Hitachi HIDIC EH150 EN-TRMME, Руководство по применению

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Chapter 4 Basic functions and System configuration
4 – 5
4.2.6 Compression mode of master module (Compression remote method)
In the case of old models H-200/250/252B/252C, input data and output data are stored in one channel by setting I/O
assignment “B1/1” as shown in left side of Figure 4.7. But in the case of EH-150 (include EHV) series, input data
and output data are stored in separate channel by setting I/O assignment “B1/1” as shown as right side of Figure 4.7.
In order to replace old models to EH-150 with compatibility, you can set master module with compression mode,
and can compress one word of input data and one word of output data into one channel as shown in Figure 4.8. You
can replace old models to EH-150 (include EHV) with no change in I/O number for slot on slave base by setting
master and slaves compression mode. Please refer to Section 4.4.2 for example of replacement with compression
mode.
Similarly in the case of EM/EM-II series, there is a function that input data and output data are stored in one
channel, and slave module outputs the output data to image slots. In this case it is convenient to setting
compression mode as Section 4.6.2.
Occupied channels of master
Input Output
0
X10000
～
Y10016
～
1
X10100
～
Y10116
～
2
X10200
～
Y10216
～
3
X10300
～
Y10316
～
I/O assignment for
remote base
H-200
CPU
Occupied channels of master
Input Output
0
X10000
～ －
1
－
Y10016
～
2
X10100
～ －
3
－
Y10116
～
4
X10200
～ －
5
－
Y10216
～
6
X10300
～ －
7
－
Y10316
～
I/O assignment for
remote base
EH-150
CPU
Compression mode of master：
OFF
（
Master stores 8words to 8channels
）
CPU
I/O refresh
CPU
I/O refresh
Channel
No.
Channel
No.
Figure 4.7 Difference point of H-200 and EH-150 in the case of assignment “B1/1” for remote base
Occupied channels of slave St.No.0
Input Output
0
X10000
～
Y10016
～
1
X10100
～
Y10116
～
2
X10200
～
Y10216
～
3
X10300
～
Y10316
～
0 1 2
Slot No.
Remote
communication
CPU
Occupied channels of master
Input Output
0
X10000
～
Y10016
～
1
X10100
～
Y10116
～
2
X10200
～
Y10216
～
3
X10300
～
Y10316
～
X
16
Y
16
X
16
Y
16
Y
16
Y
16
X
16
X
16
3 4 5 6 7
Compression mode of slave:
ON
(Slave compress 8 words to 4 channels)
Compression mode of master:
ON
(Master compress 8 words to 4 channels)
I/O assignment for
remote base
CPU
I/O refresh
Occupied slots (Input module only)
Image slots (Output module only)
Channel
No.
Channel
No.
Slave
I/O refresh
Figure 4.8 Correspondence of occupied channels and I/O slots (Compression remote method)