Mitsubishi Electric A173UHCPU Programming Manual page 321

APPENDICES
Error Message
"SP.UNIT ERROR"
(When a FROM, TO instruction is executed)
"LINK PARA.ERROR"
On switching on the power or resetting.
On switching from
STOP RUN
to
PAUSE STEP RUN
"OPERATION ERROR"
(When a command is executed)
"BATTERY ERROR"
At any time
However, no check is performed when
M9084 is ON.
Table 1.1 CPU Error Code List (Continued)
Contents of
Special
CPU
Register
Status
D9008
(BIN Value)
(1) A location where there is no special function module
has been accessed (when the FROM, TO instruction
Stopped
46 was executed).
(RUN)
(1) The data written to the link parameter area when link
range settings are made by parameter setting at a
peripheral device differ for some reason from the
47 RUN parameter data read by the CPU.
(2) The setting for the total number of slave stations is
"0".
(1) The result of BCD conversion is outside the
stipulated range (max. 9999 or 99999999).
RUN (2) A setting exceeding the stipulated device range has
50
(Stopped) been made and operation is therefore impossible.
(3) A file register has been used in the program without
having made a file register capacity setting.
(1) The battery voltage has fallen below the stipulated
value.
(2) The battery's lead connector has not been installed.
70 RUN
APP − 4
Error Contents and Cause Corrective Action
(1) Read the error step using a pe-
ripheral device, check the contents
of the FROM, TO instruction at that
step, and correct it using the
peripheral device.
(1) Write the parameters again and
check.
(2) If the error is displayed again, there
is a hardware fault.
Contact your nearest Mitsubishi
service center, agent, or office, and
explain the problem.
(1) Read the error step with a
peripheral device, and correct the
program at that step.
(Check the device setting range,
BCD conversion value, etc.)
(1) Replace the battery.
(2) If the battery is used to back up the
RAM memory or to retain memory
contents during momentary power
interruptions, install a lead
connector.