YASKAWA Varispeed V7 - I;O Message Communications

6. Operating with DeviceNet Communications
59
 I/O Message Communications
The DeviceNet-compatible Inverters use poll command/response mes-
sages for I/O message communications. Select one of the seven sup-
ported I/O instances and transfer I/O data with the master. I/O messages
are always transferred between the Inverter and master at the fixed com-
munications period whether or not there have been changes to the I/O
data.
Basic I/O Instances
This is a standard I/O instance type defined in DeviceNet’s AC Drive
Profile. Four bytes are used for input data and four bytes are used for
output data.
• Input (Master → Inverter) Instance 20 (14 Hex)
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 --- --- --- --- --- Fault
Reset
--- Run
Fwd
1 --- --- --- --- --- --- --- ---
2 Speed Reference (Low Byte)
3 Speed Reference (High Byte)
Data Name Contents
Byte 0,
bit 0
Run Fwd Runs the Inverter forward.
0: Stop.
1: Run forward.
Byte 0,
bit 2
Fault Reset Resets the Inverter from fault status.
0: ---
1: Reset fault.