Signal Processing - Lenze 9300 System Manual

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Function library
7.5.28.2

Signal processing

Reading the BCDs:
Output
BCDx-EOT
BCDx-NEW-DATA
BCDx-DATA-FLT
BCDx-FAIL
Fig. 7-82 Signal shape for FB BCD1 for the transmission to the target code
Transmission sequence of data to the target code:
Output
BCDx-LOAD
BCDx-BUSY
BCDx-FAIL
For the data conditioning for the target code see FB FEVAN.
7-120
Signal Function
LOW Beginning of the BCD reading.
HIGH If
•
all 8 absolute value digits and the sign are transmitted or
•
"CANCEL" has been identified.
LOW After a LOW-HIGH edge at BCD-READ.
HIGH After the transmission of a BCD is completed.
HIGH If "BCD error" has been identified (see table in chapter 7.5.28.1).
HIGH If
•
the permissible value range for the target code is exceeded or
•
BCDx-DATA-FLT = HIGH has occurred before.
C o r r e c t t r a n s m i s s i o n
Signal Function
LOW-HIGH edge Transmits the signal to the target code.
HIGH For the time of transmission
HIGH If a transmission error occurs.
Only another LOW-HIGH edge at BCDx-LOAD switches BCDx-FAIL = LOW.
Transmission error:
•
No target code
•
No target subcode.
•
transmitted data are out of the target code limits.
•
"BCD error" has been identified (BCDx-DATA-FLT = HIGH).
•
The target code is inhibited. Code can only be written when the controller is inhibited.
EDSVS9332P-D21 EN 3.0
W r o n g t r a n s m i s s i o n
B C D 1 x - F A I L
B C D 1 x - B U S Y
B C D 1 x - L O A D
( 7-204)
BCD_A
L