MESH circular requirements
- Last UpdatedApr 14, 2025
- 2 minute read
This topic describes the specification requirements for circular mesh (MESH) components.
Parameter description requirements
-
Parameter #1 = Width of arrive
Data set requirements
For information about data set requirements that apply for all circular components, refer to Circular component requirements.
The following requirements are in addition to the data references that are created for parameters.
|
KEY |
Type |
Description |
Default ( /Expression **) |
|
SHAP |
Null |
Duct shape |
‘CIRC’ |
|
AARR |
Distance |
Width of arrive |
PARA[1 ] |
|
BARR |
Distance |
Height of arrive |
0 |
|
ALEA |
Distance |
Width of leave |
0 |
|
BLEA |
Distance |
Height of leave |
0 |
|
LENG |
Distance |
Length of subcomponent in line of duct |
Not available |
** Where the Default value is set to a parameter, the Expression value must be set to the same parameter. This is applicable for all component types.
P-point requirements
For information about P-point requirements that apply for all circular components, refer to Circular component requirements.
P-point P2 has Connection Type (PCON) set to OPEN because meshes are closing components and no inline component can be added after them.
The position of P-point P2 is not important, but must be included.
The following table shows the additional required P-points:
|
Type |
Connection Type (PCON) |
Bore (PBOR) |
Axis Direction (PAXI) |
PZ Axis (PZAXI) |
Point Width (PWID) |
PDShape attribute |
AllAngle attribute |
|
|---|---|---|---|---|---|---|---|---|
|
1 |
PTAX |
CIRC |
(RPRO AARR + RPRO BARR) |
-Z |
Y |
(RPRO AARR + RPRO BARR) |
CIRC |
1 |
|
2 |
PTAX |
OPEN |
0 |
Z |
Y |
unset |
0 |
1 |
|
61 |
PTMI |
0 |
0 |
Y |
unset |
unset |
0 |
unset |
|
62 |
PTMI |
0 |
0 |
Y |
unset |
unset |
0 |
unset |
|
63 |
PTMI |
0 |
0 |
Y |
unset |
unset |
0 |
unset |
|
64 |
PTMI |
0 |
0 |
Y |
unset |
unset |
0 |
unset |
The P-points are arranged as shown in the following graphic:

Specification requirements
The following specification headings are required:
-
Type (TYPE)
-
Duct Shape (PSHA)
-
Duct Width (PWID)
-
Duct Height (PHEI) = 0
Note:
This type of component does not exist in the AVEVA supplied catalogue for rectangular HVAC.