Honeywell dcp100t Operator's Manual page 32

Message
Parameter
Lock Value
or
NOTES ON CONTROLLER DEFINE MODE PARAMETERS
1. The Process Variable Offset value should be chosen with great care. Any adjustment to
this parameter is, in effect, a calibration adjustment. Injudicious application of values to
this parameter could lead to the displayed process variable value having no meaningful
relationship to the actual process variable value. There is no front panel indication when
this parameter is in effect (i.e. has been set to a non-zero value).
2. These parameters are applicable only if the secondary control (COOL) output is fitted.
3. These parameters are not applicable if Proportional Band 1 has been set to 0 (i.e.
ON/OFF control).
4. This parameter is not applicable if Proportional Band 1 is set to 0 or if Output 2 (COOL) is
not fitted.
5. The Message Display will show Diff 1 for ON/OFF control on Output 1 only, Diff 2 for
ON/OFF control on Output 2 only and Diff for ON/OFF control on both Output 1 and Output
2.
6. Internal software prevents (a) the Setpoint High Limit being given a value less than any
setpoint value contained in the currently-resident programs, and (b) the Setpoint Low Limit
being given a value greater than any setpoint value contained in the currently-resident
programs.
7. These parameters are not applicable if the Recorder Output Option is not fitted.
8. Output 1 Cycle Time is not applicable if Proportional Band 1 is set to 0 or if Output 1 is a
DC Linear output. Output 2 Cycle Time is not applicable if Proportional Band 1 is set to 0, if
Proportional Band 2 is set to 0, If Output 2 is not fitted or if Output 2 is a DC Linear output.
9. These parameters are applicable only if a linear input is fitted
10. Applicable only if the RS485 Serial Communications Option is fitted.
11. Applicable to TPSC control only.
12. If the instrument is configured to have one lock code only (Message Display will show
Lock), this value is used to enter Program Define Mode and Controller Define Mode. If two
lock codes are to be used (Message Display will show Lock C), this value applies to
Controller Define Mode only.
9-6
Function
Display
Defines the four-digit
code required to enter
Controller Define Mode
(and, if a common lock
code is to be used,
Program Define Mode).
Available Settings/Values
(Lower Main Display)
0 to 9999.
Default = 10.