Moxa TCC-120 Betriebsanweisung PDF herunterladen (Seite 16)

NOTE The TCC-120/120I provides reverse power protection. It

will automatically detect which power wire is negative,

and which is positive.

STEP 3: Wire the Terminal Block

There are two wiring options available for connecting to the

TCC-120/120I’s RS-422/485 terminal block.

Data+

SGND

Data

R+/D+

SGND

T+

2-wire

When using the 2-wire (for

RS-485) wiring option, you will

need to connect three wires

from each of the

TCC-120/120I’s RS-422/485

terminal blocks to the opposite

connections. Connect from

R+/D+ to Data+, from R-/D- to

Data-, and from SGND to

SGND.

Rx+

SGND

Tx+

R+/D+

SGND

T+

4-wire

When using the 4-wire (for

RS-422 or 4-wire RS-485)

wiring option, you will need to

connect five wires from each of

the TCC-120/120I’s

RS-422/485 terminal blocks to

the opposite connections.

Connect from R+/D+ to Tx+,

from R-/D- toTx-, from T+ to

Rx+, from T- to Rx-, and from

SGND to SGND.

2-4 TCC-120/120I User’s Guide

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Moxa TCC-120 Betriebsanweisung Seite 16