9. SPECIFICATIONS
9-16
(2-2) Manchester coding synchronization (1 Mbps)
① Configuration in a frame
1 frame (25 bits)
↑ ↑ ↑ ↑ ↑ ↑
Start
signal
MODEM
address
signal Position signal
Frame
address
signal
CRC
signal
Stop
signal
(3 bit) (2 bit) (15 bit) (1 bit) (3 bit) (1 bit)
Fig. 9-7-2 (1) Frame Configuration of Manchester Coding Synchronization (1Mbps) (ABS-E)
② Configuration in each frame
Fig. 9-7-2 (2) Transfer Format of Manchester Coding Synchronization (1 Mbps) (ABS-E)
1 The first 2 bits of the start signal are output
as a high (1) signal of the whole bit section.
The remaining 23 bits are all Manchester coded.
2 D0 to D10........... One-revolution absolute value
D11 to D23......... Multi-revolution absolute value
BATE.................. Battery alarm
SOT.................... Absolute value range over
WAR................... Battery warning
Data “0”Data “1”
1
0
1
0
Manchester code
1 1 1 0 0
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14
(LSB)
0 0/1 0/1 0/1 0
D15 D16 D17 D18 D19 D20 D21 D22 D23 BATE SOT 0 WAR 0 0
1
• Frame 1
• Frame 2
Position signal
Frame address signal
Start signal MODEM address signal
CRC signal Stop signal
Position signal
Frame address signal
(MSB)
The start signal, MODEM signal, CRC signal
and stop signal are the same as those in frame 1.
( 1)