Amtech
11.2
10
11
CAUTION
Separates the communication cable from the main circuit cable and other power cables.
A shielded twisted pair cable should be used for connecting TB1 and the host computer.
Connect the shielded twisted pair cable's shield to control earth.
When connecting the TB1 and shielded twisted pair cable, do not solder the wires, which are
exposed after the sheath is peeled off.
If the communication is distorted and not carried out properly because of noise, etc., connect
a ferrite core, etc., to the cable, and increase the noise resistance.
When connecting several Axpert-Eazy units, connect two wires to each TB1 terminal, and
couple the Axpert-Eazy units. An example of the connection is shown below.
11-3 Connecting the host computer and Axpert-Eazy (1-to-many units)
AXPERT
EAZY
HOST
COMPUTER
(Master)
RS485
AXPERT
EAZY
AXPERT
EAZY
AXPERT
EAZY
TB1 TB1TB1TB1
JP3 JP3 JP3JP3
Shielded twisted cable
The details of the TB1 terminal section are shown below.
TB1
RXCOM
TX
To host computer
or unit
Shielded twisted cable
To next unit
Shielded twisted cable
Shield
Connect shield to control earth
Fig. 11-3
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