Emerson Micro Motion 3711, Руководство по конфигурации и использованию, Страница: 85 / 234

Configuration and Use Manual 77
Configuring I/O
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Figure 7-12 Discrete Outputs – TDO Parameters panel
Table 7-11 Discrete Outputs – TDO Parameters parameters
Parameter Description Comments
Cycle Time Applies only when DOUT Type = TDO Toggle.
Defines the total time of one DO cycle.
0% Count The number of seconds that will be used to represent a 0%
output pulse width. Defines the minimum amount of
time that the TDO can be
activated. Set this parameter to a
value that allows movement of the
motor while also providing good
resolution of control.
100% Count The number of seconds that will be used to represent a 100%
output pulse width. Defines the maximum amount of
time that the TDO can be
activated. Typically set to the time
required for the valve to move from
fully open to fully closed.
Low Reading EU The EU value that will be represented as 0% Count.
High Reading EU The EU value that will be represented as 100% Count.
EU Value Applies only when DOUT Type = Time Duration or TDO Toggle.
Used to calculate the duration, in seconds, of the On state. The actual duration is based on
the scaling of the DO (0% Count,
100% Count, Low Reading EU,
High Reading EU) and the location
of the configured EU Value on that
scale.
Units Description for the engineering unit (EU) that this DO
represents; 10 characters maximum. Examples: MCF, CFM.