Yaskawa FSP Amplifier FlexWorks - Manual (Page 216)

Serial Interface Protocol
216
6.3. Troubleshooting
P ROBLEM P OSSIBLE C AUSE S OLUTION
Unable to establish
communication with
FSP Amplifier
Communication cable is
disconnected.
Check the cabling.
Communication setting is
different than FSP
Amplifier requirements. See Section 4.1.1,
Communication Settings.
FSP Amplifier axis address
is different than the one
referred to by the master. Match axis address (a –
second byte) to FSP
Amplifier axis address
(Pn000.2).
FlexWorks (or any other
program that
communicates with the
COM port) is online.
Close all programs that
communicate with COM
port.
The response
message format or
value is different
than expected. The response message
which accepts Data
Request Commands
response does not
necessarily match the
master command. Data
Request Command
response will match the
master command unless a
fault was occur and then
fault acknowledgment will
be accepted before.
To accept a specific
response message, write
a loop with POLLING
command (Command
Operational Code 0x00)
until the appropriate
response message is
accepted.
After a variable has been
watched in the FlexWorks
variable watch-window
(even if FlexWorks is no
longer open), message
response type is changed
to 3 (m=3) and the
message format holds the
variable value as well.
To delete a variable from
the watch list, set
FlexWorks to Online
mode. Delete the desired
variable(s) and return to
Offline mode. If
FlexWorks is closed,
rerun the program and
go Online and then
Offline.
No checksum value
accepted on the
response message.
Pn2C6 setting is different
than 0x0001. Set Pn2C6=0001 and
reset FSP Amplifier.