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4.6 Module Replacement
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4.6 Module Replacement
When changing the switch settings on a module or when it has failed, replace the module
4.6.1
10BASE5 (EN611, EN621, EB621)
(1) Switch off the base unit and the +12 VDC power supply. Check the LED indications
to make sure that the power is off.
(2) Disconnect the +12 VDC power cable from the connector CN2 on the EN6 or EB6
module to be replaced.
(3) Remove the two M3 screws on the connector clamp that fastens the AUI cable
connector, using a Phillips screwdriver.
(4) Push up the slide lock to unlock the D-sub connector to which the AUI cable is
connected, then disconnect the AUI cable.
If a double Ethernet module (EN621) is used, disconnect the AUI cables from both
buses A and B.
(5) If an Ethernet module (EN621/EB621) for dual line configuration is used, disconnect
the modular connector CN1 on the module to be replaced.
(6) Set the switches on the new EN6 in the same way as those on the removed EN6.
(No switch setting is necessary on the EB6.)
(7) After installing the new EN6 or EB6 in the base unit, connect the cable to it. For how
to install new EN6 and EB6 modules, refer to [4.2 Ethernet Cable Connection] and
[4.5 12 VDC Power Cable Connection] in the preceding section on installation.
(8) 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 EN6 module. (Download form
Ethernet is not possible before downloading the parameters.)
(9) After downloading, switch off the base unit connected EN6 module again.
(10)Confirming the base units power is off, connect cables.
Caution
• Before replacing a module, switch off the base unit and the +12 VDC power supply, and
make sure that power is off.