User guide

Usin
g
the Network Options Ethernet Tester
840 USE 115 00 Version 1.0
51
5.5 Reading and Writing Registers
To read re
g
isters, select
Messages
and chose
Read Registers
from the pulldown
menu
or
click on the read re
g
ister button in the toolbar.
T
y
pe in a pollin
g
interval, the first 4
x
re
g
ister
y
ou want to read and the number of
re
g
isters to read. The pollin
g
interval is the number of seconds between
transactions. When t
y
pin
g
the 4
x
re
g
ister number, omit the leadin
g
40 or 400, as in
Fi
g
ure 23 above.
Click
OK
. The re
g
ister values will be displa
y
ed in the window for this connection.
Five values will be listed in each row, with the number of the first re
g
ister at the
be
g
innin
g
of the row.
To write re
g
isters, select
Messages
and choose
Write Registers
from the
pulldown menu
or
click on the write re
g
ister button in the toolbar.
T
y
pe in a pollin
g
interval, the first re
g
ister
y
ou want to write, the number of re
g
isters
to write and data to be written to those re
g
isters. The pollin
g
interval is the number
of seconds between transactions. When t
y
pin
g
the 4
x
re
g
ister number, omit the
leadin
g
40 or 400, as in Fi
g
ure 24 below.
If
y
ou select the
Increment Write Data
box, the value of the data
y
ou have entered
will be increased b
y
one with each transaction. The write data will be displa
y
ed in
the window for this connection.
Figure 23 Read Register Box