FC225 S5 must be 1 for FC228 [ERROR 311]

FC225 S5 must be 1 for FC228 [ERROR 311]

FC225 Module 1,27,02 Block 1196 is part of a chain controlled by an FC228 FDD block, so S5(=0) must be 1

This FC225 IOC/DOUT is in an FDD chain (FC228). S5 must be 1 for exception reporting to work with older firmware.

The Harmony Function Code Manual says:

(Readback enable) The output channels can have optional readback hardware present. This specification must match the hardware configuration with respect to whether this option is enabled.
0 = disable readback
1 = enable readback
This option must always be enabled for foreign device definition (function code 228) channels.
PDP800, CI850, and CI800: Not used

From the client informing us of this problem:

Basically, exception reporting doesn’t work. So, if you were historizing or using the tags in a console (graphics) you won’t be able to get the actual state changes.

Further investigation indicates that the problem affects only the value displayed or fed into subsequent logic. Also, the problem is eliminated (as is the need for S5=1) if the BRC firmware is level M5 or above and the Gateway (S800 IO FC 227) is at least G5. If this is the case, there is no problem. ABB Case ABB20161007E0252 covers the details. It is not known if ABB clients were directly informed of this problem.

If the firmware revisions are not as indicated, the problem can exist.

This message is likely to show an error in the system configuration. It should be reviewed. The issue raised may be in unused logic or graphics, or have other realities that make it a non-issue.

Please contact us for help resolving your error messages.