B8. Manipulated Variable View-2

| | | | |
| ------------- |:-------------:| -----:|
| ** Setpoint High Limit（设定点高限）| MV Set point 高限设定；缺省值 = 10000 | R/W| R/W|
| ** Setpoint Low Limit（设定点低限）| MV Set point低限设定； 缺省值 = 0| R/W | R/W|
| Calc High Constraint（计算高约束） | 该Exasmoc MV的高设定点限制；| R | R|
| Calc Low Constraint（计算低约束）| 该Exasmoc MV的低设定点限制；| R | R|
|** SP High Entry Limit（SP高输入限制）| Setpoint High limit的上限值；SETPOINT HIGH LIMIT <= SP High Entry Limit 。| R |R/W|
|** SP Low Entry Limit（SP低输入限制）| Setpoint High limit的下限值；SETPOINT LOW LIMIT >= SP Low Entry Limit。| R| R/W|
|**** SPRB Precision Tolerance（SPRB精度公差）| 包含了当前setpoint readback（设定点回读值）和SMOC在上次执行时写入的设定值之间的最大允许偏差的绝对值，然后SMOC使用读取的当前设定值作为参考点来计算下一步动作。生成消息151。SPRB Precision Tolerance应等于或小于SPRB Error Tolerance。 默认值为（0.1 最大步幅）。| R| R/W|
|**** SPRB Error Tolerance(SPRB误差公差) |包含了当前setpoint readback（设定点回读）值和SMOC在上一次执行时写入的设定值之间的最大允许偏差的绝对值，然后SMOC标记一个readback（回读）错误。控制模式变为Standby（挂起）且生成消息152。 为了在错误复位后返回控制模式，请再次将所需状态打为Standby（挂起）和Control（控制）。SPRB Precision Error Tolerance （SPRB精度误差公差）应等于或小于SPRB Error Tolerance （SPRB误差公差）。 默认值为(1.1 MV 最大步幅)。| R |R/W|
|Essential for Control（控制必要性） |当MV对控制是必须的时，选择TRUE。 当MV对控制不是必须的时，选择FALSE。选择TRUE将有以下效果。如果该Exasmoc MV为不可用的情况，则Execute Control程序将自动把Exasmoc控制器置于STANDBY模式。| R |R/W|
|Maximum Time Off Control（最大关闭控制时间）| 如果Essential of Control is true（控制必要性是True）且Exasmoc MV为不可用状态，则在Exasmoc将Control模式切换为STANDBY模式之前的最大等待时间。| R| R/W|
|Valve Position（阀位） |此Exasmoc MV所属的DCS控制器的MV值。| R| R|
|Valve High Limit（阀位高限）| 控制阀位高限设定值；Default = 100 |R |R/W|
|Valve Low Limit（阀位低限）| 控制阀位低限设定值；Default = 0| R| R/W|
|Valve Gain Near High（阀位增益高限） |Exasmoc MV控制阀位阶跃后的增益高限；Default = 1| -| R/W|
|*Valve Gain Near Low（阀位增益低限）| Exasmoc MV控制阀位阶跃后的增益低限；Default = 1 |- |R/W|
|Calculated Move（计算动作）| 每次执行控制周期时由Exasmoc控制操作计算的增量值。若Exasmoc处于OFF或 STANDBY模式，则该值为0。 | R |R|
|Calculated MV（计算MV）| 每次执行控制周期时由Exasmoc控制操作计算的绝对值。若Exasmoc处于OFF或 STANDBY模式，则该值被冻结。| R| R|

---

原文：

| | | | |
| ------------- |:-------------:| -----:|
| ** Setpoint High Limit | MV Set point high limit setting. Default = 10000| R/W| R/W|
| ** Setpoint Low Limit | MV Set point low limit setting. Default = 0| R/W | R/W|
| Calc High Constraint | High set point limit of this Exasmoc MV| R | R|
| Calc Low Constraint | Low set point limit of this Exasmoc MV | R | R|
| ** SP High Entry Limit | The upper bound value of Setpoint High limit. SETPOINT HIGH LIMIT <= SP High Entry Limit should be filled.| R | R/W|
| ** SP Low Entry Limit | The lower bound value of Setpoint High limit. SETPOINT LOW LIMIT >= SP Low Entry Limit should be filled.| R | R/W|
| **** SPRB Precision Tolerance| Contains the absolute value of the maximum allowable discrepancy between the current setpoint readback value and the setpoint value written by SMOC at the previous execution before SMOC uses the current setpoint read as the reference point to calculate the next move. Message 151 is generated. SPRB Precision Tolerance should be equal or smaller than SPRB Error Tolerance. The default value is (0.1of MV maximum move size) | R | R/W|
| **** SPRB Error Tolerance| Contains the absolute value of the maximum allowable discrepancy between the current setpoint readback value and the setpoint value written by SMOC at the previous execution before SMOC flag a readback error. The control mode becomes Standby and Message 152 is generated. In order to return to Control mode after the error is reset, turn on Desired Status from Standby and Control again. SPRB Precision Error Tolerance should be equal or smaller than SPRB Error Tolerance. The default value is (1.1 MV maximum move size).| R| R/W|
| Essential for Control| TRUE- is selected when MV is essential for control. FALSE -(Default) is selected when MV is not essential for control. Selection of ¨TRUE〃 provides following effect. If in case Exasmoc MV is not available then ¨Execute Control〃 routine will automatically put Exasmoc controller into STANDBY mode. | R | R/W|
| Maximum Time Off Control | Maximum time specified to hold Exasmoc in Control mode before switching over to STANDBY mode if ¨ Essential of Control is true〃 and Exasmoc MV are not available. | R | R/W|
| *Valve Position| MV value of DCS controller to which this Exasmoc MV belongs. | R | R|
| *Valve High Limit| Control Valve high limit setting Default = 100 | R| R/W|
| *Valve Low Limit| Control Valve low limit setting. Default = 0 | R| R/W|
| *Valve Gain Near High| High limit of Gain in the Exasmoc MV measurement to a change in the Control Valve position. Default = 1 | - | R/W|
| *Valve Gain Near Low| Low limit of Gain in the Exasmoc MV measurement to a change in the Control Valve position. Default = 1 | - | R/W|
| Calculated Move | Incremental value computed by Exasmoc control action per execution of control period. If Exasmoc is in OFF or STANDBY mode then this value is zero. | R| R|
| Calculated MV| Absolute value computed by Exasmoc control action per execution of control period. If Exasmoc is in OFF or STANDBY mode then this value freezes. | R | R|

---

2017.1.7