Lauda PROLINE Edition X P 12 C, Руководство по эксплуатации

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Proline Edition X heating thermostats
YACE0099 / 10/9/2018
Interface modules
91
8.3.2 Protocol RS-232


The interface operates with 1 stop bit, no parity bit and 8 data bits.

Transfer rate either: 2400, 4800, 9600 (factory setting) or 19200 baud as selected.

The RS-232 interface can be operated with or without hardware handshake,
(RTS/CTS).

The command from the computer must be terminated with CR, CRLF, or LFCR.

The response of the thermostat is always terminated with CRLF.

After each command sent to the thermostat, it is necessary to wait for the reply be-
fore sending another command. This ensures that the sequencing of inquiries and
answers is clear.
CR = Carriage Return (Hex: 0D)
LF = Line Feed (Hex: 0A)
Example: Transfer of setpoint 30,5 °C to the thermostat
Computer Thermostat
„OUT_SP_00_30.5“CRLF


„OK“CRLF
8.3.3 Connecting cable RS-485
Thermostat
9-pin sub-D-socket
Pin Data
1 Data A (-)
5 SG (Signal Ground)
optional
6 Data B (+)


Use screened connecting cables.

Connect screen to connector case.

The connections are galvanically isolated from the rest of the electronics.

Any pins not in use must not be connected!!
An RS-485 bus always requires bus termination
in the form of a termination network which en-
sures a
defined rest status in the high-resistance
phases of bus operation. The bus termination is
as follows:
This termination network is usually incorporated on the PC plug-in card (RS-485).