T i t l e
Drawing
No.
Optical Data Transmission Device for Ethernet
EWF-0EA/B-N Specification
C-42-04433
7
／
9
mode. During power supply, mode is set according to switch state.
Mode switching position
The possible data communication combinations are as follows
A Type or
B Type
B Type or
A Type
Communication
During light
interruption
LAN link
During light
interruption
emission state
Normal mode
Normal mode
Possible
Link connected
Emits on both side
Master mode
Master mode
Possible
Link disconnects
Emits on both side
Master mode
Slave mode
Possible
Link disconnects
Emission OFF of
Slave only
Slave mode
Slave mode
Not possible
Both link does not
connects
Does not emits on
both side
*Do not use other operation mode combination than above. It may be the reason of data communication
failure.
In normal mode only, even the communication is interrupted LAN side link will not be disconnected.
While using in the Ether CAT network, make sure EWF connecting to the master side should be in master
mode. EWF connecting to the slave should be in the slave mode.
During EWF optical adjustment, make sure to use as master mode or normal mode as a pair
(In sleep mode, if LAN link is not ON, laser does not emits.)
Each mode operation is as the following flow chart
Master
Slave①
Slave②
Red:
Master mode
Blue
: Slave mode
EWF
・・・
・・・
Master mode
（
M
）
Slave mode
（
S
）
Normal mode
（
N
）
EWF
