Mitsubishi Electric Melsec Q Series Programming Manual page 485

12 ERROR CODE LISTS
Error Details
code code
Name
Read device data
from CPU shared
16421 —
memory (MULTR)
execution error
Write device data to
intelligent function
16422 —
module (TO)
execution error
Read device data
from intelligent
16423 — function module
(FROM) execution
error
Error factor
Description
• Number of words (n) to be read is outside
the range of 1 to 256.
• The CPU shared memory first address
(S2) of the data which it will be read is
outside the range (000H to FFFH) of the
CPU shared memory address.
• The CPU shared memory first address
(S2) of the data which it will be read +
number of words (n) to be read is outside
the range (000H to FFFH) of the CPU
shared memory address.
• Start device No. (D) which stores the
reading data + number of words (n) to be
read is outside the device range.
• Except 3E0H/3E1H/3E2H/3E3H is set at
(S1).
• The CPU which reads is resetting.
• The errors are detected in the CPU which
read.
• (D) is a bit device and the device number
is not a multiple of 16.
• PX/PY is set in (D) to (D)+(n-1).
• Number of words (n) to be written is
outside the range of 1 to 256.
• Motion CPU cannot communicate with
intelligent function module at the
instruction execution.
• Abnormalities of the intelligent function
module were detected at the instruction
execution.
• I/O No.s specified with (D1) differ from the
intelligent function module controlled by
the self CPU.
• The address specified with (D2) is outside
the buffer memory range.
• Start device No. (S) which writing data are
stored + number of words (n) to be written
is outside the device range.
• (S) is a bit device and the device number
is not a multiple of 16.
• PX/PY is set in (S) to (S)+(n-1).
• Number of words (n) to be read is outside
the range of 1 to 256.
• Motion CPU cannot communicate with
intelligent function module at the
instruction execution.
• Abnormalities of the intelligent function
module were detected at the instruction
execution.
• I/O No.s specified with (S1) differ from the
intelligent function module controlled by
the self CPU.
• The address specified with (S2) is outside
the range buffer memory.
• Start device No. (D) which stores the
reading data + number of words (n) to be
read is outside the device range.
• (D) is a bit device and the device number
is not a multiple of 16.
• PX/PY is set in (D) to (D)+(n-1).
12 - 18
Error Processing
• Correct the program so that the number of
words (n) to be read is within the range of 1
to 256.
• Correct the program so that the CPU
shared memory first address (S2) of the
data which it will be read is within the
device range of CPU shared memory
address.
• Correct the program so that the CPU
shared memory first address (S2) of the
data which it will be read + number of
words (n) to be read is within the range of
CPU shared memory address.
• Correct the program so that start device
No. (D) which stores the reading data +
number of words (n) to be read is within the
device range.
• Correct the program so that
3E0H/3E1H/3E2H/3E3H is set at (S1).
• Check that the resetting flag (SM240 to
SM243) is OFF, then correct the program to
execute the MULTR instruction.
• If the errors are detected in the CPU which
read, exchange the CPU.
• When (D) is a bit device, set the device
number to be multiple of 16.
• When (D) is a bit device, do not set PX/PY.
• Correct the program so that the number of
words (n) to be written is within the range of
1 to 256.
The block processing • Replace the intelligent function module if
in execution is there is a fault.
stopped and the next • Correct the program so that the first I/O
block is executed. No.s specified with (D1) is intelligent
function module controlled by the self CPU.
• Correct the program so that the address
specified with (D2) is within the buffer
memory range.
• Correct the program so that start device No.
(S) which writing data are stored + number
of words (n) to be written is within the
device range.
• When (S) is a bit device, set the device
number to be multiple of 16.
• When (S) is a bit device, do not set PX/PY.
• Correct the program so that the number of
words (n) to be read is within the range of 1
to 256.
• Replace the intelligent function module if
there is a fault.
• Correct the program so that the first I/O
No.s specified with (S1) is intelligent
function module controlled by the self CPU.
• Correct the program so that the address
specified with (S2) is within the buffer
memory range.
• Correct the program so that start device No.
(D) which stores the reading data + number
of words(n) to be read is within the device
range.
• When (D) is a bit device, set the device
number to be multiple of 16.
• When (D) is a bit device, do not set PX/PY.
Corrective Action