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100

101

Function library

Function blocks

3.5.12 BCD decade switch (BCD)

3−124

EDSVS9332P−EXT DE 2.0

3.5.12.6 Complete BCD reading

+/-

MSB

LSB

BCDx-SIGN

BCDx-SEL1

BCDx-SEL2

BCDx-SEL3

BCDx-DATA1

BCDx-DATA

9300

BCDx-SEL4

Fig. 3−78 Cancel after the 3rd absolute value digit (diode circuit)

Function

Reading can be shortened if BCDs are not required.

l The FB does not read the following BCDs if the value A

hex

(1010

bin

) for "ABORT" is transmitted

after a BCD has been read. The reading stops with the identification of "ABORT".

l In the case of the abort via a value digit, the least significant bit (LSB) is to be assigned with

"ABORT", because the reading sequence stops at the least significant bit.

l In the handshake mode, "CANCEL" should be identified at the beginning of the data

transmission (see also the following chapter).

1 2 ... 147 148 149 150 151 152 153 154 155 156 157 ... 333 334

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