ProSoft Technology 5104-DNPS-PDPM - Manual (Page 37)

PDPM ♦ ProLinx Gateway Configuration
PROFIBUS DP Master Protocol Manual
ProSoft Technology, Inc. Page 37 of 70
June 24, 2013
This bit is automatically set by the master if this slave is not responding on
the bus. If this error occurs, compare the configured station address with the
physical one of the slave. Then ensure that the slave module supports the
configured baud rate. Some old modules only support bps rates up to 1.5
Mbps. Other modules must be jumpered to DP-Norm behavior first, to be
operative with a DP-Norm master. Then check your bus cable. Only the
TX/RX-pins 3<->3 and 8<->8 must be connected to get the contact between
two PROFIBUS components.
 Slave_Deactivated
This bit is automatically set by the master if the slave in its parameter set is
marked as inactive, in order to be taken out of cyclic I/O processing.
 Sync_Mode
This bit is set by the slave when it has received the sync control command.
 Freeze_Mode
This bit is set by the slave when is has received the freeze control command.
 Watchdog_ON
This bit is set by the DP-slave when its watchdog control is active to
supervise its corresponding master connection.
 Static_Diag
The slave sets this bit to indicate that the master system is not operative for
I/O due to a general error. In a case of a set static diagnostic bit, the master
has to collect diagnostic information as long as this bit is active. On which
events or at what time this bit can be set by a slave device is not defined in
the norm description.
 Parameter_Req_used
The slave sets this bit to force the master system to do a new
parameterization. This bit is set as long as new parameterization must be
performed.
 Ext_Diag_Overflow
This bit is set if there is more extended diagnostic information to report to the
master than can be given to the master in one DP-diagnostic telegram. The
DP-slave sets this bit, for example, if there is more diagnostic channel
information than the slave can hold down in its diagnostic buffer.
 Assigned_Master_Address
In this octet, the address of the DP-master that has done the
parameterization of the slave is entered. If the DP-slave is not parameterized
from any DP-master, the DP-slave puts the address 255 dec here.
 Real_Ident_Number
With the Ident_Number, the slave reports its own unchangeable identification
number that was assigned by the PROFIBUS user organization. This
identification code can serve in PROLINX SyCon to compare it with the Ident
code of the GSD file of the configured slave if a parameterization error is
reported.