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Function
(1) When the CALL (P) instruction is executed, executes the subroutine program of the program specified by Pn.
The CALL (P) instruction can execute subroutine programs specified by a pointer
within the same program file and subroutine programs specified by a common pointer.
(2) When function devices (FX, FY, FD) are used by a subroutine program, specify a device with
the function device. The contents to the devices specified by
(a) Prior to execution of the subroutine program, bit data is transmitted to FX, and word data is transmitted to FD.
(b) After the execution of the subroutine program, the contents of FY and FD are transmitted to the corresponding
devices.
(c) The processing units for the function devices are as follows:
• FX, FY : Bits
• FD
: 4-word units
The size of the data to be dealt with will differ depending on the device specified in the argument. The device
specified as a function device should be secured for the data size. An error will occur if it cannot be secured for the
data size.
Function devices
• FX
• FY
• FD
*1:
An error will not occur even when the device number specified by
bit device.
[Main routine program]
X0
(3)
to
can be used with the CALL (P) instruction.
S1
S5
Main routine
program
CALL Pn
END
Device
Bit device
When bit designation is made for word device
When digit designation of a bit device is used *1
Word device
CALL
P0
M0
D0
D30
Subroutine
program
Pn
RET
to
are as indicated below.
S1
S5
Data Size
1 point
1 bit
4 words
The data size varies depending on
4 words
the instruction to be used.
to
is not a multiple of 16 at the digit designation of the
S1
S5
Occupies from D30 to D33 (Transfer to FD2).
Occupies from D0 to D3 (Transfer to FD1).
Occupies M0 (Transfer to FX0).
CALL, CALLP
to
corresponding to
S1
S5
Remark
––
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