Automatic Sending/Receiving Function (Asr); Asr; Automatic Data Sending - Hitachi HIDIC EH-150 Applications Manual
Programable controller; ethernet module(eh-eth)
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Also See for HIDIC EH-150:
- Applications manual (117 pages) ,
- Instruction manual (29 pages) ,
- Applications manual (20 pages)
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Chapter 7
7.1
ASR
EH-ETH has ASR function. The detailed information is mentioned as follows.
7.1.1
Automatic data sending
An automatic sending function is a function to transmit the data of CPU module to other node. The outline of
this function is shown as Figure 7.1.1.1. If you choose a cyclic sending, you can use an automatic data
sending function. In case of the cyclic sending, you do not have to prepare ladder program for sending data
from CPU to buffer area of EH-ETH.
EH-CPU448
transmission area
(A). After the power ON, EH-ETH opens automatic sending connection (here after ASR connection) for EH-ETH
and host computer.
(B). After the connection opened, EH-ETH waits for a request from ladder program or cyclic timing. Then EH-
ETH reads designated data. Several kinds of I/O type can be set in the sending area. (1 connection is able to
handle up to 10 entry.)
(C). The designated area data is written in a buffer area of EH-ETH.
(D). The data is sent to host computer.
The specification of automatic data sending is mentioned as below.
(1). ASR connection
A transmission route of TCP/IP is called connection. EH-ETH is able to handle up to 6 connections at the same
time. One connection can transmit and receive data.
Automatic Sending/Receiving
function (ASR)
EH-ETH
transmission buffer
(B)
(C)
Figure 7.1.1.1 Outline of automatic sending
Chapter 7 Automatic Sending/Receiving function (ASR)
(A)
7-1
Host computer
(D)
Ethernet
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