Function library
Function blocks
3.5.12 BCD decade switch (BCD)
3−119
l
EDSVS9332P−EXT DE 2.0
BCD3
C1720/2
C1723
C1724
CTRL
+
+
C1725
S&H
C1729/6
BCD3-LOAD
C1728/6
C1720/1
Code/Subcode
(Cxxxx/yyy)
C1727
C1726
BCD3-BUSY
BCD3
³
1
C1729/7
BCD3-BUSY-IN
C1728/7
³
1
C1729/8
BCD3-FAIL-IN
C1728/8
BCD3-FAIL
C1729/2
BCD3-DATA1
C1728/2
C1729/3
BCD3-DATA2
C1728/3
C1729/4
BCD3-DATA3
C1728/4
C1729/5
BCD3-DATA4
C1728/5
C1729/1
BCD3-READ
C1728/1
BCD3-SIGN
BCD3-SEL1
BCD3-SEL2
BCD3-SEL3
BCD3-SEL4
BCD3-SEL5
BCD3-SEL6
BCD3-SEL7
BCD3-SEL8
BCD3-NEW-DATA
BCD3-EOT
BCD3-DATA-FLT
C1722
C1721
BCD-
LOGIC
2
0
2
1
2
2
2
3
Fig. 3−75 Function block BCD3
Signal
Source Note
Name Type DIS DIS format CFG List
BCD3−DATA1 d C1729/2 bin C1728/2 2 Data input (LSB)
BCD3−DATA2 d C1729/3 bin C1728/3 2 Data input
BCD3−DATA3 d C1729/4 bin C1728/4 2 Data input
BCD4−DATA4 d C1729/5 bin C1728/5 2 Data input (MSB)
BCD3−READ d C1729/1 bin C1728/1 2 Only required for handshake mode:
· Signal must be applied at the controller for at least
2 ms.
· LOW−HIGH edge starts the data transmission for a
BCD.
BCD3−LOAD d C1729/6 bin C1728/6 2 LOW−HIGH edge = Write data to the code.
BCD3−BUSY−IN d C1729/7 bin C1728/7 2 Generating a collective busy signal
BCD3−FAIL−IN d C1729/8 bin C1728/8 2 Generating a collective fail signal
BCD3−SIGN d − − − − HIGH = Read sign.
BCD3−SEL1 d − − − − HIGH = Read 1st BCD.
BCD3−SEL2 d − − − − HIGH = Read 2nd BCD.
BCD3−SEL3 d − − − − HIGH = Read 3rd BCD.
BCD3−SEL4 d − − − − HIGH = Read 4th BCD.
BCD3−SEL5 d − − − − HIGH = Read 5th BCD.
BCD3−SEL6 d − − − − HIGH = Read 6th BCD.
BCD3−SEL7 d − − − − HIGH = Read 7th BCD.
BCD3−SEL8 d − − − − HIGH = Read 8th BCD.
BCD3−NEW−DATA d − − − − HIGH = BCD accepted, transmit next BCD.
BCD3−EOT d − − − − HIGH = all BCDs read or "CANCEL" recognised.
BCD3−DATA−FLT d − − − − HIGH = BCD code (see chapter 3.5.12.1).
BCD3−BUSY d − − − − HIGH = Data are being transmitted to code.
BCD3−FAIL d − − − − HIGH = Data transmission to code is faulty.
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