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4-68
4-2 Function Mode
4
Func
tions
CRC-16 Calculation Example
<Header and Trailer (Silent Interval)>
• Wait time between receiving the query from the master and the response by the Inverter.
• Be sure to provide 3.5 characters (24 bits) for wait time. If the length does not reach 3.5 characters,
the Inverter does not respond.
• The actual communication wait time is the total of the silent interval (3.5-character length) and
C078 (communication wait time) setting.
Message Configuration: Response
<Total Communication Time>
• The time between receiving query and the response by the Inverter is the total of the silent interval
(3.5-character length) and C078 (communication wait time) setting.
• When sending another query to the Inverter after receiving the response from the Inverter, be sure
to provide the silent interval length (3.5-character length or more) at the minimum.
<Normal Response>
• If the query is the loopback function code (08h), the Inverter sends back a response of the same
content as the query.
• If the query contains a function code of writing into the holding register or coil (05h, 06h, 0Fh, 10h),
the Inverter sends back the query as it is in response.
• If the query contains a function code of reading the holding register or coil (01h, 03h), the Inverter
makes the slave address and function code the same as the query and attaches the read data to
the query.
CRC-16
calculation
CRC
*1
= FFFFh
CRC
*1
Hi
Lo
CRC register (2 bytes)
Target data
Exists
All target data
completed
Interchange the Hi and Lo
bytes of CRC
*1
Completed
CRC
*1
= CRC
*1
XOR target data
8-bit shift
Completed
Bits left
CRC
*1
= Shift CRC
*1
by 1 bit
to the right
0
1
Overflow bit
after shift
CRC
*1
=CRC
*1
XOR A001h
Shift by 1 byte against target data
Summary of Contents for SYSDRIVE 3G3MX-A2002
Page 1: ...Cat No I559 E1 01 USER S MANUAL SYSDRIVE MXSERIES Multi function Compact Inverter...
Page 17: ...Chapter 1 Overview 1 1 Functions 1 1 1 2 Appearance and Names of Parts 1 3...
Page 24: ......
Page 25: ...Chapter 2 Design 2 1 Installation 2 1 2 2 Removing and Mounting Each Part 2 5 2 3 Wiring 2 10...
Page 90: ......
Page 91: ...Chapter 4 Functions 4 1 Monitor Mode 4 1 4 2 Function Mode 4 5...
Page 180: ......
Page 181: ...Chapter 5 Maintenance Operations 5 1 Special Display List 5 1 5 2 Troubleshooting 5 5...
Page 188: ......
Page 189: ...Chapter 6 Inspection and Maintenance 6 1 Inspection and Maintenance 6 1 6 2 Storage 6 7...
Page 212: ...7 15 7 5 Options 7 Specifications 3G3AX RBU41 95 75 2 5 208 218 5 145 35 100 5...
Page 230: ......
Page 231: ...Appendix Appendix 1 Parameter List App 1 Appendix 2 Product Life Curve App 17...
Page 249: ...INDEX...
Page 252: ......