Chapter 4 Basic functions and System configuration
4 – 3
(2) Slave station number (Slave St. No.)
Please set slave station number 0 to 7 to compact remote slave module (EH-TRMLE) with rotary switch
(U) unlike old model slave module (RIOH-TL, RIOM-TL, etc) for the slave station identification.
In this case, please set not to overlap slave station number. "Slave station number" is abbreviated at the
following, "Slave St. No.".
Slave St. No.0
Slave module (EH-TRM LE)
Slave St. No.1
Slave module (EH-TRM LE)
Slave St. No.2
Slave module (EH-TRM LE)
Figure 4.3 Slave station number (Slave St. No.)
4.2.3 Occupied channels and specification method
(1) Occupied channels
The area used respectively in compact remote master module (EH-TRMME) and slave module
(EH-TRMLE) is called an occupied channels. Figure 4.4 shows the example of the occupied channels of
one master and two slave stations. The number of occupied channels used in the slave module is decided
according to the number of I/O modules mounted on the slave base. Moreover, the number of occupied
channels of master module is matched to the total of the number of occupied channels of all slave modules.
The occupied channels of slave modules not overlap between slave modules.
(2) Transmission range of remote communication
Occupied channels of master and slave are always refreshed to the same data by remote communication.
Unused channels are not transmitted by remote communication. Therefore, the remote refresh time
depends on the number of occupied channels of master module as the formula 4.2 to 4.3 in Section 4.8
(3) Specification method of occupied channels
Please set final channel number with side DIP switch for occupied channels of master module. And for
occupied channels of slave module, please set first channel number with bottom DIP switch and occupied
slots with front rotary switch (L). Please refer to Chapter 3 for details of each switch.
R em ote I/O area in m aster
Input
O utput
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Final channel No.:
7
O ccupied channels
(8 channels)
U nused channels
(8 channels)
R em ote I/O area in
Slave St. N o.0
Input
O utput
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
First channel N o.:
0
O ccupied slots:
5
(O ccupied channels)
R em ote I/O area in
Slave St. N o.1
Input
O utput
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
First channel N o.:
5
O ccupied slots:
3
(O ccupied channels)
U nused channels
(11 channels)
O ccupied channels
(
5
channels)
U nused channels
(5 channels)
O ccupied channels
(
3
channels)
U nused channels
(8 channels)
R em ote
com m unication
C hannel
No.
C hannel
No.
Channel
N o.
Rem ote com m unication
Figure 4.4 Occupied channels and remote communication
