Table of Contents
Advertisement
Range of
Parameter
values
Activate
selection of byte
0 – 1
format when
transmitting via
RS- 485
Byte format
when
0 – 5
transmitting via
RS-485
Waiting time for
starting the
0 – 60000
MODBUS RTU
response, ms
Enable ASCII
exchange mode
0 – 1
in MODBUS
network
Response time
0 –
for subsequent
Modbus ASCII
60 000
character, ms
Connecting to data collection server
Mode of
connection to
0 – 4
the server for
data collection
Server
0 – 65535
connection port
Time of waiting
0 – 3600
for response
from the server, s
Waiting time be-
0 –
fore reconnecting
30 000
to the server, s
Enable server
0 – 1
address setting
with a text string
Table 5.8 Continued
EM-481
16
-
Factory
setting
It is used in case of data exchange between the devices via
RS-485, the same value for the devices on the same bus-
1
bar.
0 – unused, byte is completed with 2 stop bits;
1 – Byte format is selected in register 461.
It is used in case of data exchange between the devices via
RS-485 only if byte format selection is activated.
The same value for the devices on the same bus-bar.
0 – "EVEN" – 1 parity bit and 1 stop bit;
1 – "ODD" – 1 parity bit and 1 stop bit;
2 – «0» ("SPACE") – 1 zero bit and 1 stop bit;
5
3 – «1» ("MARK") – 1 unit bit and 1 stop bit (similar to mode
with two stop-bits);
4 – "ABSENT" - no parity bit, 1 stop bit;
5 – "AUTO-STOP" - no parity bit, 2 stop bits in the sent bytes, 1
stop bit in the received bytes (in such a case, devices with one
and two stop bits may be connected simultaneously).
It is used for transmissions via RS-485 in RTU mode. After
transmission of query, if the first byte of the response was not
received within this time interval, the waiting for the response is
terminated. The response is always expected to be not less
200
than the silence time between frames (the silence time de-
pends on the transmission speed and is equal to the
transmission time of 3.5 bytes, or 1.75 ms for speeds above
19200 bps).
Exchange mode via RS-485, the same value for all units on
the same bus-bar.
0 – RTU exchange mode (format: 1 start bit, 8 data bits, 2
stop-bits, parity bit, and stop bit or only 1 stop bit - total from
0
10 to11 bits);
1 – ASCII exchange mode (format: 1 start bit, 7 data bits, 2
stop-bits or parity bit and stop bit - total is 10 bits). The non-
standard byte formats (register 461, values 4 and 5) are not
available in this case, format 3 (2 stop bits) is used instead.
It is used in case of data transfer via RS-485 in ASCII mode. If
you receive a response, if the next byte of the response was
1000
not received within this time interval, then the response waiting
is stopped. Waiting is always not less than the transmission
time of one character (depends on the transmission speed).
0 – connection to server is not used;
1 – It sets and supports connection to the server through the
specified port of the server connection (port on the server side)
through any of the available interfaces;
1
2 – it is expected to connect from the server through the
specified server connection port (port on the EM-481 side);
3 – similar to 1, but only via Ethernet;
4 – similar to 1, but only via GPRS.
The port to which the party is addressed, making connection
20502
between EM-481 and the server (see reg. 465).
0 – the server silence time is not limited;
1–3600 – max. time of server silence after which the
120
connection will be stopped and must be remade again.
It is used when connecting to the server (except mode "2").
15
After losing connection to the server, the reconnection will be
performed after the specified waiting time.
It is used when connecting to the server (except mode "2"):
0 – connection is made to the server with fixed IP-address set
in the registers 470 – 473;
1
1 – connection is made to the server with the name set in the
registers 474–509.
-
Description
Address
460
461
462
463
464
465
466
467
468
469
NOVATEK-ELECTRO
Advertisement
Table of Contents
