9. TROUBLESHOOTING
IMR01Y35-E3
114
COM-JG
Problem Possible
cause
Solution
No connection, disconnection,
breakage or wrong wiring of
PROFIBUS cable
Confirm the connection method or
condition and connect correctly
RUN lamp: Turns on
RX/TX lamp: Turns off
Termination setting of a
PROFIBUS connector is wrong
Sets termination setting correctly
The GSD file of the COM-JG is
not specified in the
configuration.
Specify the GSD file of COM-JG.
The PROFIBUS address
specified when configured does
not match that set by the
COM-JG
Match both of the PROFIBUS address
The read/write static data length
(number of words) when
hardware configured does not
match the data length (number
of words) set when
communication item assigned
Match both of the data length (number
of words)
Refer to
8. USAGE EXAMPLE
(P. 107 to 109).
RUN lamp: Turns on
RX/TX lamp: Turns on
ONL lamp: Turns off
The order of specifying data is
incorrect at the time of assigning
PLC registers when configured,
or two or more essential items
are specified
Always specify the data in the following
order
1. Error state
2. Write permission
3. Write control
4. Static input
5. Static output
6. Dynamic I/O
For the above 4 to 6, two or more items
can be specified, but for the above 1 to 3
only one item can be specified
The read/write data length of the
data request is over the limit
(170 bytes).
Use the following equation to shorten the
data length to 170 bytes or less.
[
Read data]
Number of static read data
×
Number of connection channel
×
2
+
Number of dynamic data
×
6
+
12*
≤
170
* (Error state register: 1 byte)
+
(Write permission flag register: 1 byte)
+
(Write control flag register: 10 byte)
=
12
[
Write data]
Number of static write data
×
Number of connection channel
×
2
+
Number of dynamic data
×
6
+
11*
≤
170
* (Write permission flag register: 1 byte)
+
(Write control flag register: 10 byte)
=
11
Continued on the next page.
