"登录界面DB".设定用户名 := 'ABC'; "登录界面DB".设定密码 := '1234'; IF "登录界面DB".确定按钮 THEN IF "登录界面DB".设定用户名 = "登录界面DB".输入用户名 AND "登录界面DB".设定密码 = "登录界面DB".输入密码 THEN "登录界面DB".密码判断 := 1; "登录界面DB".提示信息 := '登陆成功'; END_IF; IF "登录界面DB".设定用户名="" AND "登录界面DB".设定密码="" THEN "登录界面DB".密码判断 := 0; "登录界面DB".提示信息 := '错误代码 E0002:用户名或密码错误'; END_IF; END_IF; IF "登录界面DB".注销按钮 THEN "登录界面DB".输入用户名 := ''; "登录界面DB".输入密码 := ''; "登录界面DB".提示信息 := ''; END_IF;
时间: 2023-08-10 22:06:02 浏览: 52
这段代码是一个简单的登录界面的逻辑。根据代码的逻辑,首先会设定一个用户名为'ABC',密码为'1234'。然后,如果确定按钮被点击,会判断输入的用户名和密码是否与设定的用户名和密码相符合。如果相符合,将密码判断设为1,并提示登录成功。如果设定的用户名和密码为空,则将密码判断设为0,并提示错误代码E0002:用户名或密码错误。最后,如果注销按钮被点击,会将输入的用户名、密码和提示信息清空。
相关问题
BEGIN REGION Servo Power //Servo Power IF "AlwaysTRUE" AND "Control Voltage On" THEN "Robot1 Power for Servo 1-2" := "Robot2 Power for Servo 3-4" := "Robot3 Power for Servo 5-6" := "Robot4 Power for Travelling Servo 7-8" := "Robot5 Power for Travelling Servo 9-10" := true; ELSE "Robot1 Power for Servo 1-2" := "Robot2 Power for Servo 3-4" := "Robot3 Power for Servo 5-6" := "Robot4 Power for Travelling Servo 7-8" := "Robot5 Power for Travelling Servo 9-10" := FALSE; END_IF; //Servo Limit Sensor - 启用硬限位 IF "AlwaysTRUE" AND NOT "Buzzer Stop Button" THEN "DB1002_Control Status Epos".Robot1.X.CamAct := "DB1002_Control Status Epos".Robot1.Z.CamAct := "DB1002_Control Status Epos".Robot2.X.CamAct := "DB1002_Control Status Epos".Robot2.Z.CamAct := "DB1002_Control Status Epos".Robot3.X.CamAct := "DB1002_Control Status Epos".Robot3.Z.CamAct := "DB1002_Control Status Epos".Robot4.X.CamAct := "DB1002_Control Status Epos".Robot4.Z.CamAct := "DB1002_Control Status Epos".Robot5.X.CamAct := "DB1002_Control Status Epos".Robot5.Z.CamAct := "DB1002_Control Status Epos".Load.X.CamAct := "DB1002_Control Status Epos".UnLoad.X.CamAct := TRUE; ELSE "DB1002_Control Status Epos".Robot1.X.CamAct := "DB1002_Control Status Epos".Robot1.Z.CamAct := "DB1002_Control Status Epos".Robot2.X.CamAct := "DB1002_Control Status Epos".Robot2.Z.CamAct := "DB1002_Control Status Epos".Robot3.X.CamAct := "DB1002_Control Status Epos".Robot3.Z.CamAct := "DB1002_Control Status Epos".Robot4.X.CamAct := "DB1002_Control Status Epos".Robot4.Z.CamAct := "DB1002_Control Status Epos".Robot5.X.CamAct := "DB1002_Control Status Epos".Robot5.Z.CamAct := "DB1002_Control Status Epos".Load.X.CamAct := "DB1002_Control Status Epos".UnLoad.X.CamAct := false; END_IF; //Robot1 X Power And Reset "FC192_Robot_Power"("E-Stop" := "DB1002_Control Status Epos".Robot1.X."E-Stop", Fault := "DB1001_Actual Status Epos".Robot1.X.Fault, Ready := "DB1001_Actual Status Epos".Robot1.X.OFF1_Ready, "Alarm Reset" := "Alarm Reset", Off1 => "DB1002_Control Status Epos".Robot1.X.Off1, "Enable Temp" := "DB1003_Servo Button"."Robot1 X"."Servo enabled Temp", "Enable Reset" := "DB1003_Servo Button"."Robot1 X"."Servo enabled Reset", "Time" := "DB3_Time".Robot1.T65);
这段代码是一个程序的一部分,主要包含了一些条件判断和变量赋值。
首先,在 "Servo Power" 区域内,根据条件判断 "AlwaysTRUE" 和 "Control Voltage On" 的结果,设置了多个变量的值。如果条件为真,则将一些名为 "RobotX Power for Servo X-X" 的变量设置为 true;否则设置为 false。
接着,在 "Servo Limit Sensor - 启用硬限位" 区域内,根据条件判断 "AlwaysTRUE" 和 "Buzzer Stop Button" 的结果,设置了多个名为 "DB1002_Control Status Epos" 的变量的属性值。如果条件为真,则将这些变量的某个属性(CamAct)设置为 true;否则设置为 false。
最后,在 "Robot1 X Power And Reset" 部分,调用了一个名为 "FC192_Robot_Power" 的函数,并传递了多个参数。这些参数包括了一些变量和常量的值,用于控制机器人的电源和复位操作。
请注意,这只是代码的一部分,可能还有其他部分的代码没有提供。因此,完整理解代码功能需要考虑整个程序的逻辑。
如下model如何多表join? from flask_sqlalchemy import SQLAlchemy db = SQLAlchemy() class Table1(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(50)) class Table2(db.Model): id = db.Column(db.Integer, primary_key=True) table1_id = db.Column(db.Integer) table3_id = db.Column(db.Integer) class Table3(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(50))
To join multiple tables, you can use the `join()` method provided by SQLAlchemy. Here's an example of how you can join `Table1`, `Table2` and `Table3` based on their foreign key relationships:
```
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy()
class Table1(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(50))
class Table2(db.Model):
id = db.Column(db.Integer, primary_key=True)
table1_id = db.Column(db.Integer, db.ForeignKey('table1.id'))
table3_id = db.Column(db.Integer, db.ForeignKey('table3.id'))
table1 = db.relationship('Table1', backref='table2')
table3 = db.relationship('Table3', backref='table2')
class Table3(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(50))
# Join Table1, Table2 and Table3
result = db.session.query(Table1, Table2, Table3).\
join(Table2, Table1.id == Table2.table1_id).\
join(Table3, Table2.table3_id == Table3.id).all()
```
In this example, we first define the foreign key relationships between `Table1`, `Table2` and `Table3`. Then, we use the `join()` method to join these tables based on their foreign keys. Finally, we execute the query using `all()` to retrieve all the rows from the result set.
Note that you can also use the `filter()` method to filter the result set based on certain conditions.