From the previous page

Enter communication error detection interval [DCM (decimal), byte]

 

 

 

 

 

 

 

 

· If the JW-20CM does not receive data from a station within the specified time (initial value: 250

 

 

 

ms when fewer than 32 stations are connected, 450 ms when more than 33 stations are connected),

 

 

 

it turns OFF the communication monitor flag corresponding to this station. The specified time can

 

 

 

be changed by entering a different value at parameter address 007771(8) (communication error

 

 

 

detection time). Use the same value for all the stations.

 

 

 

 

Normally, this value does not need to be changed. Use the modules with the initial value (00(H)).

 

 

 

 

 

 

 

 

 

 

Set value(D)

Communication error detection time (ms)

 

 

 

 

 

 

 

 

 

 

 

000

Initial value: 250 ms for fewer than 32

* Detection time precision:

 

 

 

stations, 450 ms for more than 33 stations.

 

 

 

 

–100 ms to +0 ms

 

 

 

 

 

 

 

 

 

001

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

002

200

 

 

 

 

 

 

 

 

 

 

 

 

003

300

 

 

 

 

 

 

 

 

 

 

 

 

004

400

 

 

 

 

 

 

 

 

 

 

 

 

005

500

 

 

 

 

 

 

 

 

 

 

 

 

006

600

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

010

1000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

255

2500

 

 

 

 

 

 

 

 

 

 

 

 

Ex.: If the PC scan time is extremely long (exceeds the time specified above), the communication

 

 

 

9

 

 

monitor flag will turn OFF, even though there is no communication error. In this case, change

 

 

 

 

the value at parameter address 007771(8) to a larger number.

 

 

 

 

 

 

 

 

To the next page

 

 

 

 

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