6F8C0878
57
4.5 Module Replacement
4
4.5.3
100BASE-TX/10BASE-T (EN751, EN751A, EN761, FN711)
(1) Switch off the base unit. Check the LED to make sure that its power has been cut off.
Hold down the tab of the modular connector connected to the module, and
disconnect the category 5 twisted pair cable. If you are using a dual Ethernet module
system (EN761), disconnect the same form both lines A and B.
(2) Loosen the M4 screws on top and bottom of the module with a Phillips screwdriver,
and remove the module along the module guide of the base unit.
(3) Set the switches on a new module in the same way as those on the removed module.
(4) Install the new module in the base unit and connect the category 5 twisted pair cable
to it. For how to install a new module, refer to the instructions for Ethernet cable
connection described in the preceding section on installation.
(5) It is necessary that network parameters are downloaded, when [Setting from Tool] is
used or multicast address setting is done. Download the parameters with connecting
Engineering Tool to serial communication port (Tool) of EN7 module. (Download form
Ethernet is not possible before downloading the parameters.)
(6) After downloading, switch off the base unit connected EN7 module again.
(7) Confirming the base unit’s power is off, connect cables.
Figure 4-11 Replacing 100BASE-TX/10BASE-T Modules (EN751, EN751A, EN761, FN711)
CAUTION
The backup memory in the EN751, EN761, and FN711 receives power supply from the power
module.
If these modules are removed from the base unit, therefore, the memory will lose its backup
data. Save important data in advance using the Engineering Tool.
AB
CDE
F
0
1
2
3
45
6
7
8
9
AB
CDE
F
0
1
2
3
45
6
7
8
9
Base unit module guide
Base unit
EN7 module
(EN751, EN751A, EN761, FN711)
Remove after making sure that the
basic unit has been switched off.
Hold down modular
connector tab and pull out
the cable.
Содержание 3000 series
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