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6.6.9 - MODBUS Channels Page
Determines the name of the selected channel with using maximum
12 characters.
Maximum 50 characters long description.
Name:
Description:
Up to 16 MODBUS RTU channels can be configured by this page. Firstly, channel
number is clicked from the left of the screen before starting the configuration. MODBUS
channel process values are transferred from slave MODBUS RTU devices over the
RS-485 port or TCP. RS- 485 serial communication settings can be done from Serial
Port Tab in the
menu. Slot Analog Channel and MODBUS channel have
almost same features except the way channel process values are assigned. While the
former extracts the channel values from certain sensors, the latter uses RS-485 bus or
TCP by querying the slave device with
and
parameters
to get the channel process values. If an error occurs while querying the slave device,
the process value of the relevant channel is set to the configured
HARDWARE
Device Address
Reg. Address
Fault Value.
Only functional for RS-485 connections and determines time out
value in miliseconds. This parameter can be adjusted between 100
and 500 miliseconds.
Connection:
Time Out:
Address:
IP Address:
Function:
Reg. Start Adr.:
Reg. Count:
This parameter determines connection type. When selected as OFF,
the channel is disabled and is closed for message transaction.
Available connections are RS-485 and TCP.
Starting adress of modbus reading query.
This parameter defines modbus slave address of RS-485 modbus
connection and can be set between 1 and 127.
This parameter determines IP address of TCP/IP connection and is
only required for TCP type connections.
Determines the function code which will be used when querying.
03 or 04 can be selected.
Number of register to be read in query.
6.6.9 - MODBUS Channels Page
When the
,
and
parameters are
set to the same values for more than one channel, the
parameter determines the register which will be assigned to channel
process value. By this way, number of transaction can be decrased in
order to increase query frequency by using same transaction for more
than one channel.
Address Reg. Start Adr.
Reg. Count
Index
- Short (Signed 2 Byte), Short (Unsigned 2 Byte),
- Integer (Signed 4 Byte), Integer (Unsigned 4 Byte),
- Long (Signed 8 Byte), Long (Unsigned 8 Byte),
- Float ( 4 byte)
Index:
Reg. Type:
Birim:
Fault Value:
Decimal Point:
Determines the unit.
Determines the position of decimal point. The parameter can be set
as
,
,
or
0 0.0 0.00
0.000
Determines the value of the channel in fault status.
