Siemens BTC-BR Manual descarregar pdf (Página 168)

3 Removing and fitting housing

3–76 Section 3 © Siemens VDO Trading GmbH TU00-1318-0200302

3.17 Data output – data block

Fig. 3-59 Data output and optical fibre

From 09.85 all 1318 units have been fitted with an optical, serial data interface (1).

Data carriers are transmitted to the receiver by means of a fibre optic cable (2) with the

smallest bend radius of 50 mm.

The data output LED works in the visible area. (See Abb. 2-53 item (4)).)

Within the transmission interval one data block is transmitted with the speed unit and

two data blocks with the RPM unit. These data blocks have the following content.

1 Data interface 5 Crimp ring

2 Optical fibre cable 6 Screw cap

3 Optical fibre 7 Seal die

4 Sleeve (red)

Data format Transmission interval

5 x 8 bit, UART compatible,

300 baud, phase coded

0.5 seconds

Data block 1 Data block 2

• Distance pulses (v speed) •RPM n

• Current statuses • System identification n

– Switch position for knobs

• Generator pulse check for n

– Additional stylus

• CRC test mark

– Warning device

– System identification for v

• Sender unit pulse check for v

• CRC test symbol

3 4 5 6 7

max. 5

5/16-32 UNCF - 2B

Length min. 0.5 m/ max. 5

1 2 ... 163 164 165 166 167 168 169 170 171 172 173 ... 263 264

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Siemens BTC-BR Manual Página 168