Hitachi NJI-350B - Manual (Page 161)

Chapter 5 Instruction Specifications
5-111
Item number Control instructions-10 Name End of subroutine program (RETURN SUBROUTINE)
Ladder format Condition code Processing time ( µs) Remark
R7F4 R7F3 R7F2 R7F1 R7F0 Average Maximum
RTS DER ERR SD V C
z z z z z
Instruction format Number of steps 25 
Condition Steps
RTS 1
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
Function
• This instruction declares the end of a subroutine program.
• When this instruction is executed, the program is resumed starting from the line following the CAL n instruction that called
the subroutine.
• Do not set a startup condition with this instruction.
Notes
• This instruction is checked prior to execution, and when there is an error, the following error code is 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
H0011 SB undefined
34 WRF001 H0020 SB area error
H0030 RTS startup condition error
Instruction for use
R000
R001
CAL 0
END
SB 0
CAL 1
RTS
SB 1
RTS
1] 2] 3]
Subroutine 1 program
Subroutine 0
program
Subroutine 0 program
1] The program is executed when R000 and R001 are both off
2] The program is executed when R000 is on and R001 is off
CAL 0 is executed, then the subroutine 0 program is executed.
CAL 1 is not executed, the subroutine 0 program is terminated and the
execution is returned to the code following the CAL 0.
3] The program is executed when R000 and R001 are both on
CAL 0 is executed, then the subroutine 0 program is executed.
CAL 1 is executed, then the subroutine 1 program is executed.
The subroutine 1 program is completed and execution is returned to the code
following the CAL 1.
The subroutine 0 program is completed and execution is returned to the code
following the CAL 0.
RT
S