Communications Protocol
Append
ix
B
B–10
Command – 04
The 04 command reads the status of the inverter.
The frame format of command 04 follows the
diagrams and specification tables. The transmit
frame has no data field.
The receive frame has an 8-byte data field,
containing values for three trip items (plus a
reserved field).
Trip data is organized as shown. The
table below lists the codes and their
meanings.
Element
Description
Size
Value
STX
Control code (STart of TeXt)
1 byte
STX (0x02)
Node
Node (station) address of inverter
2 bytes 01 to 32
Command
Transmission command
2 bytes 04
BCC
Block check sum code
2 bytes Exclusive OR of Node,
Command, and Data
[CR]
Control code (carriage return)
1 byte
[CR] (0x0D)
Element
Description
Size
Value
STX
Control code (STart of TeXt)
1 byte
STX (0x02)
Node
Node (station) address of inverter
2 bytes 01 to 32
Data
Transmission data
8 bytes (see next table)
BCC
Block check sum code
2 bytes Exclusive OR of Node,
Command, and Data
[CR]
Control code (carriage return)
1 byte
[CR] (0x0D)
Code
Status A Definition
Status B Definition
Status C Definition
00
Initial status
On stopping
—
01
—
On running
Stop
02
On Stopping
On tripping
Deceleration speed
03
On running
—
Constant speed
04
On free-run stop
—
Acceleration speed
05
On jog
—
Forward
06
On dynamic braking
—
Reverse
07
On retry
—
Reverse from forward
08
On trip
—
Forward from reverse
09
On under-voltage
—
Forward start
10
—
—
Reverse start
STX Node
Command
BCC [CR]
Transmit frame format
STX Node
Data
BCC [CR]
Receive frame format
Data field contents
(reserved)
Status C
Status B
Status A
Содержание SJ300 Series
Страница 2: ......
Страница 138: ......
Страница 212: ......
Страница 213: ...Inverter System Accessories In This Chapter page Introduction 2 Component Descriptions 3 Dynamic Braking 6 5 ...
Страница 243: ...Glossary and Bibliography In This Appendix page Glossary 2 Bibliography 6 A ...
Страница 268: ......
Страница 269: ...Drive Parameter Settings Tables In This Appendix page Introduction 2 Parameter Settings for Keypad Entry 2 C ...
Страница 285: ...CE EMC Installation Guidelines In This Appendix page CE EMC Installation Guidelines 2 Hitachi EMC Recommendations 4 D ...
Страница 294: ......