Dsa3200-Ptp Buffer Description; Dsa-Ptp Network Configurations; Isolated Network; Integrated With System Network - Scanivalve DSA3217-PTP Series Operation And Service Manual

DSA3200-PTP

DSA3200-PTP Buffer Description

The DSA3200-PTP buffer is a software buffer. It is set up as a FIFO. It is factory set to hold 10000 averaged frames of data.
Each frame uses 292 bytes of memory.
The buffer is the liaison between the scan task and the scan output task. The scan output task has a higher priority than the
scan task. Under initial conditions, when the buffer is empty, the scan task places one frame of data in the buffer. It then
signals the scan output task to read the buffer until it is empty. However, when multiple frames of data are in the buffer, the
output task continues until the buffer is empty. Multiple frames of data will accumulate if the scan output task is blocked by
the network while outputting data.

DSA-PTP Network Configurations

The DSA-PTP may be configured in three basic network arrangements:

Isolated Network

The isolated DSA-PTP network provides the fastest possible data throughput because other network traffic has been elimi-
nated. DSA-PTP commands are issued from the network client/host and data is directed to the network client/host in UDP
format. Data is removed from the client/host via disk or tape. This configuration is ideal for high speed data transfer with
data reduction that is handled by the network client/host.

Integrated with System Network

The integrated DSA-PTP provides the most accessible data to all network clients. Any client/host on the network may control
any or all of the DSA's. Network throughput (TCP/IP) may be reduced because of other network traffic. This configuration is
ideal for systems that can tolerate slower data transfer rates but require easy access by multiple client/hosts to each DSA-
PTP unit.

Sub-Network with Gateway

The DSA-PTP sub-network allows high speed data transfer of the sub-network while allowing access by a larger network. The
gateway is most effective as a multi homed client/host that can store the DSA-PTP data for later access by client/hosts on the
main system network.

DSA-PTP Network Addressing

Each DSA-PTP module has the capability to accept commands in Unicast (only one DSA-PTP accepts command)
Each DSA-PTP module has a unique, factory set, 48 bit physical Ethernet address. When running TCP/IP protocol the DSA-
PTP modules support ARP (address resolution protocol) to enable the client/host to determine the relationship between the
IP address and the Ethernet address. The IP address is user assignable.
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Section 5: Software