West Control Solutions N6600 - Manual (Page 66)

5.3.7.3 MANUAL RESET (BIAS) {P} = J
This parameter may be modified/interrogated using a Type 2 message or a Type
3/4 message sequence. The decimal point position is as for the input range.
5.3.7.4 ON/OFF DIFFERENTIAL {P} = F
This parameter may be modified/interrogated using a Type 2 message or a Type
3/4 message sequence. It defines the switching hysteresis (for Controllers with an
ON/OFF control output - primary or secondary output). The decimal point position
= 1.
5.3.7.5 OVERLAP/DEADBAND {P} = K
Applicable to a dual control output instrument only, this parameter may be
modified/interrogated using a Type 2 message or a Type 3/4 message sequence.
It may be set to positive and negative values (a positive value indicates overlap,
a negative value indicates deadband). The decimal point position = 0.
5.3.7.6 PROPORTIONAL BAND 1 VALUE {P} = P
This parameter may be modified/interrogated using a Type 2 message or a Type
3/4 message sequence. This may be set to 0.0 (for On/Off control) or to a value in
the range 0.5% - 999.9% of Output 1 power range. The decimal point position is
set to 1.
5.3.7.7 PROPORTIONAL BAND 2 VALUE {P} = U
For a dual control output instrument, this parameter may be modified/interrogated
using a Type 2 message or a Type 3/4 message sequence. This may be set to 0.0
(for On/Off control) or to a value in the range 0.5% - 999.9% of Output 2 power
range. The decimal point position is set to 1.
5.3.8 Status Parameters
5.3.8.1 CONTROLLER STATUS {P} = L
This parameter may be interrogated only, using a Type 2 message. The status
information is encoded in the four digits as the decimal representation of a binary
number. Each bit in the binary number has a particular significance (see NOTES
ON TABLE 5-2).
5.3.8.2 ARITHMETIC DEVIATION
(PROCESS VARIABLE - SETPOINT) VALUE {P} = V
This parameter may be interrogated only, using a Type 2 message. It is the
difference between the current process variable value and the current setpoint
value.
5-14 O075-5
PM-0075