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Checking a Send Area Overlap Error(P/W LINK 1 : DT9170, P/W LINK 2 : T9200, P/W LINK 3 : DT9230)
When a send area overlap error occurs, the overlapped station numbers(UNIT NO.) can be found. These special
data registers are useful to search a send area overlapped station when the error occurs.
data
Special
Description
register
address
DT9170
Indicates the station numbers(UNIT NO.) where the send area is overlapped in the P/W
LINK 1 network.
DT9200
Indicates the station numbers(UNIT NO.) where the send area is overlapped in the P/W
LINK 2 network.
DT9230
Indicates the station numbers(UNIT NO.) where the send area is overlapped in the P/W
LINK 3 network.
The contents of the special data registers are configured as follows ;
Bit position 15 •
• 12 11 •
Overlapped
station
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
(UNIT NO.)
Bit data corresponding to overlapped stations bcome "1".
[EXAMPLE]
DT9200
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
Bit position 15 •
• 12 11 •
Overlapped
station
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
(UNIT NO.)
Send area overlap stations
Checked from
Special data register
Contents of DT9200
•
8 7
•
•
4 3
•
8 7
•
•
4 3
: Station numbers(UNIT NO.) 1 and 3.
: Station number 1(UNIT NO. 1)/LINK 2(P/W PC LINK 0)
: DT9200
: "0000000000000101"[0005(H)]
•
•
0
1 : Overlapped
0 : Not overlapped
•
•
0
1 : Overlapped
0 : Not overlapped
4-2.P/W PC Link
37
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