VBrick Systems VB5000, VB6000, VB4000 manual Configuration Passthrough COM1

MPEG-2 Configuration

Configuration: Passthrough

The TCP/IP network can serve as an intermediary between two VBricks and their serial ports or between a PC application sending IP packets and a VBrick's serial port. Passthrough can be configured using addresses on Ethernet. Passthrough on COM2 is only available on VBricks with a CPLD (programmable logic device) Version greater than 21. (To check the

CPLD , go to Status > System Information > CPLD Version.) If the IWS screens do not provide

a COM1 or COM2 selection at the top of the Passthrough screen, the VBrick defaults to COM1. This feature supports a wide range of serial applications. See "Serial Port Passthrough" in the VBrick Appliance Getting Started Guide for more about serial port passthrough. Note that RS- 232/422/485 end-to-end control is initiated by enabling or disabling Passthrough. The Passthrough port for COM1 is 4439; the port for COM2 is 4414.

Note COM is dedicated to Passthrough. COM2 is a dual purpose interface. At the factory default it can be used as a serial connection to the VBrick Command Line Interface (CLI) tool for configuration purposes. When configured for Passthrough, the CLI feature is used for camera control.

Configuration: Passthrough > COM1

Passthrough State

Used to enable/disable Passthrough. Three states are possible:

•Disabled – The VBrick will neither initiate nor respond to Passthrough setup requests.

•Responder – In this case the VBrick will accept a connection request (up to 64 connection requests) from another VBrick set as an Initiator or from a PC camera control application.

•Initiator – In this case it will continuously attempt to automatically initiate a Passthrough connection to the remote destination.

VBrick MPEG-2 Appliance Admin Guide 39