Rockwell Automation 57C329 Remote I/O Communications, AutoMax - Manual (Page 87)

6Ć3
switches, you must cycle power to the rack (or reset the
module using the self test function) in order for the new
settings to be recorded in register 12.
Note: Use steps 2 through 8 if you have a coaxial cable
network. If you have a fiberĆoptic network, see section
K3.1.
Step 2. Verify that the network connections to each module are
secure. Check the drop cable connection at the module
faceplate and at the passive tap. Verify that the coax cable
connections are secure.
Step 3. Verify that the coaxial cable is terminated correctly. There
must be a line terminating load at each end of the
network.
Step 4. Verify that the coaxial cable system was installed correctly.
Refer to section 3.3 for additional information.
Step 5. Verify the integrity of the coaxial cable system. Refer to
section 3.9 for additional information.
6.4 The Shark Interface Module's CPU OK LED
is Off
Problem: The green CPUOK status LED on the Shark Interface
module's faceplate is off. This LED should be on when the module
has passed its powerĆup diagnostics. If the green status LED is off, a
local watchdog failure has occurred. First, try cycling power to the
rack. If the CPUOK status LED remains off, replace the module.
6.5 The Shark Interface Module's
COM OK LED is Blinking
Problem: The green COM OK status LED on the Shark Interface
module's faceplate is blinking. This LED should be on when the
module is communicating over the Remote I/O network. The LED
should be off when the module is not communicating over the
network. If the green status LED is blinking, an invalid drop number
has been selected on the 16Ćposition rotary switch on the module's
faceplate. Set the rotary switch to the proper position and cycle
power to the rack. The rotary switch drop number settings are:
D 1 to 7 for racks containing both analog and digital modules
D 9 to F for racks containing all digital modules.