CT2566 查看數據表（PDF） - Aeroflex Corporation
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CT2566 Datasheet PDF : 37 Pages
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15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
11111111
LOOP TEST FAIL
RESPONSE TIME OUT (BC ONLY)
FORMAT ERROR
STATUS SET (BC ONLY)
ERROR FLAG
CHB/CHA (RTU ONLY)
SOM
EOM
Note: In BC mode Bit 13, CHB/CHA contains a logic "0" regardless of which channel is used.
Figure 5 – Block Status Word
CONFIGURATION
REGISTER
15 13
0
STACK
POINTERS
DESCRIPTOR
STACKS
DATA
BLOCKS
CURRENT
AREA B/A
Note: User may opt to share memory block(s).
BLOCK STATUS WORD
TIME TAG WORD
RESERVED
MESSAGE
BLOCK ADDR
DATA BLOCK
DATA BLOCK
CONFIGURATION
REGISTER
15 13
0
Figure 6 – Use of Descriptor Stack – BC Mode
STACK
POINTERS
DESCRIPTOR
STACKS
LOOK-UP TABLE
(DATA BLOCK ADDR)
CURRENT
AREA B/A
Note: (1) User may opt to share memory block(s).
(2) See Figure 19.
BLOCK STATUS WORD
TIME TAG WORD
RESERVED
RECEIVED COMMAND
WORD
LOOK-UP
TABLE ADDR (2)
DATA
BLOCKS
(1)
DATA BLOCK
DATA BLOCK
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Figure 7 – Use of Descriptor Stack – RTU Mode
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SCDCT2566 REV B 8/10/99 Plainview NY (516) 694-6700
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