Communications Errors And Countermeasures - Omron NS Programming Manual

Section 5 Troubleshooting and Maintenance
NS Series Programming Manual
5-2-7

Communications Errors and Countermeasures

This section describes the communications errors that may occur during operation and possible coun-
termeasures.
Refer to 5-2-9 Troubleshooting Errors with EtherNet/IP Communications.
PT Operation When Errors Occur
An error message is displayed on the PT when an error occurs, and a buzzer will sound if Buzzer
sound under the System Menu is set to ON or ERR ON. Error messages are displayed when Commu-
nications auto return is turned OFF under the System Menu.
User Operation When Errors Occur
Check the error message displayed and press the OK Button. When the OK Button is pressed, the
screen before the communications error will be returned and operation will restart. Alternatively, the
display may automatically switch to the System Menu. Check the settings under the System Menu and
change if necessary.
The information in the following table will be displayed, depending on the error.
Screen No.:
Allocated host:
MRES:
SRES:
N o t e
N o t e
N o t e
♦
If Communications auto return is set to ON and an error occurs at one port while both ports are
being used, the other port will continue communications.
♦
When a communications error occurs, press the OK Button in the error message to return the
original screen. The numeral and other data on the original screen will be the data from before the
error occurred.
The following messages are displayed for communications errors.
Message
Addressing error exists in the
screen, alarm, data log, or
macro. Correct address
setting by the CX-Designer.
Screen No.: XXXX
Allocation host: XXXX
MRES=XXX, SRES=XXXX
Screen number
Host name
Main response code
Sub-response code
Cause
The set address is
invalid.
Possible countermeasure
Press the OK Button to move to the System
Menu.
Check the communications settings under
data check, in particular that the address is
valid.
Use CX-Designer to change the settings.
5-18
5-2 Error Messages