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Chapter 3
Name and function of each part
Description of Rotary switch
Rotary switch
C
D
B
A
E
9
F
U
8
0
7
1
6
2
3
5
4
MODE
C
A B
D
E
9
F
L
8
0
7
1
6
2
3
5
4
[Default setting: U=A, L=0]
Description of Front DIP switch
Symbol
Setting description
HS
HS (high-speed refresh
mode) selecting
HS
4
3
MODE
2
HOLD
TERM
1
[Default setting: ON]
MODE
MODE (compatible mode)
selecting
HS
4
3
MODE
2
HOLD
TERM
1
[Default setting: ON]
HOLD
HOLD (input hold function)
selecting
HS
4
3
MODE
HOLD
2
TERM
1
[Default setting: OFF]
TERM
TREM (built-in terminator
insertion
/
selecting
HS
4
3
MODE
HOLD
2
TERM
1
[Default setting: OFF]
Symbol
Meaning
U
I/O
assignment
(upper)
(9, A, E)
L
Number of
slave stations
(lower)
(1 to 8 units)
Refresh operation mode on remote communication is set (High-speed or Low-speed).
In the case of all local stations are EH-TRMLE, the high-speed refresh mode can be
selectable. Remote refresh time is shown below.
HS = ON:
HS = OFF:
The channel is unit of transmitted and received data between master and slave
ON
stations. Refer to Chapter 4 for detail.
HS
OFF
ON
Operation mode on remote communication for remote master module is set.
Compatible mode allows slave module(EH-TRMLE) to connect with master/slave
stations for series other than EH-150.
Always
Always make sure that this switch is turned on, that is the compatible mode.
ON
MODE
OFF
ON
ON
When the communication time-out error occurred, it is selected whether the input
data from the slave is held or not. (Hold means the last data received properly is
fixed.)
HOLD
OFF
ON
ON
It is selected whether the terminator build in the master module is inserted between
non-insertion)
A and B terminals of the communication connector. The terminator has to be
inserted in both ends of master or slave module connected through a twist-pair cable.
2 types of terminator, 100Ω and 150Ω, are build in the master module. It is possible
to select which to insert by the side DIP switch.
TERM
OFF
ON
ON
I/O assignment of master module is set. Always set 9 or A or E.
I/O assignment
Set
of master
0 to 8
Undefined
9
4W/4W
A
Remote 2
B to C
Undefined
E
Remote 2
F
Undefined
Set the number of connected slave stations. Up to 8 units can be
connected. 1 to 8 is available to the number of units.
Details
Refresh time = 0.156 ms × Number of master occupancy channels
Refresh time = 0.338 ms × Number of master occupancy channels
Position
Remote refresh mode selection
Low-speed refresh mode (for low-speed remote slave module)
High-speed refresh mode (for high-speed EH-TRMLE)
Position
Compatible mode selection
Position
Input hold function selection
Disable the input hold function (Turn off all input data from
slave at the communication error.)
Enable the input hold function (At the communication error,
input data from the slave is held with last data received
properly.)
Position
Selection of insertion / non-insertion of terminator
Not insert a built-in terminator. (in unnecessary case because
it is not both ends of a twist-pair cable)
Insert a built-in terminator. (when it is both ends of a
twist-pair cable)
3 – 2
Details of setting
Remarks
-
Maximum I/O points 128 points / master
Also available to EH-CPU104A/208A/316A
Maximum I/O points 256 points/master
Available
to
EH-CPU516/548
EHV-CPU16/32/64/128
-
In the case of mix with EM/EM-II station
-
Undefined
Compatible mode
and
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