Choosing Components from a Displayed List

Model Reference Manual

•

The CHOOSE command displays Selection options on screen forms which can be picked using the cursor. Once an element has been created using the NEW command, CHOOSE may be used to list what is available in the Specification.

•

The effect of choosing from the displayed list and applying the form setting via the OK button is to set the SPREF and LSTUBE attributes of the current Component, taking into account the choice made and the current bore. Specification-dependent Design attributes (if any) will also be set, i.e. HEIG, ANGL, RADI and SHOP. The Component may (optionally) be positioned and connected to the previous (or next) Component (or to the pipe head or tail). If the Cancel button is selected, the Component’s attributes will remain unchanged.

•

It may be that a newly selected Component is unsuitable for connection to the previous (or next) Component (or to the Pipe Head or Tail), for example due to incompatible connection types. In such a case, the new Component will be force-connected and a warning alert displayed. This action can be turned off by giving the command

CHOOSE FORCECONNECT OFF

•

Connection attempt will still be made, but Component will be left at Site origin if connection types are incompatible.

•

If the force-connect facility is OFF, a connection attempt will still be made following component selection. In this case however, the newly selected Component will be left at the Site origin if connection types are incompatible. This action can be turned off by giving the command

CHOOSE AUTOCONNECT OFF

•

No connection attempt will be made; Component will be left at Site origin.

•

The default state is CHOOSE FORCECONNECT ON.

•

If only one choice of Component is available, for example flanges of only one type are valid at a particular bore, MODEL will set SPREF and LSTUBE automatically. If there are no valid choices, for example there are no Components of a particular type for the specified bore, an error alert is displayed.

The CHOOSE command may be used within the same command line as a NEW command.


Example:
CHOOSE	Displays a general Selection form for the current element. Selection criteria displayed will depend on those available in the specification.
	Example form:
CHOOSE TEXT	Displays a Selection form listing choices based on the Specification Component’s (SPCOM’s) Detail Description Text (obtained from the RTEX attribute of the relevant DTEX element) and Material Description Text (obtained from the XTEX attribute of the relevant MTEX element).
	Example form:
CHOOSE RTEX CHOOSE STEX CHOOSE TTEX	Displays a Selection form listing choices based on the SPCOM’s Detail Description Text (obtained from the RTEX, STEX or TTEX attribute of the relevant DTEX element).
	Example form:
CHOOSE XTEX CHOOSE YTEX CHOOSE ZTEX	Displays a Selection form listing choices based on the SPCOM’s Material Description Text (obtained from the XTEX, YTEX, or ZTEX attribute of the relevant MTEX element).
	Example form:
CHOOSE ALL	Combines the above CHOOSE and CHOOSE TEXT options.
	Example form:
CHOOSE SPEC /RF150	As CHOOSE, but selections are made from the named specification rather than from that of the owning Branch.
CHOOSE DEFAULT	Default settings will be selected wherever they occur in the Specification. For example, if the default STYP for a Reducer is CONC, only Concentric Reducers will be listed in the selection form.
NEW REDU CHOOSE WITH ABOR 100 LBOR 80	Choose from Reducers with specified arrive and leave bores only
NEW ELBO CHOOSE WITH STYP LR	Choose from long-radius Elbows only.

Note:

The Selection criteria (see syntax diagram) are independent.

The CHOOSE function assumes that the Specification hierarchy is as follows, and use of the command will generate an error if this is not so:

•

The first level must contain the question TYPE

•

The second level must contain the question PBOR or BORE

Command Syntax:

>- CHOOse -+- AUTOConnect --.
           |                |
           |- FORCEConnect -+- ON --.
           |                |       |
           |                ‘- OFF -+->
           |
           |- SPec <gid> -.
           |              |
           ‘--------------+- DEFault -.
                          |           |
                          ‘-----------+- RTEX -.
                                      |        |
                                      |- STEX -|
                                      |        |
                                      |- TTEX -|
                                      |        |
                                      |- XTEX -|
                                      |        |
                                      |- YTEX -|
                                      |        |
                                      |- ZTEX -|
                                      |        |
                                      |- TEXT -|
                                      |        |
                                      |- ALL --|          .----<----.
                                      |        |         /          |
                                      ‘--------+- WITH -*- <wivl> --|
                                               |        |           |
                                               |        ‘- <wiwor> -+->
                                               ‘->

where:

<wivl> is>--+-- PBOre integer --.
            |                   |
            |-- ANgle ----------|
            |                   |
            |-- RAdius ---------|
            |                   |
            |-- ABOre ----------|
            |                   |
            |-- LBOre ----------|
            |                   |
            |-- PREssure -------|
            |                   |
            |-- TEMperature ----|
            |                   |
            ‘-- RATing ---------+-- <uval> --> 

and

<wiwor> is >--+-- STYpe --.
              |           |
              |-- TYpe ---|
              |           |
              |-- ACOnn --|
              |           |
              |-- LCOnn --+-- word -->
              |
              |-- PCOnn integer word -->
              |
              ‘-- word --+-- value --.
                         |           |
                         ‘-- word ---+-->