Toshiba Tosvert-130 Installation Manual page 35

Example #3:
Using the example PLC ladder program listed previously, and using the Read command, read the
current and output voltage from inverter on node 4.
•
Set the MSTR control registers to the following settings:
Address Description
40001 MSTR Function
40002 Error Code
40003 Number of consecutive registers to read
40004 Starting Register Address in G3
40005 Destination Node
40006 Routing Path
•
The read command is initiated by closing internal relay 1(on positive edge). The data should
now appear on registers 40100 (Output current) and 40101 (Output Voltage). The current will
be the output current displayed as percent of inverter full load amps. The voltage on 40101 will
be a percent of inverter rating (230/460/575) times 10.
Example #4:
The following G3 com registers can be read globally from any of the 31 network nodes:
G3 Com Register
Output Frequency Monitor
Status
Output Current Monitor
Output Voltage Monitor
Using the example PLC ladder program listed previously, and using the global read command,
read status, frequency, output current, and output voltage on inverter at node 5.
•
Set the MSTR control registers to the following settings:
Address Description
40001 MSTR Function
40002 Error Code
40003 Number of consecutive registers to read
40004 Starting Register Address in G3
40005 Destination Node
40006 Routing Path
• Closing internal Relay 1(positive edge) initiates modbus+ communications and a read is done
on node 5 global data.
•
From the following data table we find that the addressing for node 2.
•
The node 5 inverter status can be derived
ADDRESS DESCRIPTION
40100 Frequency
40101 Status
40102 Output Current
40103 Output Voltage
Register Setting
2
read only (see section 8.3)
2
7 (address of first parameter)
4
1
Register No.
05
06
07
08
Register Setting
6
read only (see section 8.3)
don't care
don't care
5
1
DATA FORM
frequency X 100
see table below
percent of inverter full load
percent of inverter rating x 10
from the following table:
34