Alstom MX3EG1A - 4.14 RS485 serial communication on MODBUS protocol; 4.15 Oscilloperturbography

pag. 12
MDE/A133 2295 001
MX3EG1A
4.14
RS485 serial communication on
MODBUS protocol
Devices with 2.00 and higher software versi
ons can feature three
different kinds of
communicatio
n:
-
no c
om
mu
ni
ca
ti
on b
oa
rd
(version MX3EG1A .11 and .12);
-
L
o
n
W
o
r
k
s
(TM)
communication board
(version
MX3EG1A
.61
and
.62);
-
Mod
bus
com
mu
nic
ati
on
boa
rd
(version MX3EG1A .71 and .72);
The type of communication board installed is automatically
recognized.
In the event of
device with LonWorks
(TM)
communication board it
is necessary to carry out
the connection as provided for and set
all the connected devices. This is automatically possible by
connecting a PC equip
ped with PCLTA10 or SLTA10 board to a
CORMOX2 programme.
In the event of
device with Modbus communication board, each
relay can be set
through the front interface
or
through the
IRMA2
programme installed on PC connected to the front
serial port. The
configuratio
n can be carried out even on
relays which are still
connected to one another and can be pre-set on files together
with other information.
The configuration of the Modbus communication board requires
the following parameters:
P
A
R
A
M
E
T
E
R
V
A
L
U
E
Speed
300 Baud
600 Baud
1200 Baud
2400 Baud
4800 Baud
9600 Baud
19200 Baud
38400 Baud
Parity
NONE
EVEN
ODD
Data bits
7
8
Stop bits
1
2
Address
1 - 255 (0
broadcast)
These parameters can be modified in loco or from the network.
To this
aim, the
following
extension
of the
'RELAY DATA'
has
been added :
[MX3EG1A ]
relay type
[Sw
Vers
2.00/01]
software version
ñ ò
[PLANT IDENTIFIER]
[GenPan ]
ð
plant identifier
ñ ò
[SPEED
38400
Bb
]
ð
speed setting
[PARITY
NONE
]
ð
parity setting
ñ ò
[DATA
BIT
8
]
ð
data bit setting
[STOP
BIT
1
]
ð
stop bit setting
ñ ò
[ADDRESS
111
]
ð
address setting
[
]
Upon request, the message describing documents referrin
g to the two
different versions, LonWorks
(TM)
and Modbus, can be supplied.
4.15 Oscilloperturbography
The device can record the course of the
two input voltages - Ub
and Ug - and the logic states of the: 8 LEDs, 5 auxiliary relays and
5 digital inputs. The total recording time equals 2.5s, and can be
divided into variable time before start-up and variable time
after
start-up. The oscillopertu
rbography function can be started for:
remote control
(from PC or
network) of Start LB
or Start DB,
remote
control of
Stop,
synchroniza
tion
sequence correctly
concluded, synchronization sequence failed, digital input enabli
ng.
The selection of the start parameters, the graphic display and the
oscilloperturbography functio
n reset can be made through PC or
network. The function reset can also be
enabled by interrupting
the auxiliary voltage for a short time.