Rockwell Automation MD65 Profibus Communication Card - Manual (Page 34)

4-6 PROFIBUS Communications Module
4.6 Setting a Fault Action
By default, when communications are disrupted (for example, a
cable is disconnected) or the master is idle, the drive responds by
faulting if it is using I/O from the network. You can configure a
different response to communication disruptions using Comm Flt
Action (parameter 9) and a different response to an idle scanner
using Idle Flt Action (parameter 10).
4.6.1 Changing the Fault Action
Set the values of Comm Flt Action (parameter 9) and Idle Flt Action
(parameter 10) to the desired responses as shown in table 4.3.
!
ATTENTION: Comm Flt Action (parameter 9) and
Idle Flt Action (parameter 10) let you determine the
action of the module and connected drive if
communications are disrupted or the scanner is idle.
By default, these parameters fault the drive. You can
set these parameters so that the drive continues to
run. Precautions should be taken to ensure that the
settings of these parameters do not create a risk of
injury or equipment damage.
Table 4.3 – Selections for Drive Response to Communication Fault
Value Action Description
0 Fault (default) The drive is faulted and stopped (Default).
1 Stop The drive is stopped, but not faulted.
2 Zero Data The drive is sent 0 for output data after a
communications disruption. This does not
command a stop.
3 Hold Last The drive continues in its present state after a
communications disruption.
4 Send Flt Cfg The drive is sent the data that you set in the
fault configuration parameters 13 and 14 (Flt
Cfg Logic and Flt Cfg Ref).
Figure 4.3 – Fault Action Screens on an LCD OIM
Comm Flt Action
Parameter: # 009
Fault 0
VALUE LIMITS SEL X
Idle Flt Action
Parameter: # 010
Fault 0
VALUE LIMITS SEL X