🚧 WIP

docs/spec/software-spec.md

@@ -890,7 +890,15 @@ Terminal monitors (§9) suffice for single engineers, but FAT benches are
 - FR-10.2.2: The UI shall present the **node overview**: module list with
   article numbers, per-module channel tables (type, module, channel,
   addressing `DI0.1` per FR-4.3.11, Modbus address, current value/state),
-  derived from the same process image the Modbus server serves.
+  derived from the same process image the Modbus server serves. On the
+  node graphic (requested 2026-10-04, refined same day): each module
+  shows its kind+slot designation (`DI0`, `DO2`, `AI4`, …) in the
+  module header's upper right corner — same size and vertical
+  alignment as the article number — and the channel indicators carry
+  only the 0-based channel number: below each DI/DO LED, and on analog
+  modules outside the indicator stack, above the overflow and below
+  the underflow LED (FR-10.2.14) so the limit LEDs stay adjacent to the
+  bar.
 - FR-10.2.3: Values shall update live (WebSocket push or short-polling),
   including changes made by the PLC/master over Modbus, by scenarios, by
   the console monitor, or by other UI clients — one shared source of truth.
@@ -947,6 +955,16 @@ Terminal monitors (§9) suffice for single engineers, but FAT benches are
   side, DO/AO = master-side force through internal paths). The list
   updates live like the rail (FR-10.2.3) and is the primary working
   surface for benches with many channels.
+- FR-10.2.14: **Analog display ranges** (requested 2026-10-04): the
+  analog bar indicators (rail + list) scale a channel's raw value
+  against a display range. The default range is 0–4095 counts
+  (100 % at 4095, matching the WAGO 750 analog modules' 12-bit
+  scaling); per-channel `min`/`max` can be configured in the node
+  configuration — used by both AI (generated) and AO (used) values.
+  Values within the range fill the bar 0–100 % from the bottom.
+  Underflow/overflow are indicated: the bar fills in the limit color
+  (red) and a small red LED above the bar lights for overflow, below
+  the bar for underflow, clearing when the value returns to range.
 
 ### 10.3 Implementation decisions (binding, 2026-10-03)