Chapter 5 Instruction Specifications
5-109
Item number
Control instructions-8
Name
Call subroutine
Ladder format
Condition code
Processing time (
µ
s)
Remark
R7F4
R7F3
R7F2
R7F1
R7F0
Average Maximum
CAL n
DER
ERR
SD
V
C
z
1]
z
z
z
Instruction format
Number of steps
24
Condition
Steps
CAL 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 99 (Decimal)
Function
•
If the startup condition of CAL n is on, this instructions executes the subroutine program (the program sandwiched by SB n and
RTS) of the same code number.
•
If the startup condition is off, the next program is executed.
•
Up to 5 levels of CAL (nesting) for another subroutine can be performed within a subroutine.
•
It is possible to call a subroutine from within an interrupt scan program.
Notes
•
If an error is generated during the execution of the instruction, an error code will be set in the special internal outputs R7F3 and
WRF015, and the following program will be executed.
Special internal output
Error code
Error description
R7F3=1
WRF015
H0013
SB undefined
H0041
Nesting error
Instruction for use
R000
CAL n
SB n
RTS
END
Other program
Subroutine program
R000 turns
ON
R000 turns
OFF
•
When R000 is on, a subroutine program is executed by CAL n. After
the execution, the program is re-executed from the code following the
CAL n.
•
When R000 is off, the subroutine program is not executed, and the
next program is executed.
CA
L n
Summary of Contents for HIDIC MICRO-EH
Page 1: ...HITACHI PROGRAMMABLE CONTROLLER APPLICATION MANUAL NJI 350B X ...
Page 12: ...MEMO ...
Page 14: ...Chapter 1 Features 1 2 MEMO ...
Page 50: ...Chapter 4 Product lineup and wiring 4 18 MEMO ...
Page 196: ...Chapter 5 Instruction Specifications 5 146 ...
Page 263: ...Chapter 11 Communication Specifications 11 10 MEMO ...
