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262
UF-7000/8000
APR 2007
Ver. 2.1
UF-7100/8100
A computer in the ring captures the token, if it has data to transmit, it holds the token and transmits a data
frame. This data frame is passed to each computer in the ring, which checks whether it is the intended
recipient of the frame.
When the frame reaches the destination address, the destination PC copies the frame to a receive buffer,
updates the frame status field of the data frame and puts the frame back on the ring. When the computer
that originally sent the frame receives it back from the ring, it acknowledges a successful transmission,
takes the frame off the ring, and places the token back on the ring.
Token Frame indicates that the network is available for transmission.
Data Frame indicates that the network is busy processing a transmission.
Token Frame Format
Data Frame Format
There are several different bit types assigned for Frame Status. For example, 1 and 5 bit indicates that the
token has been read, 2 and 6 bit indicates that the frame has been copied by another station. Thus, we can
confirm whether the Data Frame was delivered.
Most significant bit
Start De-limiter (SFD)
1 byte
P P P S M R R R
End De-limiter (ED)
1 byte
P: priority
S: Status
0 = Token Frame
1 = Data Frame
R: Reserved
Least significant bit
Most significant bit
SFD
1 byte
Access
Control
1 byte
Frame
control
1 byte
Destination
MAC
6 or 2 byte
Source
MAC
6 or 2 byte
Data
FCS
4 byte
ED
1 byte
Frame
Status
1 byte
Data: Max 4429 byte (4M)
Max 17779 (16M)
Least significant bit
Содержание Panafax UF-7000
Страница 9: ...Table of Contents 9 Schematic Diagram 303 10 1 General Circuit Diagram 303 ...
Страница 122: ...122 UF 7000 8000 APR 2007 Ver 2 1 UF 7100 8100 Sensor and Switch Location ...
Страница 190: ...190 UF 7000 8000 APR 2007 Ver 2 1 UF 7100 8100 6 3 Printer Receive Mechanism 6 3 1 Component Layout and Paper Path ...
Страница 239: ...239 UF 7000 8000 APR 2007 Ver 2 1 UF 7100 8100 7 Installation Refer to Quick Guide For Facsimile and Copy Functions ...
Страница 304: ...304 APR 2007 Ver 2 1 UF 7000 8000 UF 7100 8100 memo ...
Страница 305: ...DZSD001829 14 Panasonic Software Operating Instructions Network Firmware Update Tool for Service Technicians Version 3 ...
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Страница 321: ...DZSD000965 17 Panasonic Software Operating Instructions Local Firmware Update Tool for Service Technicians Version 3 ...
Страница 332: ...Local Firmware Update Tool Parallel USB Port Page 12 5b4 Firmware Code File selection is completed Click Next ...
Страница 336: ...memo ...
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Страница 374: ...DZZSM00287 ...