| 领域 | 默认值 | 描述 |
|---|---|---|
| Max Time Off Control [t/v]（允许脱开控制的最大时间） | 0 | 当MV设定为INACTIVE时启动的计时器。如果计时器超过此规定值（s）且MV是重要控制，则该MV的子控制器将设定为INACTIVE。 |
| Maximum Move Size [t/v]（最大动作幅度） | 10000000 | 这是控制器每次执行时MV输出所允许改变的最大值。 |
| Setpoint Readback Precision Tolerance [v]（设定值回读精确容忍） | 0 | PCTP 2012之前的工作区将默认更新为0.1**MaxMove（当 MaxMove被定义为值时）。 这样可以适应DCS因数值精度或相关回读死区等可能生成的舍入误差。如果回读值和之前记下值的差小于此公差，下一步动作计算将以之前记下值为基础。否则，下一步动作计算将以之前的回读值为基础，并提供一个警告信息。在工作区中其必须被指定为一个>0的值（不能设置为位号且不能为负值）。升级工作区：对所有MV若其MaxMove都被指定为值，当打开PCTP 2012中现有工作区时，公差将按下式自动生成：SPRB Precision Tolerance = 0.1 MaxMove；SPRB Error Tolerance = MaxMove对所有MV若其MaxMove被指定为DCS位号，这些公差默认值将设定为0，在EXA文件搭建之前你需要设定一个有效值。 |
| Setpoint Readback Error Tolerance [v]（设定值回读误差容忍） | 0 | PCTP 2012之前的工作区将默认更新MaxMove（当MaxMove被定义为值时）。 如果回读值和之前记下值的差大于此公差，主控制器将切换为standby且给出一条错误信息。在工作区中其必须指定为一个>0的值（不能设置为位号且不能为负值）。 |
| Weight [v]（权重） | 从控制器读取 | 这是将被传递到在线系统（不可编辑）的MV Weight。(二次优化问题中的R值) |
| Calculated High Limit [t/v]（计算高限） | 0.0 | 根据Setpoint High/Low Limit, Valve High/Low Limit和Valve Gain Near High/Low Limit计算内部MV高限。 只有当Advanced选中时才可见。对于正/反作用控制器：
其中HiLim根据Valve Gain Near High Limit 或Valve Gain Near Low Limit上述规范被计算。 |
原文：
| Field | Default Value | Description |
|---|---|---|
| Max Time Off Control [t/v] | 0 | A timer starts when an MV is set to INACTIVE. If the timer exceeds this specified value (seconds) and the MV is Essential for Control, then the MV’s Sub-Controller will be set to INACTIVE. |
| Maximum Move Size [t/v] | 10000000 | This is the maximum amount that the MV Output is allowed to change per execution of the controller |
| Setpoint Readback Precision Tolerance [v] | 0 | Workspaces prior to PCTP 2012 will default on upgrade to 0.1 *** MaxMove (if MaxMove is defined as a value) This accommodates roundoff error the DCS may generate by either numerical precision or deadband associated with the readback.If difference between the readback and the previously written-down value is smaller than this tolerance, the next calculated move will be based upon the previously written-down value. Otherwise, the next calculated move will be based upon the readback value and a warning message will be provided.This must be specified as a value > 0 in the workspace (cannot be configured as a tag and cannot be negative).Upgrading a Workspace:For all MV’s with MaxMove already specified as a value, when opening the existing workspace in PCTP 2012 the tolerances will automatically be set for you as follows…SPRB Precision Tolerance = 0.1* MaxMoveSPRB Error Tolerance = For all MV’s with MaxMove specified as a DCS tag, these tolerances will default to a value of zero and you will be required to set a valid value before the EXA file will build. |
| Setpoint Readback Error Tolerance [v] | 0 | Workspaces prior to PCTP 2012 will default on upgrade to MaxMove(if MaxMove is defined as a value) If the difference between the readback the the previously written-down value is greater than this tolerance the main controller will shed to standby and an error message will be given.This must be specified as a value > 0 the workspace (cannot be configured as a tag and cannot be negative) |
| Weight [v] | From the controller. | This is the MV Weight (R value in the quadratic optimization problem) that will be transferred to the online system (not editable). |
| Calculated High Limit [t/v] | 0.0 | Calculated internal MV high limit based on Setpoint High/Low Limit, Valve High/Low Limit and Valve Gain Near High/Low Limit. Visible only when Advanced option is selected.For both direct and reverse acting controllers:where HiLim is computed as per the Valve Gain Near High Limit or Valve Gain Near Low Limit specification above. |
2016.6.26
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