Automatic Data Receiving - 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 (33 pages)
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(2). Sending area
Sending area can be specified in Web page of "ASR I/O Area (Connection N) Setting". One connection can handle
up to 10 sending areas. (One sending area is called as "Entry")
In case of sending several kinds of I/O areas, they are once sent to a sending buffer according to the setting in web
browser. The following Figure 7.1.1.2 shows an example of R0 to R9 (10 bits) and WM0 to WM1 (2 words).
Send area information
No.
I/O
Top
1
R
0
2
WM
100
...
...
9
10
Note
- 1 connection can handle up to 1454 bytes.
- When designated bit size is less than 8 bits (1 byte), the rest bits are all 0.
7.1.2
Automatic data receiving
This function is able to receive data from other EH-ETH or host PC to internal buffer and write to designated
receiving area. Users do not have to prepare ladder program for sending the data from the buffer to receiving
area in CPU.
EH-CPU448
Receiving area
(A). After the power ON, host PC opens ASR connection between EH-ETH and host PC.
(B). After the connection opened, EH-ETH waits data from other station.
(C). EH-ETH writes received data to receiving area of the CPU.
The specification of automatic data receiving is mentioned as below.
(1). ASR connection
Up to 6 connections are available for the automatic data receiving function. One ASR connection is able to handle
both sending and receiving at the same time.
Chapter 7 Automatic Sending/Receiving function (ASR)
Size
10
H00 R0
2
H01 R8
H02
H03
H04
H05
Figurer 7.1.1.2 Sending area and sending buffer
EH-ETH
Receiving buffer
(C)
(B)
Figure 7.1.2.1 Outline of automatic receiving
7-2
Sending buffer
MSB
R1
R2
R3
R4
R9
0
0
0
WM100 High Byte
WM100 Low Byte
WM101 High Byte
WM101 Low Byte
(A)
LSB
R5
R6
R7
0
0
0
Host PC
Ethernet
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