Setting Ezcom - Hitachi WJ Series User Manual

Chapter 11
11.4.2

Setting EzCOM

 What is the concrete setting of the Inter-inverter communication function (EzCOM) between
Q
inverters?
 In the Inter-inverter communication function (EzCOM), by switching each inverter connected
A
with communication to a master inverter, mutual communication is performed only between
several inverters without external control equipments such as PCs or PLCs.
 During EzCOM communication, each inverter shares the roles of "Administrator inverter",
"Master inverter" and "Slave inverter". For "Administrator inverter" and others, the setting item
changes. Refer to the following items and set them appropriately for each of the inverters
constituting EzCOM.
■ Setting item of administrator inverter (Node address 1)
Code
RS485 communication
[C072]
node address
RS485 communication
[C096]
mode selection
EzCOM start node
[C098]
address
EzCOM end node
[C099]
address
EzCOM start method
[C100]
selection
Related to EzCOM write
[P140]
data
to
[P155]
Parameter
[C001]
Input Terminal Function
to
Selection
[C007]
■ Setting items of master inverter (station No.1 to 8)
Code
RS485 communication node
[C072]
address
RS485 communication mode
[C096]
selection
[P140] EzCOM number of data
[P141] EzCOM destination address 1
[P142] EzCOM destination register 1
[P143] EzCOM source register 1
[P144] EzCOM destination address 2
[P145] EzCOM destination register 2
[P146] EzCOM source register 2
[P147] EzCOM destination address 3
[P148] EzCOM destination register 3
[P149] EzCOM source register 3
[P150] EzCOM destination address 4
[P151] EzCOM destination register 4
[P152] EzCOM source register 4
[P153] EzCOM destination address 5
[P154] EzCOM destination register 5
[P155] EzCOM source register 5
Item
Set the administrator inverter to node address 1.
Inter-inverter communication function (EzCOM) is
used (Administrator inverter)
Set the start node address of the master inverter.
Set the end node address of the master inverter.
Activation by input terminal function "EzCOM
activation [ECOM]"
Always communication
The administrator inverter can also send data as a
"Master inverter". Refer to "Setting items of master
inverter" in the following table.
EzCOM activation [ECOM]:
When "[ECOM] terminal (00)" is set to [C100],
EzCOM communication is performed when this
input terminal is turned ON.
Item
Set [C098] to [C099] to the node
address of the master inverter for
EzCOM communication.
Use Inter-inverter communication
(EzCOM)
Sets the number of write operations of
the holding register.
Set the node address to write data to,
the holding register number, and the
holding register number of the write
data of the own address. Up to 5 sets
can be set.
* For the destination register and
source register, specify a register
address that is decremented by -1
from the register number.
11-4-2
RS485 Communication
Description
Description
Data
1
02
1 to 8
1 to 8
00
01
-
81
Data
1 to 8
01
1 to 5
1 to 247
0000h to FFFFh
0000h to FFFFh
1 to 247
0000h to FFFFh
0000h to FFFFh
1 to 247
0000h to FFFFh
0000h to FFFFh
1 to 247
0000h to FFFFh
0000h to FFFFh
1 to 247
0000h to FFFFh
0000h to FFFFh