Inverter-To-Inverter Link Function (Fr-A800-E) - Mitsubishi Electric FR-A820-00046 Instruction Manual

Inverter-to-inverter link function (FR-A800-E)

5.23 Inverter-to-inverter link function (FR-A800-E)
The inverter-to-inverter link function enables communication between multiple inverters connected
by Ethernet in a small-scale system by using the I/O devices and special registers of the PLC function.
The inverter-to-inverter link function is enabled by simply setting Pr. 1124 "Station number in invert-
er-to-inverter link" and Pr. 1125 "Number of inverters in inverter-to-inverter link system".
Pr.
1124
N681
1125
N682
The setting is applied after an inverter reset or power-ON.
Communication specifications
Item
Transmission speed
Connectable units
Topology
Maximum number of links per station
Tab. 5-414: Inverter-to-inverter link function communication specifications
Inverter-to-inverter linkup (LNK) signal
The inverter-to-inverter linkup (LNK) signal is available to check that the master-slave communication
is established.
Master/slave
Master
Slave
Tab. 5-415: Signal ON/OFF condition for LNK signal
To use the LNK signal, set "242 (positive logic) or 342 (negative logic)" in any of Pr. 190 to Pr. 196 (Out-
put terminal function selection) to assign the function to the output terminal.
NOTE Changing the terminal assignment using Pr. 190 to Pr. 196 (Output terminal function selection)
may affect the other functions. Set parameters after confirming the function of each terminal.
5 - 832
Initial
Name
value
Station number in
9999
inverter-to-inverter link
Number of inverters in
inverter-to- inverter link
system
Signal ON condition
The inverter receives a response from all the
slave inverters during initial communication.
The inverter returns a response to the master.
Setting
Description
range
0 to 5 Set the station number for the inverter-to-inverter link function.
9999 Inverter-to-inverter link function disabled
Set the total number of inverters used for the inverter-to-inverter
2 2 to 6
link function.
Description
100 Mbps (Do not use the function at 10 Mbps.)
Master: 1
Slave: up to 5
Star
Output device 16 (2 bytes)
Special register 8 (16 bytes)
Signal OFF condition
The inverter does not receive a response
from a slave in communication.
The inverter detects a signal loss.
The inverter does not receive any request
from the master.
The inverter detects a signal loss.
Parameters