8. Menu 75 Parameters
ALSPA PROFIBUS Field Bus Coupler
Page 8-10
Technical Manual
(09/06)
parameter, the data is clamped to the maximum or minimum value.
Bit parameter values outside the normal range are ignored.
For example if the following information was viewed:
P75.44 = 0300H (= 0000 0011 0000 0000 binary)
P75.45 = 21
This indicates that one of the monitor parameters configured
attempted to read from a non-existent parameter, and another
parameter attempted to read a parameter that did not have Fieldbus
read access. The error counter indicates that a total of 21 errors
had occurred since the last PROFIBUS configuration.
Note:
Entering a zero as a monitor parameter to be read or
written will not produce an error.
8.5.15
Communications Status P75.46
This parameter displays one of the values shown in Table
7-1,depending upon the state of the PROFIBUS board interface.
Table 8-6 Communications status
Value
State
Meaning
0 On-line
The PROFIBUS board is
communicating correctly.
1 Not
configured
The PROFIBUS board has not yet
been configured with a valid node
address.
2
Network not found
The PROFIBUS board has been
configured, but no network messages
have been detected.
3 Not
communicating
The PROFIBUS board has been
configured, the network Baud rate
deduced from the presence of traffic,
but either this slave address is not
being polled from the master, or the
PROFIBUS board does not support
the type of data packet the master is
configured for.
