Emerson ROC827 Manual do Utilizador descarregar pdf (Página 104)

ROC827 Instruction Manual

Issued Mar-06 Communications 5-12

Figure 5-5. EIA-422/485 (RS-422/485) J4 Jumper

Table 5-11. EIA-422 (RS-422) Module

Terminated Not Terminated

Jumper

TER Out Half Full TER Out Half Full

J3 x x

J4 x x

J5 x x

J6 x x

Table 5-12. EIA-485 (RS-485) Module

Terminated Not Terminated

Jumper

TER OUT Half Full TER OUT Half Full

J3 x x

J4 x x

J5 x x

J6 x x

5.9 Dial-up Modem Communications Module

The dial-up modem module interfaces to a Public-Switched Telephone

Network (PSTN) line, and requires a telephone line connection. The

module provides a telephone interface on the host port that is capable of

both answering and originating telephone calls. The module also provides

electronics that conserve power when the phone line is not in use.

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