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地址:厦门思明区槟榔西里197号第四层B19
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程序已正常使用多年,出现问题后,上载来仿真可以run。诊断如下:
Diagnostic buffer of module CPU 313C-2 DP
Order No./ Description Component Version
6ES7 313-6CF03-0AB0 Ha***are 1
- - - Firmware V 2.0.12
Rack: 0
Slot: 2
Event 1 of 100: Event ID 16# 4562
STOP caused by programming error (OB not loaded or not possible, or no FRB)
Breakpoint in user program: Cyclic program (OB1)
Priority class: 1
FC number: 1
Module address: 378
Previous operating mode: RUN
Requested operating mode: STOP (internal)
Internal error, Incoming event
11:15:45.070 PM 04/27/2000
Event 2 of 100: Event ID 16# 2521
BCD conversion error
Affected register: accumulator 1
Requested OB: Programming error OB (OB121)
OB not found, or disabled, or cannot be started in the in the current operating mode
Internal error, Incoming event
11:15:45.056 PM 04/27/2000
Event 3 of 100: Event ID 16# 4302
Mode transition from STARTUP to RUN
Startup information:
- Time for time stamp at the last backed up power on
- Single processor operation
Current/last startup type:
- Warm restart triggered by switch setting; last power on backed up
Permissibility of certain startup types:
- Manual warm restart permitted
- Automatic warm restart permitted
Last valid operation or setting of automatic startup type at power on:
- Warm restart triggered by switch setting; last power on backed up
Previous operating mode: STARTUP (warm restart)
Requested operating mode: RUN
Incoming event
11:15:45.033 PM 04/27/2000
Event 4 of 100: Event ID 16# 1381
Request for manual warm restart
STOP due to: STOP caused by programming error (OB not loaded or not possible, or no FRB)
Startup information:
- Startup without modified system configuration
- No difference between setpoint and actual configuration
- Time for time stamp at the last backed up power on
- Single processor operation
Current/last startup type:
- Warm restart triggered by switch setting; last power on backed up
Permissibility of certain startup types:
- Manual warm restart permitted
- Automatic warm restart permitted
Last valid operation or setting of automatic startup type at power on:
- Warm restart triggered by switch setting; last power on backed up
Requested OB: Startup OB (OB100)
Priority class: 27
Incoming event
11:15:45.032 PM 04/27/2000
***佳答案
1、诊断信息:
BCD conversion error
Affected register: accumulator 1
Requested OB: Programming error OB (OB121)
OB not found, or disabled, or cannot be started in the in the current operating mode
Internal error, Incoming event
STOP due to: STOP caused by programming error (OB not loaded or not possible, or no FRB)
从上述诊断信息可看出是由于编程错误引起的STOP ,具体是由BCD码转换的错误。如果忽略这种错误可添加OB121,只需添加不需编程。
2、关于OB***块:
CPU程序块里面需要添加一些对应的OB***块,只需添加不需编程,当发生相应故障是CPU只报警,不停机。如:
OB81 电源故障
OB82 诊断中断
OB83 插入/拔出模块中断
OB85 优先级错误
OB86 扩展机架,DP主站系统或者分布式I/O故障
OB87 通讯故障
OB121编程错误
OB122 I/O访问错误
一个回路由水箱--变频水泵--压力变送器--试件--压力变送器--调节阀--流量计--水箱--串联组成的回路,想要实现恒压供水,管道内流量恒定的情况下,记录试件前后压力差~其中,调节阀和流量计采用PID控制使流量恒定,但是这样会不会对管道内的压力产生影响,变频器可以自动调整压力吗?
***佳答案
如果你用变频器去控制水泵的话,一旦你的水泵转速降下来了,你水泵的扬程势必会受到影响;你可以这样,如果你是控制恒定流量的话,你可以选一个比例三通阀,去控制比例三通阀,进水管和回水管C的流量都是100%,当你恒定流量区只需70%的流量时,比例阀打开70%,恒定区(回水管B)只有70%的水流过,其余30%水从回水管A处通过三通阀回流到回水管C中,因为你是用比例阀控制的,所以,你的三通阀的可调范围是
0-100%可调,恒定区的流量也是0-100%可调,安装的时候注意三通阀的方向,如果装反了,比例阀失去作用。
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