150
Dead Band and Overlap Band Write: WD
Section 6-1
6-1
Dead Band and Overlap Band Write: WD
Function
This command is used to write the dead band or overlap band of a control out-
put in heating and cooling control operation.
1.
Refer to the following for the designation of the dead band or overlap band
of a control output.
• If positive parameters are set with Dead Band and Overlap Band Write
(WD), the dead band of the control output will be designated.
• If negative parameters are set with Dead Band and Overlap Band Write
(WD), the overlap band of the control output will be designated.
2.
Dead Band and Overlap Band Write (WD) cannot be used at a control
point being auto
-
tuned.
Setting Data Range
Command
Response
Communications Example
In this example, the E5ZE is operated with Dead Band and Overlap Band
Write (WD) under the following conditions.
Unit no.:
1
Memory Bank no.: 2
Control Point:
3
Overlap Band:
5
°
C
Command
Response
Setting unit
1
°
C or
°
F
°
C
°
F
Default
0000
Setting data
-999 to 0999
@ W D 0 0
s
Or minus
sign (-)
Control
point
Data code
Terminator
*
Dead band or overlap band
FCS
x16
x16
Unit
Bank
Setting data
Header code
x10
x10
x10
x10
1
1
0
0
3
2
@ W D
s
*
FCS
End code
Unit
x16
x16
x16
x16
Header code
Terminator
1
1
0
0
@ 0 1 W D 2 3 0 0 - 0 0 5 4 B
s
*
-5
°
C (Overlap band)
@ 0 1 W D 0 0 5 2
s
Normal end
*