4.2.10 Output From The Err Terminals - Mitsubishi Electric MELSEC-A Series User Manual

I
•
•
4. A2CCPU
- - - - - - - - - - - - - - - - - - - - MELSEC·A
4.2.10 Output from the ERR terminals
The ERR terminals are used to output the signals of MINI-53 link line errors
and self-diagnosis errors (at operation stop) mentioned below. Output of
these signals is enabled even when the A2C has stopped operation with the
sequence program. (When the ERR terminals are turned ON. M9090 is also
turned ON.)
Output of error signals other than those mentioned below is also enabled
from ERR terminals by turning ON M9089 by use of the sequence program.
Error.
ERR Error RUN
MIOIO
terminals LED
LED
Initial setting circuit error
OFF
OFF
• Communication error due to
line breakage
MINI-S3
link line
• Station error in the stop at
Lit Lit
errors faulty station detection mode
ON ON
• Send under error
• Receive overrun error
INSTRUCT CODE ERROR
PARAMETER ERROR
MISSING END INS,
CAN'T EXECUTE (P)
S.~- CHK FORMAT ERROR
diagnosis
RAM ERROR
error OPE. CIRCUIT ERROR ON Lit Flicker ON
(Operation
WDT ERROR
slop)
END NOT exECUTE
UNIT VERIFY ERROR (Stop)
FUSE BRERN OFF (Slop)
SP. UNIT ERROR (Slop)
ROM ERROR
Specification and external connection of the ERR terminals
Item Speclflcetlon
Insulation method Photocoupler insulation
Rated load voltage
24 VAC
Operating load voltage range
10.2 to 31.2 VDC
Maximum load current 50 rnA
leak current at OFF 0.1 rnA
Maximum voltage drop at ON
1.5V (50 rnA)
-
ERR+
External connection
~~~
9
ER,~-
"
24VDC
4-41