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ROC364 Instruction Manual
2-15
Master Controller Unit, I/O Module Rack, and Wiring
Rev Jun/05
5.
Remove
the
battery
located at B1 on the top right of the MCU.
6.
Measure
the
voltage
of the terminals of the removed battery.
7.
If the voltage reading is less than 3.6 volts, the battery must be replaced. Refer to Section 2.5.11,
Replacing the Battery, on page 2-18.
If the battery in soldered-in, replacement requires the removal of the MCU board from the housing, and
then the MCU assembly should be returned to your local sales representative for this action. Refer to
Section 2.5.12, Removing and Replacing the MCU Assembly, on page 2-19.
2.5.5 Verifying the ROC can Communicate with the PC
Equipment Required:
Personal computer with ROCLINK configuration software installed
To verify that the ROC is communicating with the PC running ROCLINK configuration software:
1.
Connect
the ROC to the PC and launch ROCLINK configuration software.
2.
If the ROC is communicating with ROCLINK configuration software,
COM1
,
COM2
,
COM3
,
or
COM4
displays in the lower right corner of the screen.
2.5.6 Verifying RAM
Equipment Required:
Personal computer with ROCLINK configuration software installed.
To detect bad RAM:
1.
Connect
the ROC to ROCLINK configuration software.
2.
Select ROC > Information >
Other Information
tab and verify that RAM Installed is labeled
PRESENT
.
The problem could be a bad backup battery or a bad solder joint of the RAM chip.
2.5.7 Performing a Warm Start
A Warm Start temporarily suspends all input/output (I/O) scanning. I/O processes are restarted from
their last calculated values. A Warm Start clears and restarts all user-enabled flags. A Warm Start also
starts all FSTs to the first instruction.
NOTE:
If your ROC is semi-functional, refer to Section 2.5.2, RAM Backup Procedure, on page
2-13
before
removing power from your ROC.
To perform a Warm Start using the configuration software:
1.
Connect the ROC to the PC running ROCLINK configuration software.
2.
Click ROC > Flags > Warm Start and click Apply.
To perform a Warm Start using the power option:
1.
Remove power from your ROC.
2.
Reapply power to the ROC.