PNC001-Ax Reset or Power
Supply Fault with PSA140
These issues may occur in a system with a PNC001-Ax module and two
IC695PSA140 Multifunctional 120/240 VAC, 125VDC 40W Power Supplies when either
of the power supplies are turned off and back on:
1.
The PNC001-Ax resets and does not power back on.
2.
The P/S Fault LED on PSA140 that was not powered off and back on turns on
and no power is supplied to the modules in the RX3i rack.
If this issue occurs, it may be resolved by turning both power supplies off and back
on. This issue only applies to the PNC001-Ax.
Monitoring Remote IO Device
Availability
Applications using PROFINET IO should monitor the availability of remote IO
devices and take appropriate action if the device becomes unavailable due to a
network connectivity issue, power failure at the remote device, etc. PROFINET IO
device status is available by monitoring the Controller’s All Devices Connected status
bit, using the PNIO_DEV_COMM function block, or monitoring the CPU’s
IO Fault Table for Loss of Device faults.
Individual IO modules within a PROFINET IO device should also be monitored so
that appropriate action may be taken if the IO module becomes unavailable. The
status of input modules may be monitored by enabling point faults and
monitoring the fault contact within the application. Outputs may be monitored by
looping critical points to an input module and verifying the output value.
Loss / Add of IO Device during
dual power up
If both IO Controllers of a PNSR system are powered up at the same time and
attempt to connect to redundant PROFINET IO devices at the same time, the
second of the two connection attempts will be rejected until the first connection
completes. This rejection will cause a Loss of IO Device fault. When the retry is
attempted, it will succeed, and an Addition of IO Device fault will be issued. This is
an expected operation. If one system is powered on slightly before the other, this
condition does not occur.
To Next Page
Loading...
Need help?
General
