54
YASKAWA
TOEP YAICOM 22A BACnet MS/TP Installation & Technical Manual
Code
Name
Causes
Possible Solutions
bUS
Option
Communication Error
The drive did not receive a
signal from the controller.
The communications cable
wiring is incorrect.
•
Check for wiring errors.
•
Correct the wiring.
An existing short circuit or
communications disconnection
Check disconnected cables and short
circuits and repair as needed
A data error occurred due to
electric interference
•
Prevent noise in the control circuit,
main circuit, and ground wiring.
•
If you identify a magnetic contactor
as a source of noise, install a surge
absorber to the contactor coil.
•
Use only recommended cables or
other shielded line. Ground the shield
on the controller side or the drive
input power side.
•
Separate all communication wiring
from drive power lines. Install an
EMC noise filter to the drive power
supply input.
•
Counteract noise in the master
controller (PLC).
Option is damaged
If there are no problems with the wiring
and the error continues to occur, replace
the option.
Connection Time-out
The option cannot pass the MS/TP token
to another device on the BACnet MS/TP
network (sole master).
•
Make sure that the option MAC ID is
set correctly.
•
Make sure that the
bUS
fault time
parameters are set correctly
[F6-04
and F7-16]
.
EF0
Option Card External
Fault
The option received an external
fault from the controller.
1.
Find the device that caused the
external fault and remove the cause.
2.
Clear the external fault input from
the controller.
A programming error occurred
on the controller side.
Examine the operation of the controller
program.
oFA00
Option Not
Compatible with Port
The option connected to
connector CN5-A is not
compatible.
Connect the option to the correct
connector.
•
Use connector CN5-A when you
connect the option.
To use other options, refer to those
option manuals.
