6.3Connecting to the VP-81SIDN 8x1 Digital Step-In Switcher via RS-232
You can connect to the VP-81SIDNvia an RS-232 connection using, for example,
a PC.
To connect to the VP-81SIDN via RS-232:
∙Connect the panel of the and G to pin
Control RS-232 3-pin, terminal block connector on the rear VP-81SIDNunit via a 3-wire cable (pin TX to pin 2, RX to pin 3, 5) to the RS-232 9-pin D-sub port on your PC
6.4Connecting to the VP-81SIDN via RS-485
You can operate the VP-81SIDNvia the RS-485 port from a distance of up to 1200m (3900ft) using any device equipped with an RS-485 port (for example, a PC). For successful communication, you must set the RS-485 machine number and bus termination.
To connect a device with a RS-485 port to the VP-81SIDN:
1.Connect the TxD+ 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-81SID.
2.Connect the TxD– 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-81SIDN.
3.If shielded TP cable is used, connect the shield to the G (ground) pin on the unit.
6.4.1Connecting and Controlling Multiple VP-81SIDN Devices
You can connect up to four VP-81SIDNdevices with operation via RS-232 (as shown in the example in Figure 6) or Ethernet. Connecting four devices provides 37 inputs.
14 | VP-81SIDN - Connecting the VP-81SIDN 8x1 Digital Step-In Switcher |
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