5 TROUBLESHOOTING
5.5 Troubleshooting by Symptom
121
5
Class1 instance communications cannot be performed
The following table lists the actions to be taken if Class1 instance communications cannot be performed.
Class1 tag communications cannot be performed.
The following table lists the actions to be taken if Class1 tag communications cannot be performed.
Class3 message communications cannot be performed
The following table lists the actions to be taken if Class3 message communications cannot be performed.
Check item Action
Has the EtherNet/IP device to connect been registered in
EtherNet/IP Configuration Tool?
If the EtherNet/IP device to connect is not displayed in the network configuration setting of
EtherNet/IP Configuration Tool, add the device. ( Page 94 Procedure for Registering EtherNet/
IP Devices)
Has communication start processing been performed
correctly with 'EtherNet/IP communication start request'
(Y10)?
• Check that 'EtherNet/IP communication start request' (Y10) is on.
• If 'EtherNet/IP data link continuation specification request' (Un\G16634) is set to 16 (continue
EtherNet/IP communication), turn 'EtherNet/IP communication start request' (Y10) on again.
Is the instance ID specified correctly? Referring to the manual of the EtherNet/IP device connected, check the parameters of the
originator to see that the specified instance ID is available for receiving request.
When the specified instance ID is not available for receiving request, change the instance ID and
write the parameter again.
Is input data stored in 'Class1 Input Area' (Un\G65536 to
Un\G98303)?
When input data is not stored in 'Class1 Input Area' (Un\G65536 to Un\G98303), check the
following items.
• Check whether that the module FB (M+RJ71EIP91_Class1GetInputData) is used.
• When "Block assurance per connection" in "Application Setting" is set to "Enable" and the
module FB (M+RJ71EIP91_Class1GetInputData) is not used, check 'Class1 Connection Input
data update state' (Un\G32768 to Un\G33023) to see that the input data is read.
Is output data set in 'Class1 Output Area' (Un\G196608
to Un\G229375)?
When output data is not sent to EtherNet/IP devices, check the following items.
• Check whether that the module FB (M+RJ71EIP91_Class1SetOutputData) is used.
• When "Block assurance per connection" in "Application Setting" is set to "Enable" and the
module FB (M+RJ71EIP91_Class1GetInputData) is not used, check 'Class1 Connection Output
data update state' (Un\G33024 to Un\G33279) to see that the output data is written.
Check item Action
Has the EtherNet/IP device to connect been registered in
EtherNet/IP Configuration Tool?
If the EtherNet/IP device to connect is not displayed in the network configuration setting of
EtherNet/IP Configuration Tool, add the device. ( Page 94 Procedure for Registering EtherNet/
IP Devices)
Has communication start processing been performed
correctly with 'EtherNet/IP communication start request'
(Y10)?
• Check that 'EtherNet/IP communication start request' (Y10) is on.
• If 'EtherNet/IP data link continuation specification request' (Un\G16634) is set to 16 (continue
EtherNet/IP communication), turn 'EtherNet/IP communication start request' (Y10) on again.
Is the tag name specified correctly? Check that the tag name of the external device on the Producer Tag side matches with the tag
name on the Consumer Tag side. If they are not matched, check the tag name and write the
parameter again.
When the target is the RJ71EIP91, has the multicast
communication been performed with other originators?
• Match the settings of the RJ71EIP91 (originator) with those of other originators that are being
communicated with.
• Check the settings of other originators that are being communicated with the EtherNet/IP device.
• Configure the system so that the EtherNet/IP device performs communications only with the
RJ71EIP91 (originator).
When the target is the RJ71EIP91, is the number of
connections of the node information 256?
Configure the system so that the number of EtherNet/IP devices that perform Class1 tag
communications is 256 or less including the RJ71EIP91 (originator).
Check item Action
Are the commands received from the EtherNet/IP device
supported by the RJ71EIP91?
Check whether the commands being sent are those listed in the following section.
Page 157 Details of Message Communication Support Command
Has communication start processing been performed
correctly with 'EtherNet/IP communication start request'
(Y10)?
• Check that 'EtherNet/IP communication start request' (Y10) is on.
• If 'EtherNet/IP data link continuation specification request' (Un\G16634) is set to 16 (continue
EtherNet/IP communication), turn 'EtherNet/IP communication start request' (Y10) on again.
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