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The image slot is used when the number of I/O modules mounted on slave base is more than the number of occupied
channels with rotary switch as shown in Figure 4.39. Please turn on the compression mode of replaced slave module
(EH-TRMLE) in this case. Please set similar with Figure 4.38 except for compression mode.
But when output module is mounted on occupied slot like as Figure 4.40, you can't replace slave only. In this case,
please replace both of master and slave station as shown in Figure 4.31, and use normal remote method with
compression mode off.
Master station: not replacing in
order to avoid transformation of
ladder program
Ｅ
The image slot is used when the number of I/O modules mounted
on slave base is more than the number of occupied channels with
rotary switch. In this example 8 modules is more than 5 channels.
Figure 4.39 Replacement of only slave station in the case of using image slot (compression mode: ON)
When output modules are mounted on occupied slots in slave base, it is impossible to
replace slave station only. Please replace both of master and slave station
Figure 4.40 Impossible case of replacement with slave station only
Setting of slave St. No.0
U
0
5
L
Slave module
(RIOH-TL/RIOM-TL)
X
X
X
16
16
16
Occupied
slots
The number of mounted modules:
Slave module
(RIOH-TL/RIOM-TL)
X
X
X
16
16
16
Occupied slots
because output modules are mounted on occupied slots
4 – 27
Chapter 4
Basic functions and System configuration
In the case of master is EM/EM-II series,
Set surely "E" the rotary switch (upper: U)
0
First CH:
Number of
occupied
5
channels:
Replacement slave
station only
X
X
Y
Y
Y
16
16
16
16
16
Image
slots
8
Y
Y
Y
Y
Y
16
16
16
16
16
Image slots
Setting of slave St. No.0
Slave St. No.:
U
0
0 or E
Number of
occupied
L
5
5
slots:
Compression
ON
mode:
1
2
3 4
7
5 6
8
First CH:
Slave module
(EH-TRMLE)
Ｙ
X
X
X
X
X
16
16
16
16
16
16
Occupied
slots
The number of mounted modules:
Please turn on the
compression mode of
replaced slave module.
0
Ｙ
Ｙ
16
16
Image
slots
8
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