IDEC FC4A-C10R2 User Manual page 499

Troubleshooting Diagram 12
Correct the program to make
sure that inputs to more than 5
RXD instructions do not go on
simultaneously.
Data is not received correctly
in the user communication mode.
Are communication
parameters set correctly
using WindLDR?
YES
Is the data register
designated as receive status
used repeatedly?
NO
Is a start delimiter
specified in the RXD
instruction?
YES
Are inputs to
YES
more than 5 RXD instructions on
simultaneously?
NO
Did you check
the start delimiter of incoming
data?
YES
Did you check
the format of incoming
data?
YES
Is an end delimiter
NO
specified in the RXD
instruction?
YES
Did you check
the end delimiter of
incoming data?
YES
Is the receive
timeout value set correctly
using WindLDR?
YES
Did you make
sure of source 1 operand of the
RXD instruction?
YES
Call IDEC for assistance.
« FC4A M S
ICRO MART
Set the communication parameters
NO
to match those of the remote termi-
nal using WindLDR (see page 17-5.)
Correct the program to replace the
YES
duplicate data register with a differ-
ent data register.
NO
Use one input to start one RXD
instruction without a start delim-
iter.
Make sure that the start delimiter
NO
in the RXD instruction matches that
of the incoming data.
Make sure that the receive format
NO
of the RXD instruction matches that
of the incoming data.
Make sure that the end delimiter
NO
in the RXD instruction matches
that of the incoming data.
Make sure that the receive timeout
NO
value is larger than character inter-
vals of the incoming data.
Make sure that the receive data
NO
designated as the source 1 oper-
and is correct.
U ' M »
SER S ANUAL
29: T
ROUBLESHOOTING
Is one input
used to start multiple RXD
instructions?
YES
NO
29-19