User's Manual

Page 30

System Turn-up Procedures

System turn-up must follow a step-by-step procedure. Never wire up a system and

apply power to it all at once. This can turn a potential success into an immediate

disaster.

The following steps should be observed:

1. Do not apply power to any units.

2. Check all wiring and device configuration.

3. Disconnect all units from RS-485 communication line.

4. Check for the correct supply voltage before connecting it to any device.

5. Power up the PC running the VeriAdmin or other software that is designed

to work with the Veri- series readers. The RS-232 to RS-485 converter should

also be powered up at this time. If communicating to units via Ethernet, be

sure the correct cable is connected to the PC NIC card.

6. Configure the PC software.

7. Check for ground fault between the converter and the RS-485

communication line (see figure 13). Find any faults and clear them if they

exist.

8. Connect the PC and converter to the RS-485 line.

9. Power up a SLAVE (V-Prox or other reader), but DO NOT connect it to the

RS-485 line. Verify that it powers up correctly.

10. Check for ground fault between this unit and the RS-485 communication

line. Find any faults and clear them if they exist.

11. Connect this unit to the RS-485 line.

12. Verify that it communicates with the PC software.

13. If there are more SLAVES (V-Prox or other readers), add the subsequent

readers by repeating steps 9-12.

Device Configuration Check

Devices must be configured correctly before they can communicate. Common

problems include not correctly selecting RS-485 as the Com Port, mismatched

baud rates, and incorrect device addresses. Each device sharing the RS-485 line

must have a unique address.