A special invisible block must be present on the drawing. The WD_M.dwg is found in the default symbol library. Here is an attribute list of information that is carried on the WD_M block of the drawing, sorted by category:
SHEET or SHEET_
sheet number for the drawing (%S)
optional drawing number for the drawing (%D)
optional IEC project code (%P)
optional IEC installation code (%I)
optional IEC location code (%L)
units scaling factor (1.0 = inch, 1.0 = full-size mm, 25.4 = inch scaled up to mm)
scaling adjustment (0 = default, 1.25=for 25% bigger)
ladder orientation: "H" = horizontal rungs (vertical ladders); "V" = vertical rungs (horizontal ladders)
reference numbering system: ladder line reference-based or X-Y grid reference-based
default rung spacing
default ladder width
default rung-to-rung line reference increment (default = 1)
draw ladder rungs: 0 = none, 1 = draw all rungs for new ladder, 2 = skip 1, 3 = skip 2, and so on.
3-phase bus spacing value
tag mode value: S = sequential, R = reference-based
starting sequential number of the drawing -for sequential tagging only (that is, "1")
comma-delimited component tag suffix list -for reference-based tagging only (that is, "A, B, C")
component tag format specifier (default=%F%N)
wire number format: S = sequential, R = reference-based
starting sequential number of the drawing - for sequential tagging only (that is, "100")
wire tag suffix list - for reference-based tagging only (that is, "A,B,C")
wire tag format specifier (default=%N)
wire number increment
wire leaders: 0 = only as required, 1 = always insert wire leaders, 2 = never insert leaders
wire gap style: 0 = wire gap, 1 = use loops across gaps, 2 = solid crossing(no gap)
retag and wire numbering sort mode
wire number placement offset distance (GBL_wd_wnum_offset); same as the project-wide + value in the .wdp file. 0.0 or missing= centered on wire (default), >0.0 = offset from top or left end by given distance
component tag layer
fixed component tag layer
description layer of the parent component
description layer of the child component
component terminal pin numbers layer
cross-reference layer of the parent component
cross-reference layer of the child component
component location code layer
component position code layer
layer for schematic component graphics
dashed link lines layer
location box layer
valid wire layer names where "" = all valid (comma-delimited)
valid wire number
extra wire number layer
fixed wire layer
terminal and signal arrow wire number layer
valid layer names for Fan In/Out, single-line wires (comma-delimited)
Fan In/Out symbol style number
cross-reference format specifier (default=%N)
optional cross-reference format for inter-drawing references (that is, %S-%N)
cross-reference style: 0 = text, 1 = graphical, 2 = table
1's bit = include unused contacts, 2's bit (if table)= include parent coil
0 = separate reference, 1 = contact count totals
cross-reference fill-with text
0 = sort by line reference, 1 = sort by pin list
cross-reference text between references (text style cross-referencing)
0 = contact mapping (text), 1 = graphic
0 = JIC, 1 = IEC
contact mapping list
table style name
table fields to include
table available field names
table fields justification
X coordinate origin for X-Y or X-zone
Y coordinate origin for X-Y or X-zone
horizontal interval spacing for X-Y or X-zone
vertical interval spacing for X-Y referencing
horizontal starting character for X-Y or X-zone
vertical starting character for X-Y referencing
X-Y referencing format: 0 = V-H, 1 = H-V
X-Y delimiter character
list of 3 in line wire number/label gap settings (see WNUM_FLAGS bit 1 for toggle mode); value saved to GBL_wd_inline_gapas a list. nil or "(num1 num2 num3)"
You can change the WD_M block so that your settings are always the default.
The settings and layer names are collected from the drawing and appropriate adjustments are made to the WD_M block.
The new version of the WD_M block replaces your existing one.
As AutoCAD Electrical adds new features, new attributes are sometimes added to the default WD_M block. However, if your drawing was created with an older WD_M block it may not carry these attributes. AutoCAD Electrical provides an easy way to swap older WD_M blocks with the new WD_M block.
Update to New WD_M Block, Values, Layers
Replaces the schematic wd_m.dwg block in the current drawing with a newer copy, and converts to the newer configuration values and layers.
Update to New WD_M Block, No Changes
Replaces the schematic wd_m.dwg block in the current drawing with a newer copy, but keeps existing configuration values and layer names.
Update to New WD_PNLM Block, Values, Layers
Replaces the panel wd_pnlm.dwg block in the current drawing with a newer copy, and converts to the newer configuration values and layers.
Update to New WD_PNLM Block, No Changes
Replaces the panel wd_pnlm.dwg block in the current drawing with a newer copy, but keeps existing configuration values and layer names.
Writes the attribute settings for the wd_m block in the current drawing to the wd_m.dwg drawing file in the symbol library.
The WD_M and WD_PNLM blocks carry attribute values that define the default AutoCAD Electrical settings.
Defines the default schematic settings.
Defines the default panel settings.
A drawing needs an invisible block, WD_M.dwg, on the drawing to be compatible with AutoCAD Electrical.
The WD_M.dwg block is located in the default symbol library. This block carries about 50 attributes that define settings, layer names, and other default settings that are referenced by AutoCAD Electrical commands.
If the drawing includes panel layout symbols, the block WD_PNLM.dwg is also needed. The WD_M and WD_PNLM blocks can be present on the same drawing.
To insert a WD_M or WD_PNLM block