Branch-Specific Diagnostics

Model Reference Manual

Data Consistency Checking : Diagnostic Messages from Data Consistency Checks : Branch-Specific Diagnostics

The following diagnostics apply only to the Head of a Branch:

The Head reference should only be unset (i.e. null) if the Head Connection Type HCONN is set to OPEN, VENT, CLOS or DRAN.

A 20 HEAD REFERENCE POINTS TO NONEXISTENT ELEMENT

This error would result from the deletion of a component, such as a Nozzle, to which the Head of the Branch was originally connected.

A 30 BAD HEAD RETURN REFERENCE

The Head is connected to an element that does not refer back to the Branch. This can occur when the Head of a Branch is connected to another Branch, implying that a Tee should be placed somewhere along the second Branch. The error can also occur when two or more branches are inadvertently connected to the same terminal.

A100 HEAD TERMINAL PROBLEM WITH SPREF

Either the Head terminal has an unset SPREF or the SPREF points to a non-existent SPCOM.

A110 HEAD TERMINAL PROBLEM WITH CATREF

Either the Head terminal has an unset CATREF or the CATREF points to a non-existent Catalogue component.

A120 HEAD TERMINAL PROBLEM IN ACCESSING P-POINTS

There is a Catalogue problem in accessing the p-points of the Head terminal.

A130 HEAD TERMINAL PROBLEM, P-POINT NO.n DOES NOT EXIST

A required p-point of the Head terminal does not exist in the set of p-points.

A140 HEAD TERMINAL PROBLEM INVALID FLOW ATTRIBUTE ON CONNECTED BRANCH

This is testing for flow with Branch to Branch connections. Branches have a FLOW attribute which can be set to FORW or BACK or NUL. If FLOW is not set correctly this results in an error

A150 HEAD TERMINAL PROBLEM, TERMINAL INCONSISTENT FLOW ACROSS BRANCH CONNECTION

The FORW flow means that the fluid in the Branch goes from Head to Tail with the reverse for BACK. The code then checks that the fluid flows correctly from one Branch to the next. To fix the problem check the network to see that all the flows are in the correct direction.

A200 DIRECTION HDIR NOT SAME AS TERMINAL DIRECTION

If the Head is connected to a terminal, such as a Nozzle or Tee, then the direction HDIR should always be identical to that of the appropriate p-point of the terminal.

A210 POSITION HPOS NOT SAME AS TERMINAL POSITION

If the Head is connected to a terminal, such as a Nozzle or Tee, then the position HPOS should always be identical to that of the appropriate p-point of the terminal.

A220 HBORE NOT SAME AS TERMINAL BORE

If the Head is connected to a terminal, such as a Nozzle or Tee, then the bore HBORE should always be identical to that of the appropriate p-point of the terminal.

A230 CONNECTION TYPE HCONN NOT SAME AS TERMINAL CONNECTION TYPE

If the Head is connected to a terminal, such as a Nozzle or Tee, then the connection type HCONN should always be identical to that of the appropriate p-point of the terminal.

A300 REFERENCE HSTUBE UNSET

There is more than 1mm of tube between the Head and the p-arrive of the first Component (or the Tail), but HSTUBE is unset.

A310 REFERENCE HSTUBE REFERS TO A NONEXISTENT SPCOM

This may occur if part of the Specification has been deleted.

A320 HSTUBE PROBLEM, CATREF IN SPCOM IS UNSET

This indicates an error in the Specification.

A330 HSTUBE PROBLEM, CATREF IN THE SPCOM REFERS TO NONEXISTENT Catalogue COMPONENT

This may occur if part of the Catalogue has been deleted or if the CATREF is unset.

A340 HSTUBE PROBLEM, GTYPE OF CATALOGUE COMPONENT IS NOT SET TO TUBE

The component pointed to by HSTUBE is not of type TUBE in the Catalogue.

A350 HSTUBE PROBLEM IN ACCESSING P-POINT

There is a Catalogue problem in accessing a p-point of the tube pointed to by HSTUBE.

A400 HBORE NOT SAME AS BORE OF HSTUBE

The bore of any tube leading from the Head, determined from the Catalogue, should always be identical to HBORE.

A410 HCONN NOT COMPATIBLE WITH CONNECTION TYPE OF HSTUBE

The connection type of any tube leading from the Head, determined from the Catalogue, should be compatible with HCONN.

A420 ISPEC REFERENCE POINTS TO NONEXISTENT ELEMENT

This error would occur if, for example, the Insulation Specification pointed to by ISPEC had been deleted.

A430 INSULATION CANNOT BE SELECTED USING HBORE

There is no suitable insulation in the Catalogue for the combination of temperature TEMP and bore HBORE.

Branch Tail Errors

The following diagnostics apply only to the Tail of a Branch:

B 10 TAIL REFERENCE NOT SET

The Tail reference should only be unset (i.e. zero) if the Tail connection type TCONN is set to OPEN, VENT, CLOS or DRAN.

B 20 TAIL REFERENCE POINTS TO NONEXISTENT ELEMENT

This error would result from the deletion of a component, such as a Nozzle, to which the Tail of the Branch was originally connected.

B 30 BAD TAIL RETURN REFERENCE

The Tail is connected to an element that does not refer back to the Branch. This can occur when the Tail of a Branch is connected to another Branch, implying that a Tee should be placed somewhere along the second Branch. The error can also occur when two or more branches are inadvertently connected to the same terminal.

B100 TAIL TERMINAL PROBLEM WITH SPREF

Either the Tail terminal has an unset SPREF or the SPREF points to a non-existent SPCOM.

B110 TAIL TERMINAL PROBLEM WITH CATREF

Either the Tail terminal has an unset CATREF or the CATREF points to a non-existent Catalogue component.

B120 TAIL TERMINAL PROBLEM IN ACCESSING P-POINTS

There is a Catalogue problem in accessing the Tail p-points.

B130 TAIL TERMINAL PROBLEM, P-POINT NO.n DOES NOT EXIST

A required p-point of the Tail terminal does not exist.

B140 TAIL TERMINAL PROBLEM INVALID FLOW ATTRIBUTE ON CONNECTED BRANCH

This is testing for flow with Branch to Branch connections. Branches have a FLOW attribute which can be set to FORW or BACK or NUL. If FLOW is not set correctly, this results in an error

B150 TAIL TERMINAL PROBLEM, TERMINAL INCONSISTENT FLOW ACROSS BRANCH CONNECTION'

B200 DIRECTION TDIR NOT SAME AS TERMINAL DIRECTION

If the Tail is connected to a terminal, such as a Nozzle or Tee, then the direction TDIR should always be identical to that of the appropriate p-point of the terminal.

B210 POSITION TPOS NOT SAME AS TERMINAL POSITION

If the Tail is connected to a terminal, such as a Nozzle or Tee, then the position TPOS should always be identical to that of the appropriate p-point of the terminal.

B220 TBORE NOT SAME AS TERMINAL BORE

If the Tail is connected to a terminal, such as a Nozzle or Tee, then the bore TBORE should always be identical to that of the appropriate p-point of the terminal.

B230 CONNECTION TYPE TCONN NOT SAME AS TERMINAL CONNECTION TYPE

If the Tail is connected to a terminal, such as a Nozzle or Tee, then the connection type TCONN should always be identical to that of the appropriate p-point of the terminal.

Plain Branch Errors

The following diagnostics can occur only for Branches with no piping components:

C500 TUBE BETWEEN HEAD AND TAIL LESS THAN TUBE MINIMUM

The distance between the Head position, HPOS, and the Tail position, TPOS, is greater than zero and less than the specified minimum tube length (default: 100mm).

C510 BAD HEAD TO TAIL GEOMETRY

Either the Head position, HPOS, does not lie at a positive distance along the line through TPOS in the direction TDIR or the Tail position, TPOS, does not lie at a positive distance along the line through HPOS in the direction HDIR.

The following illustration shows some typical examples:

C520 HBORE NOT SAME AS TBORE

When there are no components on the branch, the Head bore, HBORE, should be identical to the Tail bore, TBORE.

C530 HCONN IS NOT COMPATIBLE WITH TCONN

This implies that the Head is connected directly to the Tail with no Tube or piping components in between; hence the Head connection type, HCONN, must be compatible with the Tail connection type, TCONN.

C540 THIS BRANCH HAS NO COMPONENTS

This does not necessarily indicate an error. It is merely output as a warning to the designer.