附录 4: 顺序控制
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Transcript of 附录 4: 顺序控制
Date: 23/4/20File: SeqContrl.1
SIMATIC S7Siemens AG 2000. All rights reserved.
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附录 4:顺序控制
S1
S2
T1
T2
S4
T3
S6
T4
T5
S5
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SIMATIC S7Siemens AG 2000. All rights reserved.
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顺序控制任务
初始位置 传送带向前 钻 传送带向前 铣 传送带向前 终检
S0 S1 S2 S3 S4 S5 S6
预备 钻 铣 终检
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SIMATIC S7Siemens AG 2000. All rights reserved.
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顺序控制的结构
启动 停止 自动方式 单步方式 键控方式
方式选择
应答
故障信号和
运行信号
顺控器使能
初态状态
转换条件
命令输出
手动控制
互锁条件
步序标志
驱动执行机构
顺控器
Date: 23/4/20File: SeqContrl.4
SIMATIC S7Siemens AG 2000. All rights reserved.
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顺控器的原理
-SMx -SM0
-Sequencer ON
-SM1
&
顺控器启动
&
顺控器停止
S
R
R
-SM0
-SM1
-SMx
置 / 复位步序标志 最后一步的标志
-SM0 S
R
-SM1
-SM0
- Transition from S0 to S1
& -SMx
R -SMx
&
-Final inspection
SM.. = Step Marker S.. = Step
R
-Sequencer ON
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SIMATIC S7Siemens AG 2000. All rights reserved.
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命令输出的原理
>=1
&
&
&
-Output=
-SFx
-Automatic
-Manual
-Jog FORWARD
Safety
interlocks
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顺控器的表达和结构 (1)
生产线的控制系统流程图 ( 符合 IEC 848)
Sequencer ON
Step 1
1 NS
NSD
Q 5.5 Conveyor motor
Monitoring time 5 s
I 1.7 START
R
Step 2
2 NS
NSD
Drilling
Waiting time 4 s
I 8.6 Initiator 2
R
Step 0
0
Q 8.1 Initial position
R
>=1Sequencer ON
I8.4 Acknowledge final inspection
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SIMATIC S7Siemens AG 2000. All rights reserved.
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顺控器的表达和结构 (2)
Step 4
4 NS
NSD
Milling
Waiting time 4 s
I 8.7 Initiator 3
R
Step 5
5 NS
NSD
Q 5.5 Conv.FORWARD
Monitoring time 5 s
T 109 Waiting time over
R
Step 6
6 NS Enable final inspection
I 8.0 Light barrier obstructed
R
Step 3
3 NS
NSD
Q 5.5 Conv.FORWARD
Monitoring time 5 s
T 108 Waiting time over
R
NSD Reset step6
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SIMATIC S7Siemens AG 2000. All rights reserved.
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顺序控制“加工流水线”的设计
OB 1
:JU FC 104
FC 104 选择方式
系统启动手动方式自动方式 ( 启动顺控器 ):::BE
FC 106 顺序控制
检查初始状态
:JU FC 108 命令输出步序指示
:BE
FC 108 顺控器
步序标志步序转换 等待时间监视时间
:BE
:JU FC 106
:BE
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FC108 中顺控器的结构
S0
S1
S2
S3
S4
S5
S6
T0
T1
T2
T3
T4
T5S = Step
T = TransitionT6
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练习 1: 编写顺序控制程序
FC108 顺控器 Step 0
&
SEQUENCER OFF
&
S
R
R
Step 1
&
S
R
Step 2
&
S
R
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练习 2: 程序测试
M 106.1
M 106.3
M 106.5
>=1T 106
S5T#5S
I 1.6
TV BI
BCD
R Q #M 107.0
M 100.0
&
= Q 4.0
S_ODTS
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S1
用 S7- GRAPH 编程顺序控制系统
S7-GRAPH: 顺序控制的编程工具 兼容 IEC 1131-3 为生产需要而设计 用图形将过程分解成步骤和转换条件 步骤中包含要执行的动作 转换器用于检查转换为下一步的条件
S7-GRAPH 可以优化下列工作: 计划,配置 编程 调试 维护 诊断
S2
T1
T2
S4
T3
S6
T4
T5
S5
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SIMATIC S7Siemens AG 2000. All rights reserved.
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顺序控制小结
顺序控制的主要组成部分 运行方式部分
顺控器
命令输出
实现顺序控制的两种方法 将顺控器作为标志顺控器编程
用顺序控制软件包 S7-GRAPH
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Information and Training CenterKnowledge for Automation
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Information and Training CenterKnowledge for Automation
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Information and Training CenterKnowledge for Automation
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SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
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Information and Training CenterKnowledge for Automation
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SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation
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SIMATIC S7Siemens AG 2000. All rights reserved.
Information and Training CenterKnowledge for Automation