Manual VIPA System 300V
Chapter 4 Deployment CP 343-2P ASI
HB130E - CP - RE_343-2AH10 - Rev. 08/41
4-17
Troubleshooting and error behavior
Using the
automatic address programming
function, failed respectively
defective AS-i slaves may be exchanged.
Please regard that
automatic address programming
is only possible when
the CP is in the
protected mode
and only one AS-i slave has failed.
In the following there is explained how to replace failed AS-i slaves using
the
automatic address programming
function.
If the "AUP"-LED is lit, this indicates exactly one AS-i slave is failed and
may be changed by means of the automatic address programming.
You can recognize the failed AS-i slave on the slave display. The assigned
LED flashes on the front panel.
Replace the defective AS-i slave with an identical AS-i slave with address 0
(default address).
After replacement the AS-i-Slave is programmed with the address of the
original station that had failed. The "AUP"-LED goes off and the new slave
is indicated by the slave display.
At the following conditions the CP supplies the value 7FFFh in the input
direction (read record set):
•
The AS-i slave does not exist, has failed or is not an analog slave
complying with profile 7.3 respectively 7.4.
•
The channel number is not supported by the analog salve.
•
The analog slave signals "value invalid".
At the following conditions the CP supplies the value 0h in the input
direction (read record set) when the analog slave delivers transparent data
complying with profile 7.3 (ext. ID2 code, Bit 2=1):
•
The analog slave has failed.
•
The analog salve signals "value invalid".
In the output direction (write record set) the CP behaves as follows:
In the STOP Mode of the CPU the CP interrupts the transfer of the analog
output values. Here the reaction of the analog slave depends on the
particular device.
When the CP starts-up, all analog output values have the value 7FFFh.
This value is, however, only sent by the CP after the first data record
transfer for the relevant analog slaves.
Overview
Detect defective
AS-i slave
Replace defective
AS-i slave
Error display at
analog value
transfer
