ROC364 Instruction Manual
3-29
Input and Output Modules
Rev Jun/05
For example, if you have AI modules installed in slots A7, A10, and A11, adding another AI module in
slot A8 changes the point numbers of the Analog Inputs for modules in slots A10 and A11.
If one or more FSTs, or higher level points, such as a PID loop or AGA Flow, have been
configured in the ROC, be sure to reconfigure them according to the changes in I/O modules.
Operational problems will occur if you do not reconfigure the ROC.
3.6.2 Removing and Installing an I/O Module
Use the following procedure to remove/install an I/O module with the ROC power off. The procedure is
performed using ROCLINK configuration software.
There is a possibility of losing the ROC configuration and historical data held in RAM while
performing the following procedure. As a precaution, save the current configuration and
historical data to permanent memory as instructed in Section 2, Troubleshooting and Repair.
Change components only in an area known to be non-hazardous.
Failure to exercise proper electrostatic discharge precautions (such as wearing a grounded wrist
strap) may reset the processor or damage electronic components, resulting in interrupted
operations.
During this procedure all power will be removed from the ROC and devices powered by the ROC.
Ensure that all connected input devices, output devices, and processes remain in a safe state when
power is removed from the ROC and when power is restored to the ROC.
1.
Perform a RAM backup as in Section 2, Troubleshooting and Repair.
2.
Disconnect the input power by unplugging the 5-terminal connector.
3.
Perform one of the following steps, depending on whether the module is to be removed or
installed:
♦
If removing the module, loosen the module retaining screw and remove the module by lifting
straight up. It may be necessary to rock the module gently while lifting.
♦
If installing the module, insert the module pins into the module socket. Press the module
firmly in place. Tighten the module retaining screw. Refer to Section 3.6.1, Impact on I/O
Point Configuration, on page 3-28.
4.
After the module is removed/installed, reconnect the input power.
5.
Check the configuration data, ROC Displays, and FSTs, and load or modify them as required.
Load and start any user programs as needed.
6.
If you changed the configuration, save the current configuration data to memory by selecting
ROC > Flags > Write to EEPROM or Flash Memory Save Configuration as instructed in the
applicable ROCLINK configuration software user manual.