Addi-Data ADDICOM PA 7300, Техническое описание

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PA 7300 Technical description Chapter 1
2
The intended purpose of the board depends on the operating mode used.
Table 1-1: Intended purpose depending on the operating mode
Module
1 Operating
mode
Port
configuration
Distance
between
transmitter and
receiver
2
Environment
PM232
RS232
modem control signals
connected on the board
or externally to the
connector
30 m industry
PM232-G
RS232
modem control signals
connected on the board
or externally to the
connector
30 m
noisy
industrial
environment
PMTTY
20 mA
Current loop
current flows
in rest state
1 km very noisy industrial
environment
PM422
RS422 1.2 km noisy industrial
environment
PM422-G
RS422 1.2 km
very noisy industrial
environment
PM 485
RS485
automatic transmitter
control
200 m industry
transmitter control
DTR, RTS or databit
1.2 km noisy industrial
environment
PM485-G RS485 automatic transmitter
control
200 m industry
transmitter control
DTR, RTS or databit
1.2 km very noisy industrial
environment
Connection to the peripheral
with a shielded cable, twisted in pairs.
Connect the peripheral cable so that the differential lines described in the
connector pin assignment with "+" and "-" are twisted in pairs.
Operating mode RS232: the signal lines are to be twisted in pairs with GND.
The housing of the peripheral connector
- is to be firmly screwed together with the shield of the cable
- is to assure a low-resistance connection (< 100 m
Ω
) between the shield and
the housing of the PC.
The shield of the cable is to be earthed on both ends.
The use of the board according to its intended purpose includes observing all
advices given in this manual and in the safety leaflet. Uses beyond these
specifications are not allowed. The manufacturer is not liable for any damages
which would result from the non-observance of this clause.
1
PMxxx-G : ex. PM232-G means module for the
mode
RS 232 with option G (galvanic isolation)
PMTTY means module for the
mode
20 mA current loop. It is isolated as a standard
2 The max. lenghts are for standard interface cables