Siemens KS7 Series Especificações descarregar pdf (Página 121)

CP 523 Communications Mode

Hardware handshake (HW handshake)

This parameter is only significant for the RS-232-C (V.24) interface.

If you set HW handshaking ON, the "RTS", "CTS", "DTR" and "DSR" control signals of the RS-232-C

(V.24) interface are evaluated. The XON/XOFF protocol is not possible.

The default is HW handshake OFF, i.e. the control signals are not evaluated.

The HW handshake signals are neither evaluated nor affected in 3964(R) mode.

Parameter for XON/XOFF character

If you use the XON/XOFF protocol, you have a free choice of the XON/XOFF character. ASCII code

provides the codes 11

(DC1) for the XON character and 13

(DC3) for the XOFF character. You may

not use the same values for the XON and XOFF characters.

Data transfer is executed with the XON/XOFF protocol when valid values are used for XON and

XOFF.

XON/XOFF is not possible in Transparent mode (mode 1) or 3964(R) mode (mode 3).

Reader's note:

Section 7.3.1 is arranged so that the parameter list (Table 7-2) and the parameter

descriptions which follow it are succeeded by the subsections

•

Initializing TRANSPARENT MODE (page 7-16)

•

Initializing INTERPRETIVE MODE (page 7-18)

•

Initializing 3964(R) mode (page 7-21)

When you have chosen the mode you want to use, you can limit your reading to the appropriate

subsection.

The description of parameter block 9 applies for all modes, and was therefore presented only once

on page 7-42.

EWA 4NEB 811 6044-02a

7-15

1 2 ... 116 117 118 119 120 121 122 123 124 125 126 ... 256 257

Sem comentários

Siemens KS7 Series Especificações Página 121