Download Lucent Technologies Release 7 Security Camera User Manual

Chapter 5 Instruction Specifications
Name
Ladder format
DFN n
DFN n
DFN n
DFN n
Condition code
R7F3
R7F2
R7F1
R7F0
DER
ERR
SD
V
C
z
z
z
z
z
Number of steps
DFN n
Steps
AND DFN n
3
OR DFN n
4
Usable I/O
n
X
Y
Bit
R,
TD, SS,
M
CU, CT
Average Maximum
1.0
Condition
AND DFN n
Remark
Processing time (µs)
R7F4
Instruction format
OR
Trailing edge detection (AND DFN, OR DFN)
Word
WR,
←
Double word
DR,
WX WY WM TC DX DY DM
{
Number
AND DFN n
OR DFN n
Basic instructions-9
Constant
Item number
Other
0 to 511 (Decimal)
Function
•
Detects the fall of an input signal and retains the operation result only for one scan.
( ) indicates the display when the Ladder Editor is used.
Notes
•
•
DFN number may not be overlapped. (However, no error is generated even if overlapped numbers are used.)
DFN cannot use the b contact.
Program example
X00000
DFN0
R124
LD
AND
OUT
X00000
DFN0
R124
Program description
Time chart
X0
R124
1 scan time
•
•
Upon a fall of X00000, R124 turns on only for one scan.
If b-contact is used for X00000, operation will be the same as the a-contact DIF operation.
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