Rockwell Automation 1794-ASB/E Remote I/O Adapter Module User Manual - Manual (Page 28)

2–10 Installing Your Remote I/O Adapter Module
Publication 1794ĆUM009D-EN-P - April 2004
Communication Rate
You set these switches (S2-3 and S2-4) for the desired
communication rate (in bits/s). Selections are:
57.6k bits/s
115.2k bits/s
230.4k bits/s
Autobaud (used in 32-pt modes)
Processor Restart Lockout (PRL)
When PRL is disabled (switch S2-2 on), the programmable
controller can restart communication with the adapter in the event of
a communication fault.
When PRL is enabled (switch S2-2 off), the programmable controller
cannot restart communication with the adapter in the event of a
communication fault. In this case, you must press the restart
pushbutton on the front of the adapter module to restart
communication.
Hold Last State (HLS)
The hold last state option allows the user to determine what action
the outputs take in the event of a communication error.
When HLS is enabled (S2–1 off), all digital outputs, and 1794-OE4
and 1794-IE4XOE2 analog modules remain in their last state. All
other analog outputs take their configured safe state action
When HLS is disabled (S2–1 on), all digital outputs are reset. All
analog outputs take their configured safe state action
ATTENTION
!
Only 1794-OE4 and 1794-IE4XOE2 analog
modules hold their last state when Hold Last State
is enabled. Refer to the respective module
publications for information about configuring
analog output safe state actions.
The switch assemblies are located under a flip-open cover on the
front of the adapter module.
Reset
Pushbutton