Rockwell Automation 1752-L24BBBE SmartGuard 600 Controllers User Manual - Manual (Page 79)

Rockwell Automation Publication 1752-UM001E-EN-P - June 2014 79
Configure Your Controller for DeviceNet Communication Chapter 7
Single Channel versus Dual-channel Equivalent or Dual-channel Complementary
You can configure distributed I/O modules inputs for either Single- or Dual-
channel mode. This tells the Guard I/O module whether to view the inputs
individually (single-channel) or as input pairs (dual-channel). Dual-channel
inputs may be configured as equivalent, where both inputs should always be the
same or as complementary, where both inputs should always be opposite.
If configured as dual-channel, the Guard I/O module will always send the
channel data to the SmartGuard controller as both channels LO or both channels
HI. This means that the Inputs Inconsistent fault on the SmartGuard instruction
will never occur.
If you want the SmartGuard instruction to perform the diagnostics of the safety
input on the Guard I/O modules, configure the Guard I/O modules as a single
channel. This will allow you to use the fault indicators provided by the
SmartGuard instructions in your program, which is what we recommend.
If you want to perform the diagnostics of the safety input on the Guard I/O
module with the module status indicators and status bits and not by using the
SmartGuard instruction diagnostics, configure the Guard I/O module as dual-
channel complementary or equivalent.
Standard Input and Output Parameters
1791DS modules shown here support standard data as well as safety data.
Configure standard input and output parameters by using the Parameters tab on
the Module Properties dialog box.
TIP Other devices may have different configuration options. Consult the user
manual for your device for more information.