Learn more about our scanners at: https://joescan.com
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| Excerpt |
|---|
| The following electrical documentation is for legacy products JS-20 SR, JS-20 XR, JS-20 WA, and JS-20 DL. |
Input Specifications
The encoder output should be either 5V DC push-pull or an open-collector. A differential output (e.g., RS-422) can be converted by using a Crouzet relay (part no. 84130104) or a differential to push-pull converter.
The Start Scan input signal is by default active low—low voltage causes the scanners to start synchronized scanning. However, the StartScanTriggerOnHigh parameter reverses this, and causes the scanners to start synchronized scanning when the Start Scan input is high voltage.
12-Wire Pinout
JS-20 scanners are generally connected with our standard 12-wire cable. Belden 9457 or an equivalent cable is suggested.
Table 1. Belden 9457 12-Wire Diagram
| Wire Color | DB25 Pin | Function |
|---|---|---|
| Red | 1 | 24 VDC / 0.6A |
| Pink | 5 | Isolated 12 - 24 VDC |
| Orange | 25 | Cable ID - A0 |
| Yellow | 12 | Cable ID - A1 |
| Green | 24 | Cable ID - A2 |
| Blue | 11 | Cable ID - A3 |
| Violet | 23 | Cable ID - A4 |
| Gray | 10 | Encoder Channel A |
| White | 22 | Encoder Channel B |
| Light Brown | 9 | Start Scan |
| Black | 14 | Ground |
| Dark Brown | 18 | Isolated Ground |
Sample Wiring Schematic
The sample wiring diagram below shows how to wire three JS-20 scanners with separate cable IDs. Note how the unused Address wires are simply left unconnected.
Figure 1. Sample wiring diagram for three JS-20 scanners with separate cable IDs
15-Wire Pinout
In some applications, you may want a signal when the lasers are on. For these applications, we supply a 15-wire cable with a Laser On output, which is pulled low when the laser is on. Belden 8458 or an equivalent cable is suggested.
This is an extremely uncommon type of wire for the JS-20s.
Table 2. Belden 8458 15-Wire Diagram
| Wire Color | DB25 Pin | Function |
|---|---|---|
| Red | 1 | 24 VDC / 0.6A |
| Black | 14 | Ground |
| Red/White | 5 | Isolated 12 - 24 VDC |
| Black/White | 18 | Isolated Ground |
| Orange/Black | 25 | Cable ID - A0 |
| Green/Black | 12 | Cable ID - A1 |
| Red/Black | 24 | Cable ID - A2 |
| White/Black | 11 | Cable ID - A3 |
| Blue | 23 | Cable ID - A4 |
| White | 9 | Start Scan |
| Orange | 10 | Encoder Channel A |
| Green | 22 | Encoder Channel B |
| Blue/Black | 20 | Laser 0 Output |
| Green/White | 7 | Laser 1 Output |
| Blue/White | 19 | Alternate Output (leave unconnected) |
Cable ID Wiring
The A0 through A4 wires are used to give each cable a unique Cable ID number. Instead of having to manually configure a scanner's location, a JS-20 configures itself according to the Cable ID that supplies power to the scanner. To set a Cable ID, pull specific Cable ID wires A0 through A4 to the isolated ground. The remaining wires should be left unconnected. The table below gives the wiring for all 32 possible addresses.
U = Unconnected
G = Grounded
Table 3. Cable ID Termination Table
| Cable ID | A4 | A3 | A2 | A1 | A0 |
|---|---|---|---|---|---|
| 0 | U | U | U | U | U |
| 1 | U | U | U | U | G |
| 2 | U | U | U | G | U |
| 3 | U | U | U | G | G |
| 4 | U | U | G | U | U |
| 5 | U | U | G | U | G |
| 6 | U | U | G | G | U |
| 7 | U | U | G | G | G |
| 8 | U | G | U | U | U |
| 9 | U | G | U | U | G |
| 10 | U | G | U | G | U |
| 11 | U | G | U | G | G |
| 12 | U | G | G | U | U |
| 13 | U | G | G | U | G |
| 14 | U | G | G | G | U |
| 15 | U | G | G | G | G |
| 16 | G | U | U | U | U |
| 17 | G | U | U | U | G |
| 18 | G | U | U | G | U |
| 19 | G | U | U | G | G |
| 20 | G | U | G | U | U |
| 21 | G | U | G | U | G |
| 22 | G | U | G | G | U |
| 23 | G | U | G | G | G |
| 24 | G | G | U | U | U |
| 25 | G | G | U | U | G |
| 26 | G | G | U | G | U |
| 27 | G | G | U | G | G |
| 28 | G | G | G | U | U |
| 29 | G | G | G | U | G |
| 30 | G | G | G | G | U |
| 31 | G | G | G | G | G |
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