Hitachi NJI-350B - Manual (Page 152)

Chapter 5 Instruction Specifications
5-102
Item number Control instructions-3 Name Unconditional jump (JUMP)
Ladder format Condition code Processing time ( µs) Remark
R7F4 R7F3 R7F2 R7F1 R7F0 Average Maximum
JMP n DER ERR SD V C
z 1] z z z
Instruction format Number of steps 32 
Condition Steps
JMP n 2
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
n Code number { 0 to 255 (Decimal)
Function
• If the startup condition of JMP n switches on, the control jumps the program from this instruction to the LBL n of the same
code number. Always use JMP n and LBL n in pairs.
• If the startup condition is not established, the next instruction will be executed.
• To set this instruction in conjunction with other instructions in the same arithmetic-operation box, insert this instruction at
the end of the box.
• The JMP n instruction is valid only within the same scan program. (A jump to a subroutine or interrupt scan cannot be
performed from a normal scan, nor vice versa.)
• Nesting of JMP n instructions is possible, but note so that an overload error does not occur.
Notes
• This instruction is checked prior to the execution, and if there is an error, the following error codes are set in the special
internal outputs R7F3 and WRF015. In this case, jump is not performed and the next instruction will be executed.
Special internal output Error code Error description
R7F3=1 WRF015 H0015 There is no LBL n.
H0040 A jump is attempted to a different program area.
Instruction for use
JMP n
LBL n
Program
Program
• When the startup condition turns on, it jumps to LBL n.
• If there is a timer within the program it jumped to, the progress value is updated,
but since instructions are not executed, output will not be turned on even if the
ON conditions are met.
JM
P n