13: T
ROUBLESHOOTING
13-24
FC5A M
ICRO
S
MART
U
SER
’
S
M
ANUAL
FC9Y-B1268
Troubleshooting Diagram 17
Did you make
sure of source 1 device of the RXD
instruction?
Call IDEC for assistance.
NO
Are communication
parameters set correctly
using WindLDR?
Are inputs to
more than 5 RXD instructions on
simultaneously?
Data is not received correctly
in the user communication mode.
Set the communication parameters to
match those of the remote terminal
using WindLDR. MicroSmart can use
constants only for start and stop delim-
iters (see page 10-5.)
Is the data register
designated as receive status used
repeatedly?
Correct the program to replace the
duplicate data register with a different
data register.
YES
NO
Is a start delimiter
specified in the RXD
instruction?
YES
Did you check
the start delimiter of incoming
data?
Did you check
the format of incoming
data?
Is an end delimiter
specified in the RXD
instruction?
Did you check
the end delimiter of
incoming data?
Is the receive
timeout value set correctly
using WindLDR?
Is one input
used to start multiple RXD
instructions?
Make sure that the receive format of
the RXD instruction matches that of
the incoming data.
Correct the program to make sure
that inputs to more than 5 RXD
instructions do not go on simulta-
neously.
NO
YES
NO
YES
YES
YES
YES
YES
YES
NO
YES
NO
Use one input to start one RXD
instruction without a start delimiter.
Make sure that the start delimiter in
the RXD instruction matches that of
the incoming data.
Make sure that the end delimiter in
the RXD instruction matches that of
the incoming data.
Make sure that the receive timeout
value is larger than character intervals
of the incoming data.
Make sure that the receive data des-
ignated as the source 1 device is cor-
rect.
YES
NO
NO
NO
NO
NO
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