FT1A S
MART
A
XIS
U
SER
’
S
M
ANUAL
FT9Y-B1382
14-5
14: P
ROGRAM
B
RANCHING
I
NSTRUCTIONS
DJNZ (Decrement Jump Non-zero)
Applicable CPU Modules
Valid Devices
For the valid device address range, see pages 6-1 and 6-2
(Basic Vol.).
Since the DJNZ instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instruction should be used as required.
The label number can be 0 through 255. Make sure that a LABEL instruction of the label number used for a DJNZ instruction is programmed. When
designating S2 using a data register, the value for the label is a variable. When using a variable for a label, make sure that all probable LABEL
numbers are included in the user program. If a matching label does not exist, a user program execution error will result, turning on special internal
relay M8004 and the ERR LED on the CPU module.
When input is on, the value stored in the data register designated by S1 is decremented by one
and is checked. If the resultant value is not 0, program execution jumps to address with label 0
through 255 designated by S2. If the decrement results in 0, no jump takes place, and program
execution proceeds with the next instruction.
DJNZ
S1
*****
S2
*****
FT1A-12
FT1A-24
FT1A-40
FT1A-48
FT1A-Touch
X
X
X
X
X
Device
Function
I
Q
M
R
T
C
D
Constant
Repeat
S1 (Source 1)
Decrement value
—
—
—
—
—
—
X
—
—
S2 (Source 2)
Label number to jump to
—
—
—
—
—
—
X
0-255
—
Summary of Contents for microsmart pentra
Page 1: ...FT1A SERIES FC9Y B1382 Ladder Programming Manual ...
Page 6: ...Preface 5 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...
Page 104: ...7 DATA COMPARISON INSTRUCTIONS 7 10 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...
Page 122: ...8 BINARY ARITHMETIC INSTRUCTIONS 8 18 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...
Page 138: ...10 SHIFT ROTATE INSTRUCTIONS 10 12 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...
Page 162: ...11 DATA CONVERSION INSTRUCTIONS 11 24 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...
Page 188: ...12 CALENDAR COMPARISON INSTRUCTIONS 12 26 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...
Page 198: ...15 REFRESH INSTRUCTIONS 15 4 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...
Page 202: ...16 INTERRUPT CONTROL INSTRUCTIONS 16 4 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...
Page 266: ...20 DUAL TEACHING TIMER INSTRUCTIONS 20 4 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 318: ...25 USER COMMUNICATION INSTRUCTIONS 25 22 FT1A SMARTAXIS USER S MANUAL FT9Y B1382 ...