Module Firmware And Operation Modes - Motorola ACE3600 RTU Owner's Manual

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Exp Eth1 (E1) - 10/100BaseT Ethernet port, used to connect to the expansion LAN
switch or to the main CPU
•
STS 1 (STS1) – RS232 port 115200 bps, used to connect a PC running the ACE3600
STS to perform diagnostics and other STS operations (for distributed I/O), as if it is
connected directly to the main CPU (i.e. it provides access to the whole system.)
For the detailed specifications of each port, see the Expansion Module Specifications below.
For information on the cables and connectors, see Connecting the Expansion Module below
and Appendix C.
Note: When connecting an Ethernet cable to the main CPU, add one Fair-Rite ferrite core
(#7683477X01 from the supplied ferrite kit FHN7007A) on each end of the cable, near the
connectors. Each core has two turns. When connecting an Ethernet cable to the expansion
module, add one Fair-Rite ferrite core (#7683477X01 from the supplied ferrite kit FHN7007A)
on each end of the cable, near the connectors. Each core has two turns. (The number of turns
when using ferrite cores is determined by the times the cable/wire crosses the internal aperture
of the core.)
LEDs
The expansion modules include module status LEDs, port status LEDs, and expansion address
LEDs. Some of the LEDs are single color (green) and some are bicolor LEDs (red, green or
orange).
Status LEDS indicate the expansion module status in startup (boot), run-time or when there is
a failure. The communication LEDs are used to indicate the communication port status. The
expansion address LEDs indicate the address selected with the rotary frame number selector
switch, as detected during startup. Note that during startup or failure, the communication and
expansion address (EXP ADDR) LEDs are used to indicate various situations. Table 17-1
details the LEDs functionality.

Module Firmware and Operation Modes

The expansion module firmware extends the main CPU control to the I/O modules located in
the expansion frame. The expansion module (expansion CPU) is shipped from the factory
with dedicated firmware called Expansion Loader. After connecting to the main CPU
(MCPU), the expansion module loads the Expansion Firmware Image from the main CPU to
ensure that all modules use the same firmware version. The diagram below depicts the
initiation process of an expansion module after power-up/restart and during run-time:
17-3
Expansion Module