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Module Warnings and Errors
Expansion module warnings and errors are logged in the main frame CPU memory to indicate
issues or errors during power-up, restart, run-time, and other modes of CPU operation. If a
warning or error occurs in any one of the RTU frames, the ERR LED will light up on the front
panel of the main CPU and the MERR LEDs will light up on the front panel of all expansion
modules. Green indicates a message, orange indicates a warning, and red indicates an error.
The RTU error logger information can be retrieved using the STS Error Logger utility. For
more details, see the Error Logger section of the ACE3600 STS User Guide.
Connecting the Expansion Module
Install the expansion module in the second slot from the left in the expansion frame.
Direct connection: In a system with a single expansion frame, connect the Exp. Eth1 port on
the expansion module directly to the Eth1 port on the main CPU, using the crossed Ethernet
cable described below.
Switch connection:
•
In an RTU with more than one expansion frame (and up to seven), connect the Exp.
Eth1 port on the expansion module to one of the Ethernet ports Eth2-Eth8 on the
expansion LAN switch (situated on the main frame). Note: The Eth.1 (M) port on the
expansion LAN switch is reserved for connection to the main CPU.
•
If two switches are used (more than seven expansion frames), connect the Exp. Eth1
port on the expansion module to one of the Ethernet ports (Eth3-Eth8) on the first
expansion LAN switch or to one of the Ethernet ports (Eth2-Eth8) on the second
switch. (Connect the Eth2 port on the first switch to the Eth1 (M) port on the second
switch Ethernet LAN, as described in the Expansion LAN Switch chapter below.)
Expansion frames are provided without cables. For connection, use one of the cables listed
below or use any other standard Category 5E shielded (FTP) LAN cable (up to 50m, per cable
length limit.)
Four different Ethernet cables are available for this purpose. Choose the cable length based on
the distance from the main frame to the expansion frame.
•
0.6 meter (Motorola p/n FKN8561A) - This cable is for local connection of the main
CPU to the expansion switch.
•
2 meter (Motorola p/n FKN8562A)
•
3 meter (Motorola p/n FKN8563A)
•
3 meter (Motorola p/n FKN8525A) crossed cable - This cable is for direct connection
of the expansion module to the main CPU.
For more on switch connection, see the Expansion LAN Switch chapter below.
17-7
Expansion Module
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