This Release Note describes the changes made for RealFLO version 5.26 Build 2A. This RealFLO release contains flow computer 5.27, which corrects an error that can occur when an MVT write command is sent to a 4202GFC MVT from RealFLO when the flow calculation is running.
The expected availability of RealFLO version 5.26 Build 2A is March 10, 2005.

Software and Hardware Relevant to this Release

RealFLO configuration software current release version is 5.26 build 2A (personal computer application).
Flow Computer software upgrade to version 5.27 (C program resident in all SCADAPacks and 4202GFC controllers when used as flow computers).
Firmware Upgrade (recommended). See below for firmware upgrade guidelines for your controller.

RealFLO Configuration Software Features and Changes

RealFLO version 5.26 application software is unchanged; flow computer 5.27 is included with RealFLO version 5.26 build 2A.

Flow Computer Software Changes

Version 5.27 flow computer files for all target controllers are automatically added to the C:\Program Files\ RealFLO folder when RealFLO Configuration Software 5.26 build 2A is installed.
Note that the new flow computer file must be written to the 4202GFC controller in order to realize the following changes.

1. An error in the flow computer is corrected to ensure writing to 4202GFC MVT's does not affect the flow volume, mass and energy totals. This error would cause a large flow, based on a large flow time, to be recorded at the time of an MVT write command. The error would occur when an MVT write command is sent from RealFLO while the flow calculation is running.

This error affects 4202GFC controllers with firmware version 1.80 and newer when flow computer versions 5.12 through 5.26 are used.

Temporary Workaround

To ensure this error does not occur before you have the opportunity to upgrade the flow computer in your 4202GFC controllers you must stop the flow calculations before writing to the 4202GFC MVT. Use the following procedure to ensure the error does not occur when you need to write a new configuration to your 4202GFC MVT:

• Stop the flow calculations using the Calculation Control command in the RealFLO Flow Computer menu.
• Write any MVT changes using the MVT Configuration command in the RealFLO Flow Computer menu.
• Restart the calculations using the Calculation Control command in the RealFLO Flow Computer menu.

Firmware Version Requirements

Since installation of the new flow computer software will result in removal of all existing flow history in the flow computer, the additional overhead of installing the latest firmware is minimal. It is recommended that the firmware in the target controller be upgraded to the latest version.
The latest version of firmware at the date of this notice is:

• For SCADAPack 32 and SCADAPack 32P target controllers version 1.42.
• For SCADAPack, SCADAPack Plus, SCADAPack Light, SCADAPack LP, Micro16 and 4202GFC the version 2.11.

The firmware for all controllers may be obtained with the latest Firmware Loader application (Firmware Loader Version 1.51 build 1C).

Flow Computer Upgrade Procedure

Note: All flow computer configuration and flow history is lost when the flow computer is upgraded. Follow the steps in the order listed to ensure the configuration and flow history is saved.
If you are planning to upgrade the flow computer in your SCADAPack or 4202GFC controller to take advantage of the features and changes described above, it is recommended that the following steps be used. If you have any questions or concerns regarding this procedure contact Control Microsystems Technical Support using the information in the footer of this document.

1. Obtain RealFLO 5.26 build 2A and Firmware Loader 1.51 build 1C

(You will need both of these to upgrade your Firmware, Flow Computer, and RealFLO Configuration Software.)
Send an email to INFOCenter@controlmicrosystems.com. You will be contacted with the information you need to obtain these releases.

2. Save Current Configuration and History from Flow Computer

If you have a RealFLO Configuration File:

• Open RealFLO and open your current RealFLO configuration file.
• Establish a serial or Ethernet connection with the target controller.
• From the RealFLO Flow Computer menu select Setup.
• In the Flow Computer Configuration section of the Setup dialog check the selection for Controller Configuration, Flow Run Configuration, MVT Configuration and Process I/O Configuration and click the Read button. Then click the OK button to close the dialog.
• From the RealFLO Flow Computer menu select Read Logs/History. In the Read Logs/ History dialog select each of the available items by clicking your mouse on the white box beside each item.
• Click the OK button to read the Logs/History from the Flow Computer.
• Save the RealFLO file by selecting Save from the File menu. This will save the current configuration, the alarm and event logs and the hourly and daily flow totals.

If you do not have a RealFLO Configuration File:

• Open RealFLO and select New from the File menu.
• Establish a serial or Ethernet connection with the target controller.
• From the RealFLO Flow Computer menu select Controller Configuration and then select Controller type. Select the controller type you connected to.
• From the RealFLO Flow Computer menu select Setup.
• In the Flow Runs section of the Setup dialog click the Read button.
• In the Flow Computer Configuration section of the Setup dialog check the selection for Controller Configuration, Flow Run Configuration, MVT Configuration and Process I/O Configuration and click the Read button. Then click the OK button to close the dialog.
• From the RealFLO Flow Computer menu select Read Logs/History. In the Read Logs/ History dialog select each of the available items by clicking your mouse on the white box beside each item.
• Click the OK button to read the Logs/History from the Flow Computer.
• Save the RealFLO file by selecting Save from the File menu. This will save the current configuration, the alarm and event logs and the hourly and daily flow totals.

3. Install New Firmware in target controller

• Open the Firmware Loader and establish a serial or Ethernet connection with the target controller.
• Click the Update Firmware button and select C:\Program Files \ Firmware Loader \ Firmware in the Look in: entry box.
• Select the firmware file, appropriate for the controller you are using, and with the version listed above and then click the OK button.
• Read the Confirm Update dialog to ensure you are loading the desired firmware and then click the Yes button to complete the firmware installation.

4. Install New Flow Computer in target controller

• Open the RealFLO configuration file that was saved in the first step above.
• Select Setup from the Flow Computer menu.
• In the Flow Computer Program section of the Flow Computer Setup dialog select Flow Computer or Flow Computer with Enron Modbus and then check the Run Program after writing box. Then click the Write button.
• If you saved the flow computer files to a different folder than the folder suggested during the RealFLO installation you can use the Custom Flow Computer or C/C++ Program and browse to the folder you saved the files. Select the flow computer file and check the Run Program after writing box. Then click the Write button.

5. Re-Load Configuration file to flow computer

• Open the RealFLO configuration file that was saved in the first step above.
• Select Setup from the Flow Computer menu.
• In the Flow Runs section of the Flow Computer Setup ensure the Number of Runs and the Flow Computer ID boxes contain the correct information and click the Write button.
• In the Flow Computer Configuration section of the Flow Computer Setup dialog check the Controller Configuration and Flow Run Configuration boxes. In addition to these two boxes if you are using MVT's check the MVT Configuration box and if you are using process I/O check the Process I/O Configuration box. Then click the Write button.
  
• Click the OK button in the Flow Computer Setup dialog to close the dialog.
• Select Real Time Clock from the Flow Computer menu. In the Real Time Clock Setting dialog set the controller time using the PC time or an entered time.
• From the Flow Computer menu select the Calculation Control command and start the calculations for each meter run.
• To monitor the current flow calculation readings select the Update Readings command from the Flow Computer menu.