Rockwell Automation 20-750-DNET PowerFlex DeviceNet Option Module - Manual (Page 31)

Rockwell Automation Publication 750COM-UM002B-EN-P - October 2012 31
Configuring the Option Module Chapter 3
Setting a Fault Action By default, when communication is disrupted (for example, the network cable is
disconnected), the controller is idle (in program mode or faulted), or explicit
messaging for drive control is disrupted, the drive responds by faulting if it is using
I/O from the network. You can configure a different response to these faults:
• Disrupted I/O communication by using
Host Parameter 33 - [Comm Flt
Action] .
• An idle controller by using
Host Parameter 34 - [Idle Flt Action].
• Disrupted explicit messaging for drive control via PCCC or the CIP
Register Object by using
Host Parameter 36 - [Msg Flt Action].
Changing the Fault Action
Set the values of
Host Parameters 33 - [Comm Flt Action], 34 - [Idle Flt
Action] , and 36 - [Msg Flt Action] to an action that meets your application
requirements.
Figure 5 - Edit Fault Action HIM Screens
Changes to these parameters take effect immediately. A reset is not required.
If communication is disrupted and then is re-established, the drive will
automatically receive commands over the network again.
ATTENTION: Risk of injury or equipment damage exists. Host Parameters 33 -
[Comm Flt Action], 34 - [Idle Flt Action], and 36 - [Msg Flt Action] let you
determine the action of the option module and connected drive if communication
is disrupted, the controller is idle, or explicit messaging for drive control is
disrupted. By default, these parameters fault the drive. You may configure these
parameters so that the drive continues to run, however, precautions should be
taken to verify that the settings of these parameters do not create a risk of injury or
equipment damage. When commissioning the drive, verify that your system
responds correctly to various situations (for example, a disconnected network
cable, controller in idle state, or explicit message control disruption).
Value Action Description
0 Fault The drive is faulted and stopped. (Default)
1 Stop The drive is stopped, but not faulted.
2 Zero Data The drive is sent ‘0’ values for data. This does not command a stop.
3 Hold Last The drive continues in its present state.
4 Send Flt Cfg The drive is sent the data that you set in the fault configuration parameters (Host
Parameters 37 - [Flt Cfg Logic], 38 - [Flt Cfg Ref], and 39 - [Flt Cfg DL 01] through
54 - [Flt Cfg DL 16]).
ESC ENTER
Stopped
0.00 Hz
AUTO
F
▲ ▼
Edit Comm Flt Action
Fault 0
0 << 4
ESC ENTER
Stopped
0.00 Hz
AUTO
F
▲ ▼
Edit Idle Flt Action
Fault 0
0 << 4
ESC ENTER
Stopped
0.00 Hz
AUTO
F
▲ ▼
Edit Msg Flt Action
Fault 0
0 << 4