Hitachi NJI-350B - Manual (Page 151)

Chapter 5 Instruction Specifications
5-101
Item number Control instructions-2 Name Scan conditional end
Ladder format Condition code Processing time ( µs) Remark
R7F4 R7F3 R7F2 R7F1 R7F0 Average Maximum
CEND (s) DER ERR SD V C Upper case :
z z z z z 5  Conditions
Instruction format Number of steps do not meet
Condition Steps Lower case :
CEND (s) 2 707  Conditions meet
Bit Word Double word
Usable I/O
X Y
R,
M
TD, SS,
CU, CT WX WY
WR,
WM TC DX DY
DR,
DM C
o
nstant
Other
s Scan end condition { { {
Function
• If the scan end condition (s) is on, the execution of this instruction returns to the head of the scan program and executes the
program.
• If (s) is off, the next instruction is executed.
• This instruction can only be used in normal scan programs, and can be used as many times as desired.
• This instruction can specify a startup condition. In this case, if the startup condition and (s) are both on, this instruction is
executed.
Notes
• The CEND instruction is checked prior to the execution, and if there is an error, the following error codes are set in the
special internal output WRF001. Also, the CPU error code '34' is set to special internal output WRF000.
CPU error code Special internal output Error code Error description
34 WRF001 H0023
The CEND instruction is found after the END
instruction.
Instruction for use
CEND (R000)
CEND (R001)
END
Program head
Normal scan program
Normal scan program
Normal scan program
When R000 is on, to
program head
When R000 is off, the next
instruction is executed.
When R001 is on, to
program
When R001 is off, the next
instruction is executed.
CE
ND (s
)