Mitsubishi Electric L26CPU-BT User Manual page 356

(2) Problems on abnormal cyclic data of a remote device station
Description
Check item
of problem
Refresh data
D1-1
area
Unable to
read/write cyclic
data
Parameter
D1-2
setting
Unable to
Parameter
read/write word D2-1
setting
data
Unable to
read/write the Parameter
D3-1
lower area of the setting
cyclic data.
Unable to RY- Refresh
D4-1
output. instruction
Unable to turn
the remote
device station to D5-1 Initial setting
Ready (Xn1B:
ON).
354
Check contents
Is the automatic refresh set
properly?
(RX, RY, RWw, RWr, SB,
SW)
Is the access to buffer
memory correct?
(RX, RY, RWw, RWr, SB,
SW)
Is there any fault in the
reserved station setting?
Is there any fault in the
consistency with the
parameter?
Is there any fault in the
consistency with the
parameter?
Is the refresh instruction
(SB0003) executed?
Is the initial setting (Xn18)
completed?
Is the remote device station
initialize procedure
registration completed
normally?
Is there any fault in the
remote device station initial
setting?
Check procedure
Is not the area overlapped with
the program or device used at
other network?
Check if there is no overlapping
with devices used in the
program or in other networks.
Check if the reserved station is
not set or the corresponding
station bits (SW0074 to
SW0077) are not set to "1".
Check if any remote I/O station
is installed to the
corresponding station number.
Check if any device, which
number of occupied stations is
small, is installed to the
corresponding station number.
Check if the refresh instruction
(SB0003) is turned on.
Check if the initial data
processing request (Xn18) is
turned off.
Check if the remote device
station initialize procedure
registration (SB000D) is turned
on.
Check the result of the remote
device station initialize
procedure registration
instruction.
Check the parameter.
Check the program.
Corrective action
Set so as not to overlap
with devices used in the
program or in other
networks.
Access the corresponding
station address.
Set so as not to overlap
with the device used in the
program.
Release the reserved
station setting.
Combine the parameter
and the installed model.
Combine the number of
occupied stations of the
parameter and installed
model.
Turn on the refresh
instruction (SB0003).
Execute the initial data
processing.
Review the remote device
station initialize procedure
registration.
Set the remote device
station initial setting
properly.