Yaskawa MP3200 Troubleshooting Manual - Manual (Page 55)

4.1 Troubleshooting Ethernet Communications
Troubleshooting Quick Reference
4-5
T
roubleshooting Communications and Motion Control
Troubleshooting Quick Reference
The following table provides examples of problems in Ethernet communications that occur frequently and
can be corrected relatively simply.
If you cannot eliminate the error with the following table, refer to the following section.
4.1 Troubleshooting Ethernet Communications (page 4-2)
* Use the programming shown on the next page to retry Send Message Execute Commands.
Problem Cause Correction
Cannot go online
from the
MPE720.
The IP address of the PC is set to be automati-
cally assigned.
Set the IP address of the PC manually as
shown in the following example.
218IFD: 192.168.1.1
PC: 192.168.1.10
Message com-
munications do
not start.
The E-INIT switch on the CPU Unit/CPU Mod-
ule is set to ON. (The local IP address that is set
in the Module’s detailed definition is different
from the actual local IP address.)
Set the E-INIT switch on the front of the
CPU Unit/CPU Module to OFF and then
turn the power supply OFF and ON again.
This switch does not necessarily have to be
set to OFF to perform message communica-
tions. However, always set unique IP
addresses for the local IP address that is set
on the rotary switches and the IP address of
the remote station that is set in the connec-
tion parameters.
The data was not saved to the flash memory or
the power supply was not turned OFF and ON
again after changing the transmission definition
or connection parameters.
Save the data to the flash memory and then
turn the power supply OFF and ON again.
You must turn the power supply OFF and
ON again after making changes or additions
to the IP addresses or connection parameters
to enable the new settings.
No message function was created or executed in
the ladder program.
Create a message function in the ladder pro-
gram.
No message function is required for auto-
matic data reception or I/O message commu-
nications with the 218IFD.
The Dev-Typ (Transmission Device Type) set-
ting in the message function is not correct.
Set Dev-Typ to 16 for the 218IFD.
The remote device does not have a communica-
tions function or setting for communicating
with the Machine Controller.
Check the communications function or set-
ting of the remote device.
Message com-
munications are
not completed.
UDP communications stopped.
Write the program* to retry Send Message
Execute Commands with the MSG-SNDE
message function.