x
Mode = Ethernet Or USB: The Ethernet control port on the rear panel is active, so
long as the amplifier is not connected via USB, whereupon it automatically takes priority.
Selecting this choice will then ask for the following further information to be confirmed:
RS485 Relay: Choose ON to relay all remote control data onto the RS485
network for connection to further devices (other DPA amplifiers or XTA processors)
USB Speed: As the USB connection appears as a virtual comm port in remote
software, it still has an associated serial speed. Leave at the default of 115200. This
is not the actual USB serial data rate — it’s the virtual COM port data rate!
RS485 Speed: Only shown if RS485 Relay = ON: set RS485 baud rate
(recommended to use 115200 unless working with older DP224 and DP226 processors
in which case use 38400)
Remote ID Number: Set a device ID (still required even on Ethernet
connections). This must be unique to the connected unit — setting the same ID on
multiple units may cause comms problems for all devices.
IP Mode: Choose either Static or Auto IP. Auto IP will generate an IP address
based on unique hardware features such as MAC address. Choose Static if you need
to select the IP address to lie within a specific range, for instance when working
within a larger infrastructure.
GtWay: The gateway address is used for external access to the Internet and
should be left at the default setting.
SubNt: The subnet mask is used to subdivide IP addresses into groups that allow
further sub-groups addressing to be defined, so further extending the address range.
Leave at default 255.255.255.0 unless specifically required.
IP: The IP address specifies the amplifier’s unique identifier on the Ethernet
network. It is used in conjunction with the amplifier’s Remote ID number to identify
individual devices on the network. Make sure this is not set to the same value as any
other devices or comms problems will occur.
Remember that this mode is purely an automatic priority switching version of an Ethernet
or USB connection — it is not possible to interconnect amplifiers via the Ethernet cables
either directly or via a router — use the RS485 bus for device interconnection.
All three connection methods will relay data either explicitly (RS485 using the hardware
bus connection) or electronically (USB or Ethernet through the processor) if required.
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