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Programming Examples
Troubleshooting the OP-406 Panel
In this section, we explain how to isolate potential problems which may occur while
using the OP--406. Because these panels have only a power supply connection and
a communications connection, (no DIP switches or controls to set, and cannot be
used in multiple panel arrangements), troubleshooting is very straightforward.
If the panel LED display, the Button indicators, and the RX and TX LEDs on the back
of the panel do not illuminate, the panel is most likely not receiving input power.
Carefully check your connections to make sure they are tight. If this does not help,
see Chapter 2 and review the input power requirements.
Remember, all PLC’s require that you use the OP--PS400 5V plug-in power supply
(or equivalent) for configuration. Some PLC’s also require that you use this power
supply for operation. Make sure that the 120 VAC receptacle you plug the power
supply into has power. Also, if you are using another 5V power supply, make sure
that it has a center negative connector.
If using a PLC that supplies 5V for operation through the communications cable,
check to make sure sure that pin 5 on the lead going into the panel has a 5V signal.
Make sure that you are using the proper configuration cable (OP--CCBL) and that it
is securely connected. Check your configuration program and make sure the proper
communications port is selected, such as COM1 or COM2. Review your
configuration settings to make sure they are correct. Remember, the OP--WINEDIT
Help screens provide a lot of valuable information.
Observe the RX and TX LEDs on the rear panel. They should be steady flashing or
glow (depending on the baud rate). If not, make sure that you are using the proper
communications cable and that it is securely connected. Review your configuratiion
settings and make sure that the communications information for your PLC, address
number, baud rate, protocol type, etc. is correct. Check the user manual for your PLC
for the proper settings.
See “Technical Support” in Chapter 1 for additional information.
Troubleshooting
Power
Supply Problems
Configuration
Problems
Communication
Problems
Getting Help
