Chapter 4 Explanation of Functions
4 - 13
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(2) Positive and negative responses
(i) Positive response
- Response frame
Frame format
STX Station
No. ACK
BCC
CR
Description
Data
size
Setting
STX
Control code (Start of TeXt)
1 byte
STX (0x02)
Station No.
Station number of control-target
inverter
2 bytes
01 to 32
ACK
Control code (acknowledgement)
1 byte
ACK (0x06)
BCC
Block check code
2 bytes
XOR of the items from "Station No." to "ACK."
See Item (3) of this section.
CR
Control code (Carriage Return)
1 byte
CR (0x0D)
(ii) Negative response
- Response frame
Frame format
STX
Station No.
NAK
Error code
BCC
CR
Description
Data
size
Setting
STX
Control code (Start of TeXt)
1 byte
STX (0x02)
Station No.
Station number of control-target
inverter
2 bytes
01 to 32
NAK
Control code (negative
acknowledgement)
1 byte
NAK (0x15)
Error code
Content of communication error
2 bytes
See Note 13.
BCC
Block check code
2 bytes
XOR of the items from "Station No." to "Error
code." See Item (3) of this section.
CR
Control code (Carriage Return)
1 byte
CR (0x0D)
Note 15: Error codes
Error code
Description
01H Parity
error
02H
Sum check error
03H Framing
error
04H Overrun
05H Protocol
error
06H
ASCII code error
07H Receiving-buffer
overflow
08H Reception
timeout
- -
- -
11H Command
error
12H -
13H Execution
disabled
14H -
15H -
16H Parameter
error
17H -
If a command is broadcasted to all inverter stations, no response will be returned to the external control
system.
Summary of Contents for SJ700-055HFF2
Page 15: ...Contents xiii Appendix Appendix A 1 Index Index Index 1 ...
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Page 43: ...Chapter 2 Installation and Wiring 2 21 ...
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Page 51: ...Chapter 3 Operation 3 3 ...
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Page 258: ...Chapter 7 Specifications SJ700 550 LFF2 LFUF2 5 Cable hole φ41 7 6 ...
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