12 VP-1608 - Connecting a Single VP-1608
To connect a device with a RS-485 port to the VP-1608:
• Connect the A (+) pin on the RS-485 port of the PC to the A (+) pin on the
RS-485 port on the rear panel of the VP-1608
• Connect the B (–) pin on the RS-485 port of the PC to the B (–) pin on the
RS-485 port on the rear panel of the VP-1608
• Connect the G pin on the RS-485 port of the PC to the G pin on the RS-485
port on the rear panel of the VP-1608
5.4 Setting the MACHINE # DIP-Switches The MACHINE # determines the address of a VP-1608 unit when several VP-1608
units are controlled by a PC or serial controller. Set the MACHINE # on a VP-1608
unit via DIPS 1, 2, and 3 (DIP 4 is for RS-485 termination), according to the
following table:
MACHINE
# DIPS
1 2 3
1 Master OFF OFF OFF
2 OFF OFF ON
3 OFF ON OFF
4 OFF ON ON
5 ON OFF OFF
6 ON OFF ON
7 ON ON OFF
8 ON ON ON
When using a stand-alone VP-1608 unit, set the MACHINE # to 1.
When connecting more than one VP-1608 unit, set the first machine (the Master)
connected via RS-232, as MACHINE # 1. The other VP-1608 slave units (each set
to a MACHINE # between 2 and 8) interconnect via their RS-485 ports to the
RS-485 port on the Master.