Selecting Cooling Fan Operation; Using Memobus (Modbus) Communications - YASKAWA VS-606V7 Series Instruction Manual

• Selecting Cooling Fan Operation

In order to increase lifetime, the cooling fan can be set to operate only when inverter is
running.
n039 = 0 (factory setting) : Operates only when inverter is running.
1

• Using MEMOBUS (MODBUS) Communications

Serial transmission is available with VS-606V7 using programmable controller
(MEMOCON series) and MEMOBUS.
• MEMOBUS (MODBUS) communications
MEMOBUS system is composed of a single master (PLC) and slaves (1 to 31
VS-606V7 units).
Communication between master and slave (serial communication) is controlled
according to the master program with the master initiating communication and the
slave responding.
The master sends a signal to one slave at a time. Each slave has a pre-registered
address No., and the master specifies the number and conducts signal
communication. The slave receives the communications to carry out designated
functions and reply to the master.
• Communications specifications
Interface RS-422, RS485
Synchronization Asynchronous (Start-stop synchronization)
Baud rate: Selected from 2400/4800/9600/19200 bps
Communication Data length: 8bit fixed
parameters Parity: Selected from even/odd/none
Stop bits: 1bit fixed
Communication
MEMOBUS (MODBUS) (RTU mode only)
protocol
Max. number of
inverters that can be 31 units (When using RS-485
connected
92
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(Continuous operation for 1 minute after
inverter is stopped.)
: Operates with power ON.