YASKAWA Varispeed V7 Instruction Manual page 62

Data Name
Byte 0, Running 1
bit 2 (Fwd)
Bytes Speed
2 and 3 Actual
* 1. The speed scale can be set with AC/DC Drive object attribute 16 through
explicit message communications.
* 2. When using the Speed Actual monitor, always set the Number of Motor
Poles (2 to 39) in Inverter constant n035 (Selecting Setting/Display Units
of Frequency Reference).
Extended I/O Instance (Factory Setting)
This is a standard I/O instance type defined in DeviceNet's AC Drive
Profile and it is the initial factory setting for I/O instances. Four bytes
are used for input data and four bytes are used for output data.
• Input (Master → Inverter) Instance 21 (15 Hex)
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3
0 ---
1 ---
2 Speed Reference (Low Byte)
3 Speed Reference (High Byte)
6. Operating with DeviceNet Communications
Indicates the Inverter's operating status.
0: Stopped, operating in reverse, or
applying DC injection braking
(Reverse RUN command ON).
1: Operating forward or applying DC
injection braking (Reverse RUN com-
mand OFF).
Indicates the Inverter's speed.
Monitored speed data:
Monitored frequency (r/min) × 2
SS
( : Speed scale
For example, when the monitored speed
data is 03E8 Hex and the speed scale is
0:
Monitored frequency = 03E8 Hex/ 2
1,000/ 2
Net Net ---
Ref Ctrl
--- --- ---
Contents
*1
)
0
= 1,000 r/min.
Bit 2
--- Fault
Reset
--- ---
SS
0
=
Bit 1 Bit 0
Run Run
Rev Fwd
--- ---
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