Panasonic LP-RF Series Setup & Maintenance Manual page 195

„ External control
Troubles
Laser marker is not in remote
mode.
The connection with external
devices is inadequate.
Communication with
Communication parameter
the external device
settings are incorrect.
cannot start.
The communication setting
was changed at the time of
backup file restoration.
There are noises coming
from surrounding equipment.
The settings in the system
settings screen are not
Control by I/O fails.
consistent with the actual
control method.
Control by Command data is not
communication received from external
command fails. equipment.
Causes
• Select the remote mode by following the procedure indicated
in "Setup/Maintenance Guide".
• Check if the entering method of the remote mode set in the
system settings screen (I/O or PC software) and the actual
control method are consistent.
• If the entering method of the remote mode is changed in the
system settings screen, restart the laser marker.
• Check connections with external equipment for mis-
connection, disconnection or contact failure due to any loose
connector.
• Check for continuity using tester or the like.
• For RS-232C connection, confirm the wiring of the external
device including the loop back connection.
• Match communication parameter settings to external
equipment.
• If any of the communication settings (Ethernet settings,
EtherNet/IP settings, or RS-232C usage) in System settings
screen are changed, restart the laser marker.
• If you use DHCP of EtherNet/IP settings, confirm the
connection of the DHCP server of your network.
• When using RS-232C, specify the "Flow control" to "None"
at the communication port settings of the external control
device.
Check the communication setting. If Ethernet or EtherNet/IP
is used, check the IP address, etc. When the backup file is
restored, the communication setting is overwritten by the backup
data.
Protect laser marker against noises as follows:
• Securely ground the frame ground terminal of laser marker or
surrounding equipment.
• Isolate power and signal lines from each other if they have
been routed in parallel.
• Shield signal line.
• Isolate power supply for laser marker from other equipment.
• Use noise cut transformer to absorb noises from power
supply.
• Check the settings of the control method under "Operation/
information" tab in System settings screen. If "command" is
selected to the corresponding operation, change it to "I/O".
• Check the I/O settings under "Inputs/outputs" tab in System
settings screen.
• If you use EtherNet/IP or PROFINET, check the "Control
method of input signals" under "Communication" tab in
System settings screen.
• If any of the above settings are changed in the system
settings screen, restart the laser marker.
• Check the command history in the "Maintenance" screen of
Laser Marker NAVI smart.
• Using commercially available line monitor or protocol
analyzer, check if the external equipment transmits data.
ME-LPRF-SM-11
Measures
195