West Control Solutions Pro-16 - Manual (Page 73)

Special
functions
9499-040-93811 / 59537-1 Page 73 of 88 Pro-16
9.3 KS 20-1 as Modbus-Master
This function is only selectable with the BlueControl engineering tool
Additions othr (only visible with BlueControl!)
Name Value range Description Default
MASt Controller is used as Modbus master 0
0 Slave
1 Master
Cycl 0...200 Cycle time [ms] for the Modbus master to transmit its
data to the bus. 60
AdrO 1...65535 Target address to which the with AdrU specified data is
given out on the bus. 1
AdrU 1...65535 Modbus address of the data that Modbus master gives
to the bus. 1
Numb 0...100 Number of data that should be transmitted by the
Modbus master. 0
The controller can be used as Modbus master (
ConF / othr / MASt = 1 ).
The Modbus master sends its data to all slaves (broadcast message, controller adress 0). It
transmits its data (modbus adress AdrU) cyclic with the cycle time Cycl to the bus. The slave
controller receives the data transmitted by the master and allocates it to the modbus target
address AdrO.
If more than one data should be transmitted by the master controller ( Numb >
1) , the modbus
address AdrU indicates the start address of the data that should be transmitted and AdrO
indicates the first target address where the received data should be stored. The following data
will be stored at the next available modbus address.
With this it is possible e.g. to specify the process value of the master controller as set-point for
the slave controllers.