Modbus map of the relay is found in AQtivate software in
Tools
→
Modbus
map once the con guration
le has been loaded. Please notice that holding registers start from 1. Some masters might start
holding register numbering from 0 instead of 1 which will cause an offset of 1 between the relay and
master.
Table. 6.1.2. - 249. Modbus TCP parameters
Parameter
Range
Description
ModbusTCP enable
[Disabled, Enabled]
Enable setting for Modbus TCP on Ethernet port.
IP port
[0…65535]
IP port used by Modbus TCP. Standard and default port is 502.
Table. 6.1.2. - 250. Modbus RTU parameters
Parameter
Range
Description
Slave address
[1…247]
Modbus RTU slave address for the unit.
Additionally, update interval of measurement updating is adjusted with the following parameters.
Table. 6.1.2. - 251. Modbus measurement update interval setting parameters
Parameter
Range
Step
Description
Current meas update interval
500…
10000ms
5ms
Measurement update interval of all current related measurements.
Voltage meas update interval
500…
10000ms
5ms
Measurement update interval of all voltage related measurements.
Power meas update interval
500…
10000ms
5ms
Measurement update interval of all power related measurements.
Impedance meas update
interval
500…
10000ms
5ms
Measurement update interval of all impedance related
measurements.
These parameters can be found in menu
Measurement
→
Measurement
update. These parameters do
not affect to the operation time of protection functions. These parameters only affect to the frequency
of measurement reporting to Modbus.
6.1.3. ModbusIO
ModbusIO can be selected for communication on available serial ports. ModbusIO is actually a
ModbusRTU master implementation dedicated for communication with serial ModbusRTU slaves such
as RTD inputs modules. Up to 3 ModbusRTU slaves can be connected to the same bus polled by the
ModbusIO implementation. These are named IO Module A … IO Module C. Each of the modules can
be con gured using parameters in the following table.
Parameter
Range
Description
IO Module[A,B,C] address
[0…247]
Modbus unit address for the IO Module. 0 = not in use.
Module[A,B,C] type
[ADAM-4018+]
Type selection for module
Channels in use
[Ch0…Ch7]
Channel selection for the module.
For each of the 8 channels of the IO module connected thermocouple can be selected.
T.C. type
[+-20mA,Type J, Type K, Type T, Type E, Type R, Type S]
Thermocouple type setting.
AQ-F255
Instruction manual
Version: 2.00
© Arcteq Relays Ltd
302