Expansion Module
17-10
Pushbutton Functionality
In general, the two pushbuttons on the front panel of the expansion module behave like the
pushbuttons on the front panel of the CPU module, with the exception of the Erase User Flash
functionality and user application access which are not available.
Note: PB2 is not relevant during run time in the expansion module.
Scenario Trigger Action
LEDs Test During run-time, press PB1
for five or more consecutive
seconds (but less than 30).
All the LEDS on the expansion module
and I/O modules on that expansion frame
will be lit until let go of PB1 and then
returned to their previous states.
Turn LEDs ON During run-time, press PB1
for one second.
Those LEDs which are currently active
will be turned on for a period of time
(configured in the RTU configuration
using the STS.)
Bootstrap During startup, press PB2
continuously for five
seconds.
Note: Before initiating
bootstrap, the expansion
module must be connected
directly to the STS PC in
standalone mode. No other
components can be on the
network which might create
a conflict with the default IP
address.
The expansion will start up in diagnostic
mode. Communication with the RTU is
for diagnostic purposes only (Error
Logger/ SW Diagnostics) or for
downloading new primary image firmware
to the module. (See Module Firmware and
Operation Modes below.)
If the bootstrap fails, the four indicator
LEDs (see LEDs Location in Table 17-2)
will display the failure error in binary
code.
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