Direct) (2)
Heat/Cool (Indirect/Direct)
(3)
Loop 1
Loop 2
Off (0)
106/1/3 (6A/1/3)
106/2/3 (6A/2/3)
653
773
UINT
R/W
Loop Heat (Indirect) Algorithm
Select the algorithm to use for heat (indirect)
control.
Control Loop {1 or 2}
Configuration
On/Off (0)
PID (1)
Loop 1
Loop 2
PID (1)
106/1/1 (6A/1/1)
106/2/1 (6A/2/1)
651
771
UNIT
R/W
Loop Direct (Cool) Algorithm
Select the algorithm to use for cool (direct) control.
Control Loop {1 or 2}
Configuration
On/Off (0)
PID (1)
Loop 1
Loop 2
PID (1)
106/1/2 (6A/1/2)
106/2/2 (6A/2/2)
652
772
UNIT
R/W
Failure Latching
Select whether input errors clear automatically
when the input signal is valid again.
Control Loop {1 or 2}
Configuration
Off (0)
On (1)
Loop 1
Loop 2
Off (0)
106/1/7 (6A/1/7)
106/2/7 (6A/2/7)
660
780
UINT
R/W
Output Transition from Auto Mode
Select how the output will respond to an input
failure
Control Loop {1 or 2}
Configuration
Off (0)
Fixed Power (1)
Bumpless Power (2)
Loop 1
Loop 2
Off (0)
106/1/6 (6A/1/6)
106/2/6 (6A/2/6)
658
778
UNIT
R/W
Failure Fixed Power
Set the output power level that will take effect if
Output Transition from Auto to Manual is set to
Fixed Power and there is an input failure.
Control Loop {1 or 2}
Configuration
-10,000 to 10,000 (/100)
Loop 1
Loop 2
0
106/1/8 (6A/1/8)
106/2/8 (6A/2/8)
661
781
INT
R/W
Set Point: Limit Low
Set the minimum auto (closed loop) set point
allowed.
Control Loop {1 or 2}
Configuration
-30,000,000 to 30,000,000
(/1000) Depends on
sensor type.
Loop 1
Loop 2
Minimum for
sensor type
106/1/4 (6A/1/4)
106/2/4 (6A/2/4)
654-655
774-775
DINT
R/W
Set Point: Limit High
Set the maximum auto (closed loop) set point
allowed.
Control Loop {1 or 2}
Configuration
-30,000,000 to 30,000,000
(/1000) Depends on
sensor type.
Loop 1
Loop 2
Maximum for
sensor type
106/1/5 (6A/1/5)
106/2/5 (6A/2/5)
656-657
776-777
DINT
R/W
On/Off Hysteresis: Heat (Indirect)
Set the control switching hysteresis for on/off, heat
(indirect) control. This determines how far into the
"on" region the input needs to move before the
output turns on.
Control Loop {1 or 2}
Configuration
1,000 to 99,000 (/1000)
Loop 1
Loop 2
3,000
106/1/9 (6A/1/9)
106/2/9 (6A/2/9)
662-663
782-783
DINT
R/W
On/Off Hysteresis: Cool (Direct)
Set the control switching hysteresis for on/off, cool
(direct) control. This determines how far into the
"on" region the input needs to move before the
output turns on.
Control Loop {1 or 2}
Configuration
1,000 to 99,000 (/1000)
Loop 1
Loop 2
3,000
106/1/10 (6A/1/A)
106/2/10 (6A/2/A)
664-665
784-785
DINT
R/W
Start Autotune
Activates autotuning of the PID values.
Control Loop {1 or 2}
Configuration
No (0)
Yes (1)
Loop 1
Loop 2
No (0)
101/1/36 (65/1/24)
101/1/44 (65/1/2C)
82
96
UINT
R/W
Autotune Set Point
Set Autotune set point in percent.
Control Loop {1 or 2}
Configuration
50 to 150
Loop 1
Loop 2
90
106/1/11 (6A/1/B)
106/2/11 (6A/2/B)
666
786
INT
R/W
PID Sets
Select to use single or multiple PID sets for the
loop.
Control Loop {1 or 2}
Configuration
Single (0)
Multiple (1)
Loop 1
Loop 2
Single (0)
106/1/12 (6A/1/C)
106/2/12 (6A/2/C)
667
787
UINT
R/W
SERIES PD with EtherNet/IP
Addressing Information (rev c) 174