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Set top address of flag area

File address: OCT (octal), word

File number/flag: HEX (hexadecimal), byte

Set the top address of the flag area (24 bytes) in order to monitor the communication condition and PC operation condition on the parameter address 007764 to 007767(8).

Flag area uses 24 bytes regardless number of connecting stations.

 

 

 

Initial value

Contents

 

 

 

 

 

007764(8)

 

 

Lower

E0(H)

 

 

 

 

Byte address

 

 

 

 

 

 

01E0(H)000740(8)0740

007765(8)

 

 

 

 

 

 

 

 

 

 

 

 

 

Upper

01(H)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

007766(8)

 

 

 

 

 

 

 

 

 

 

 

File number 0

 

 

 

 

File number

00(H)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

007767(8)

 

 

 

 

 

 

 

 

 

 

 

 

D7

 

 

 

80(H)

 

 

 

 

Output flag

 

 

 

 

 

 

 

Output flag : ON

Do not output flag : OFF

• In case of setting “0740, output flag” using JW-13PG.

Write “740(740)” in parameter addresses 007764 to 007765(8).

After switching to byte display, write file

No. 0 with HEX (hexadecimal)

Write 80(H) to address 007767(8)

Screen display of JW-13PG

07765 HEX 01

07766 HEX 00 I PARAM.

>07767 HEX 80

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

9

 

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 stations, 450 ms for more than 33 stations.

 

 

001

100

 

 

 

 

010

1000

 

 

 

 

255

2500

 

 

Detection time precision : —100 ms to +0 ms

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

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