---
title: "Tower Light"
space: "Wiki"
url: "https://www.sapconinstruments.com/wiki/tower-light-"
updated: "2026-10-18"
---

Various other components connects to the motherboard using the PUT terminals. Tower light is connected to the the motherboard using the hex core cable. This tower light is used to convey various information. The errors are interpreted as below:

<style>
table, th, td {
  border: 1px solid black;
  border-collapse: collapse;
}
</style>
<table>
  <tr>
    <th width=10%>S. No </th>
    <th width=40%>Errors</th>
    <th>Tower Light</th>
    <th>Buzzer</th>
  </tr>
  <tr>
    <td>1</td>
    <td>Trolley Not found </td>
    <td>Red flash</td>
    <td>Error</td>
  </tr>
  <tr>
    <td>2</td>
    <td>Trolley Value Missing</td>
    <td>Yellow Blink</td>
    <td>Alarm</td>
  </tr>
  <tr>
    <td>3</td>
    <td>Reader value missing</td>
    <td>Yellow Blink</td>
    <td>Alarm</td>
  </tr>
  <tr>
    <td>4</td>
    <td>Job not started, cannot stop</td>
    <td>Yellow flash</td>
    <td>Error</td>
  </tr>
  <tr>
    <td>5</td>
    <td>Un-handled error</td>
    <td>Red flash</td>
    <td>Alarm</td>
  </tr>
  <tr>
    <td>6</td>
    <td>Reader not found</td>
    <td>Yellow Blink</td>
    <td>Error</td>
  </tr>
  <tr>
    <td>7</td>
    <td>Job not started, cannot complete</td>
    <td>Yellow flash</td>
    <td>Error</td>
  </tr>
  <tr>
    <td>8</td>
    <td>Success- Job Card Stopped</td>
    <td>Green flash</td>
    <td>Success</td>
  </tr>
  <tr>
    <td>9</td>
    <td>Success - Job Card Completed</td>
    <td>Green flash</td>
    <td>Success</td>
  </tr>
  <tr>
    <td>10</td>
    <td>Success - Job Card Started</td>
    <td>Green flash</td>
    <td>Success</td>
  </tr>
  <tr>
    <td>11</td>
    <td>Incorrect Sequence</td>
    <td>Red flash</td>
    <td>Error</td>
  </tr>
  <tr>
    <td>12</td>
    <td>Overlapping Job Cards</td>
    <td>Red flashk</td>
    <td>Error</td>
  </tr>
  <tr>
    <td>13</td>
    <td>Workstation Busy</td>
    <td>Yellow flash</td>
    <td>Alarm</td>
  </tr>
  <tr>
    <td>14</td>
    <td>No job cards found</td>
    <td>Red flash</td>
    <td>Error</td>
  </tr>
  <tr>
    <td>15</td>
    <td>Network error</td>
    <td>Blink red-yellow</td>
    <td></td>
  </tr>
  <tr>
    <td>16</td>
    <td>Reader undetected</td>
    <td>Blue blink</td>
    <td></td>
  </tr>
  <tr>
    <td>17</td>
    <td>Distress</td>
    <td>Blue on</td>
    <td></td>
  </tr>
  <tr>
    <td>18</td>
    <td>Reader power</td>
    <td>Blue blink</td>
    <td></td>
  </tr>
  <tr>
    <td>19</td>
    <td>Reader not detected</td>
    <td>Green-Blue blink</td>
    <td></td>
  </tr>
</table>