Rockwell Automation 2711E-xxxx PanelView Operator Terminals User Manual - Manual (Page 142)

8–8 Troubleshooting PanelView Terminals
Publication 2711E-821 – January 1998
Problem What to do: Cause
Remote I/O : PLC Communication Lost. Cable disconnected or wired incorrectly.
Terminating resistor problem. Check that cable is securely connected and
cable wiring is correct. Check terminating
resistor.
PLC configured incorrectly. Check PLC configuration and correct if
necessary.
The corresponding I/O Control Inhibit bit to
any PanelView defined I/O racks is set to 1. Reset the corresponding I/O Control Inhibit
bit to zero.
Remote I/O : One or more Listen-Only
racks are faulted. The racks that the terminal is monitoring are
faulted. Check that the device containing the rack
being monitored has been properly
configured at the PLC.
Remote I/O: PLC in Program Mode or a
Configured Rack is Reset. Corresponding I/O Control Reset bit to any
of the PanelView defined I/O racks is set to
1 and the PLC is in Run mode. The
PanelView continues to function normally
including the reset racks. Reset the I/O Control bits to zero.
Ensure the PLC is in Program mode when
performing maintenance operations.
PLC is in Program or Remote Program
mode. Change PLC to Run mode.
Consult the following table to identify PLC communication
problems over the DH+ network. At run time, the ## appears at the
terminal as the station address of the node to which the error applies.
Problem Cause What to do:
DH+## : Access denied to remote station,
improper privilege. The indicated station is a PLC that is
loading a program over the network. Or, on
an SLC 5/04, the memory map tables may
have protection (static or constant). Wait for the transfer to complete or remove
protection.
DH+## : Remote station does not match the
configured PLC. The device type of the remote station does
not match that configured in PanelBuilder. Check that the node definitions in your
application file are configured with the
correct device type.
DH+## : Remote station has not replied within
specified timeout period. Network traffic is too heavy for configured
timeout. Increase the configured timeout for the
indicated station.
Cable problem. Check for a loose connection or damaged
cable at the indicated station.
DH+## : Remote station is in Program mode. PLC is in Program or Remote Program
mode. Change PLC to Run mode.
DH+## : Station address is already in use by
another device. The PanelView terminal cannot
communicate with the indicated station
because the terminal has been configured
with a station address that is already in use
on the DH+ network. Select another station address.
DH+## : Tag address is not valid for this PLC. The terminal is trying to access a tag whose
address does not exist at the indicated PLC. Check that the tag addresses in your PLC
are correct and the PLC has been correctly
configured.
DH+## : Unable to communicate with remote
station. The indicated remote station does not exist
on the DH+ network. Check that the remote station is present and
active at the indicated station address.
Cable problem. Check termination and cable pin
assignment.
PLC Communication
Problems: Data Highway
Plus