(1)Communication monitor flag
This flag is used to monitor the communication condition with other stations.
Flag | Condition for flag operation | Flag operation | |
| When the parameter address 007777(8) of each slave station is set to | ON | |
Own | "01(H)," and at communicating with a master station normally. | ||
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station | When the parameter address 007777(8) of each slave station is "00(H)." |
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flag |
| OFF | |
When link start switch "00(H)" of the master station is OFF. | |||
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Flag | Condition for flag operation | Flag operation | |
Other | Normal communication with each station. | ON | Specific |
Stopped communication or unable to |
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| station | ||
station’s | communication with each station. |
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OFF |
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flag |
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Communication monitor flag (1) of the master |
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| All stations | ||
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| station is turned "OFF." |
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(2)Operation condition monitor flag [1]
This flag is used to monitor the operation condition of each station when the communication with each station is normal.
Flag | Condition for flag operation | Flag operation |
Own | Communication monitor flag (1) of the own station is turned "ON." | * ON |
station |
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| OFF | |
flag | Communication monitor flag (1) of the own station is turned "OFF." |
Flag | Condition for flag operation | Flag operation | ||
| Each station is operating. | ON | Specific | |
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Other | Each station stops operation (not by an error cause). |
| station | |
station’s |
| OFF |
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Communication monitor flag (1) of the own station |
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All slave | ||||
flag | is turned "OFF." |
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| stations | |||
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| Slave station that communication monitor flag (1) | Not specified | ||
| is turned to "OFF." | |||
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*Even if the own station PC has stopped operation normally or by an error, the
(3)Operation condition monitor flag [2]
This flag is used to monitor the abnormal stop of each station when the communication with each station is normal.
Flag | Condition for flag operation | Flag operation |
Own | Communication monitor flag (1) of the own station is turned "ON." | * ON |
station |
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flag | Communication monitor flag (1) of the own station is turned "OFF." | OFF |
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Flag | Condition for flag operation | Flag operation | ||
| Each station is normal. | ON | Specific | |
| Any of the stations is faulty (caused to be stopped |
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Other |
| station | ||
abnormally). | OFF | |||
station’s |
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Communication monitor flag (1) of the own station |
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flag | is turned "OFF." |
| All stations | |
| Slave station that communication monitor flag (1) is | Not specified | ||
| turned to "OFF." | |||
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*Even if a own station PC has stopped operation normally or by an error, the