Ditel MICRA-M Manuel De L'utilisateur page 91

RS2 / RS4 OUTPUT OPTIONS
Introduction
The RS232C output option consists of an additional card (reference RS2) that is installed in the M2 plug-in connector
of the instrument's main board. The card incorporates one 4 wires telephone socket with output at the the rear of
the instrument.
The RS485 output option consists of an additional card (reference RS4 that is also installed in the M2 plug-in con-
nector of the instrument's main board. The card incorporates a 6-pin / 4-contact telephone socked with output at the
rear of the meter.
The serial output permits to construct a communication line through which a master device can request the trans-
mission of data such de display value, setpoint values, peak, valley, tare (or offset in case of thermometers) and to
perform operations such as tare of the display, reset of the peak, valley or tare memories and update setpoint val-
ues..
The output option is totally software configurable as for the transmission rate (1200, 2400, 4800, 9600 ó 19200
Baud), the instrument's address (from 00 to 99), the protocol (ASCII, ISO 1745 and MODBUS RTU).
The operating mode is half-duplex and it normally stands in data reception mode until reception of a message.
A valid data transmission may cause the immediate execution of an action (tare, reset of peak, valley or tare memo-
ries modification of setpoint values) or the transmission of a response from the instrument (display value, one of the
setpoints value, peak, valley, tare / offset). Only the display value can be called up via external contact according
diagram in page 9 of RS2 manual.
From the site web www.ditel.es
KOSMOS instruments to a PC and whole programming, as well as to verify its communication's hard-
ware.
Three communication modes are available; the ASCII mode uses a simple protocol compatible with several DITEL
instruments. The ISO mode, in accordance with the ISO 1745 norm, allows a more effective communication in noisy
environments as it checks the messages validity checking both transmission and reception. And eventually the proto-
col MODBUS RTU
As you will see in the functions table, the protocol ASCII uses 1 or 2 bytes according to the command type and the
protocol ISO 1745 imposes the use of two bytes per command.
RS OUTPUT MENU DIAGRAM
KOSMOS SERIE
can be downloaded the specific software that allows to connect the
www.ditel.es
MICRA-M
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