I/O Modules
5-10
Note: The hot-swap of an I/O module in the expansion frame of an RTU which is running
without a configuration from the STS (i.e. running the default configuration as from the
factory) will not be successful in the following situation: If the expansion module restarts
while the main CPU is running and during this restart, a I/O module is removed. In such a
case, when the expansion module powers up, it will not recognize the removed I/O module and
will not report the hot-swap to the main CPU when the I/O module is replaced in the slot.
Automatic Module ID
Each I/O module has a unique module type ID number. When the RTU is powered up or when
an I/O module is inserted into a slot (hot-swap), the CPU automatically identifies the module
type.
The module ID can be viewed from the STS Hardware Test utility. For more information, see
the Hardware Test section of the ACE STS User Guide.
24V DC Floating Plug-In Power Supply
Up to two 24V DC floating plug-in power supplies can be added to certain I/O modules, as
detailed in the table below. Up to four 24V DC floating plug-in power supplies can be added
per power supply module. (For guidelines on remaining within the maximum system power
consumption, see Appendix D: ACE3600 Maximum Power Ratings below.)
Table 5-1 Number of Plug-In Power Supplies in ACE3600 I/O Modules
Module Type Number of Power
Supplies
32 DI Fast 24V/IEC TYPE 2 2
16 DI Fast 24V/IEC TYPE 2 1
16 AI 1
8 AI 1
Mixed I/O 1
Mixed Analog 1
The plug-in power supply is ordered separately.
Before installing the 24V DC floating plug-in power supply card on the I/O module, please
verify that the FPGA version of the I/O module is as follows:
I/O Module Type FPGA Version
AI module (all types) Version 1.5.002 or higher.
DI module (all types) Version 2.1.004 or higher.
Mixed I/O module (all types) Version 1.5.004 or higher.
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