Rockwell Automation 1747-SDN SLC 500 DeviceNet Scanner Module User Manual - Manual (Page 139)

Publication 1747-UM655B-EN-P - June 2007
Data Organization 139
Command Register Bits
Command Word 0:S.0 Operating Mode Description
Bit Operating Mode
0 1 = Run mode
0 = Idle mode Run
The module maps output data from its scanner output table (M0) and discrete outputs to each device on
the network. Inputs are received and mapped into the scanner input table (M1) and discrete inputs.
Outputs on the network are under SLC program control.
Idle
The scanner does not map output data to the devices, but keeps network connections to devices open so
device failures can be detected. Input data is returned from devices, and mapped into the scanner input
table (M1) and the discrete inputs. Outputs on the network are not under program control and will be in
their configured idle state. The scanner is put into this mode to perform online configuration of the
scanner database tables.
1 1 = fault network Fault Network
The scanner stops communicating with devices on the network. No outputs or inputs are mapped. Outputs
on the network are not under program control.
If scanner was in Run mode, devices will go to their fault state.
2 1 = restore to
factory
defaults/flush
memory Restore to Factory Defaults/Flush Memory
The scanner may receive a scanlist or configuration that causes inappropriate scanner behavior. It may be
necessary to restore to the module’s factory defaults to recover from this state. This procedure is
described below.
3
Reserved
(1)
4 1 = disable
network Disable Network
The DeviceNet channel is disabled for communication. No communication may occur over this channel.
Outputs on the network are not under program control.
If scanner was in Run mode, devices will go to their fault state.
5
Reserved
(1)
6 1 = halt scanner Halt Scanner
All scanner operations stop when this command is issued. No communication occur over either DeviceNet
port. No M-file or discrete I/O mapping occurs. Outputs on the network are not under program control. If
scanner was in Run mode, devices will go to their fault state.
7 1 = reboot Reboot
This command causes the scanner to reset as though power had been cycled. When this command is
issued, all scanner communication stops for the duration of the scanner’s initialization sequence. Outputs
on the network are no longer under program control. If scanner was in Run mode, devices will go to their
fault state.
8…15
Reserved
(1)
(1) All reserve bits must be set to zero or improper operation may result.