150
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
6 What to Understand before Programming
6.5 General Rules for Applied Instructions
6.5.3
Handling of operation error flag
When there is an error in the applied instruction configuration, target device or target device number range
and an error occurs while operation is executed, the following flag turns ON and the error information is
stored.
1. Operation error
*1.
Compatible with the FX
0
, FX
0S
, FX
0N
, FX
1
, FX
2
, FX
2C
, FX
1S
, FX
1N
, FX
2N
, FX
1NC
and FX
2NC
Series.
• When an operation error has occurred, M8067 is set, D8067 stores the operation error code number, and
D8315 and D8314 (32 bits in total) store the step number in which the error has occurred.
• When the error occurrence step is up to the 32767th step, the error occurrence step can be checked in
D8069 (16 bits).
• If another error occurs in another step, the stored data is updated in turn to the error code and step number
of the new error. (These devices are set to OFF when errors are cleared.)
• When the PLC mode switches from STOP to RUN, these devices are cleared instantaneously, and then
set to ON again if errors have not been cleared.
2. Operation error latch
*1.
Compatible with the FX
0
, FX
0S
, FX
0N
, FX
1
, FX
2
, FX
2C
, FX
1S
, FX
1N
, FX
2N
, FX
1NC
and FX
2NC
Series.
• When an operation error has occurred, M8068 is set, and D8313 and D8312 store the step number in
which the error has occurred.
• Even if another error has occurred in another step, the stored data is not updated, and remains held until
these devices are forcibly reset or until the power turns OFF.
• When the error occurrence step is up to the 32767th step, the error occurrence step can be checked in
D8068 (16 bits).
Error flag
Device storing error code
Device storing error occurrence
step
Device storing error
occurrence step
*1
M8067
D8067
D8315, D8314
D8069
Error flag
Error code storing device
Error occurrence step storing
device (32 bits)
Error occurrence step storing
device
*1
M8068
−
D8313, D8312
D8068