Establishing a connection
Condition
■
Initial commissioning was performed
.
1. Connect the TruConvert System Control to the Modbus mas-
ter with an Ethernet cable.
2. To switch on the system control and the modules: switch on
the 24 V supply voltage.
The PCS (Power Conversion System) is ready for communica-
tion via Modbus.
Addressing modules directly in Modbus
register
Within a configuration consisting of the system control, multiple
AC-DC modules and multiple DC-DC modules, it is possible to
address a specific module directly in the Modbus register. To do
so, the address of the module must be specified in the "Slave-
ID" field of the Modbus register.
Structure of the module address ("Slave-ID"):
■
The slave ID has max. 3 digits (0 to 169).
■
Slave ID = 1 to 16: The command is transmitted to the
explicitly named slave (AC-DC module).
■
Slave ID = 0: The command is transmitted to all connected
slaves.
■
Accesses to a slave register with slave IDs > 16 are
ignored.
■
Addressing of subslaves (DC-DC modules):
−
Slave ID = (slave number x 10) + subslave number: The
command is transmitted to the explicitly named subslave.
−
Slave ID = 0: The command is transmitted to all con-
nected subslaves.
−
Accesses to a subslave register with slave IDs < 10 or >
169 are ignored.
"Slave-
ID"
Register
for
Slave no.
Sub
slave no.
Description
3
Slave
3
–
To slave 3.
0
Slave
0
–
To all slaves.
14
Subslave
1
4
To subslave 4 from
slave 1.
48
Operation
2020-06-10
A67-0141-00.BKEN-
001-05
