Lauda LOOP 100, Руководство по эксплуатации

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5.11 RS 232 interface
5.11.1 Cable and test of the RS 232 interface
Computer Thermostat
Signal 9-pin sub-D socket 25-pin sub-D socket 9-pin sub-D socket Signal
With hard-
ware hand-
shake
Without
hardware
handshake
With hard-
ware hand-
shake
Without
hardware
handshake
With hard-
ware hand-
shake
Without
hardware
handshake
RxD 2 2 3 3 2 2 TxD
TxD 3 3 2 2 3 3 RxD
DTR 4 20 4 DSR
Signal
ground
5 5 7 7 5 5 Signal
ground
DSR 6 6 6 DTR
RTS 7 4 7 CTS
CTS 8 5 8 RTS
Take the following information into account:

With hardware handshake: When connecting a thermostat to the PC,
use a 1:1 and not a null modem cable. The RS 232 interface can be con-
nected directly to the PC using a 1:1 contacted cable.

Without hardware handshake: Set the corresponding operation mode on
the PC. Use protected connection lines. Connect the protective screen
with the connector shell. The lines are galvanically separated from the
rest of the electronics. Do not connect unassigned pins.

It is easy to check the RS 232 interface when it is connected to a PC
with a Microsoft Windows operating system.
For Windows ® 3.11 with the program "Terminal".
For Windows ® 95/98/NT/XP with the program "HyperTerminal".
For operating systems Windows Vista, Windows 7, and Windows 8 "Hyper-
Terminal" is no longer part of the operating system.

Terminal programs are available on the Internet as freeware. These pro-
grams offer features similar to "HyperTerminal" (for example PuTTY).
Search query "serial port terminal program".
5.11.2 Protocol RS 232
Take the following information into account:

Connection to SUB-D socket 9-pin

The interface works with 1 stop bit, without a parity bit and with 8 data
bits.

Transmission speed alternately: 2400, 4800, 9600 (factory setting) or
19200 bauds.

The RS 232 interface can be operated with AND without hardware
handshake (RTS/CTS). In order to do so, Pin 4 (DSR) and Pin 6 (DTR)
and Pin 7 (CTS) and Pin 8 (RTS) must be connected with a bridge.
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