10.6 MEMOBUS/Modbus Communications
YASKAWA
SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
747
Note:
The number of bytes set in the command message set the data quantity × 2 during the command message.
Register status
bit 0
Data in register 1 selected with
H5-25
1: Successfully read the register
0: Register read error
bit 1
Data in register 2 selected with
H5-26
1: Successfully read the register
0: Register read error
bit 2
Data in register 3 selected with
H5-27
1: Successfully read the register
0: Register read error
bit 3
Data in register 4 selected with
H5-28
1: Successfully read the register
0: Register read error
bit 4
Not used
bit 5
Not used
bit 6
Not used
bit 7
Not used
■
Reading the Contents of Non-Consecutive Holding Registers
The bypass uses function code 67 (Hex.) and subfunction code 010D (Hex.) to read data with a maximum of 120
holding registers.
You must give the holding register number from which to read separately.
shows example messages when you read the frequency reference and torque limit from the bypass for
slave 1.
uses these specified holding registers data for the examples.
•
0040H:
U1-01 [Frequency Reference]
= 60.00 Hz (6000 = 1770H)
•
0046H:
U1-07 [DC Bus Voltage]
= 635 VDC (635 = 027BH)
Table 10.27 Message Example When Reading the Contents of Non-Consecutive Holding Registers
Byte
Command Message
Response Message (when normal)
Response Message (when there is a fault)
Setting Data
(Hex.)
Setting Data
(Hex.)
Setting Data
(Hex.)
0
Slave address
01
Slave address
01
Slave address
01
1
Function Code
67
Function Code
67
Function Code
E7
2
Subfunction
Code
Upper
01
Subfunction
Code
Upper
01
Error Codes
02
3
Lower
0D
Lower
0D
CRC-16
Upper
EA
4
Data Qty
Upper
00
Byte No.
Upper
00
Lower
31
5
Lower
02
Lower
04
-
6
Holding register
1 No.
Upper
00
Holding register
1 data
Upper
17
-
7
Lower
40
Lower
70
-
8
Holding register
2 No.
Upper
00
Holding register
2 data
Upper
02
-
9
Lower
46
Lower
7B
-
10
CRC-16
Upper
4B
CRC-16
Upper
06
-
11
Lower
1A
Lower
10
-
Note:
The number of bytes set within the response message sets twice the number of data contained in the command message.
Summary of Contents for H6B1A002
Page 12: ...12 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
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Page 454: ...5 14 Z Bypass Parameters 454 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Page 590: ...8 6 Storage Guidelines 590 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Page 780: ...11 3 European Standards 780 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...