Senlan Hope800 Series Manual page 135

 Table of communication status variables
Name
Main status word
Operating
frequency
Arithmetic unit 1
output
Arithmetic unit 2
output
Reference
frequency
Output current
Output torque
Output voltage
DC link voltage
Fault code
Alarm word 1
Alarm word 2
Extended status
word 1
Extended status
word 2
Extended status
word 3
Extended status
word 4
Extended status
word 5
 Hope800 inverter supports the communication on a Modbus network using RTU (Remote Terminal Unit)
mode. The functions it supports include: Function 3(read multiple parameters, with max. word number
of 50), Function 16(write multiple parameters, with max. word number of 10), Function 22(mask write)
and Function 8(read-back test). Among them, Functions 16 and 22 support broadcast (broadcast message
address is 0). In RTU mode, both the starting and ending of the message frame are marked by an interval
of at least 3.5 character times(but 2ms for baud rates of 19200bit/s and 38400bit/s). A typical RTU
message frame is shown below.
Slave address
(1 byte)
Function 3: read multiple parameters. Word number read ranges from 1 to 50. Refer to the following
example for its message format.
Example: read the main status word, operating frequency and arithmetic unit 1 output (three words with
their addresses beginning with 3210H) from the #1 slave.
Modbus
Change
address
△
3210H
△
3211H
△
3212H
△
3213H
△
3214H
△
3215H
△
3216H
△
3217H
△
3218H
△
3219H
△
321AH
△
321BH
△
321CH
△
321DH
△
321EH
△
321FH
△
3220H
Modbus function code
(1 byte)
Bit 0: Ready(constant 1)
Bit 1: Ready for run
Bit 2: Running
Bit 3: Fault
Bit 4: OFF2
valid)
Bit 5: OFF3 stopping(0:
valid)
Bit 6: Charging contactor
open
Bit 7: Alarm
Non-negatives(unit: 0.01Hz)
Unit: 0.01%，
Pulse number should be the unit when it is high and low
word of coder position
Non-negatives(unit: 0.01Hz)
Unit: 0.1A
Rated torque with a unit of 0.1%
Unit: 0.1V
Unit: 0.1V
See page 123
See page 107
See page 107
Bits 0~15 correspond to digital outputs 0~15
Bits 0~15 correspond to digital outputs 16~31
Bits 0~15 correspond to digital outputs 32~47
Bits 0~15 correspond to digital outputs 48~63
Bits 0~9 correspond to digital outputs 64~73
Data
(multiple bytes)
6 Parameter Description
Description
Bit 8: Reserved
Bit 9: Reserved
Bit 10: Frequency reach
valid(0: detection signal 1
Bit 11: Reserved
Bit 12: Reserved
Bit 13: Reserved
Bit 14: Running forward
Bit 15: Reserved
CRC16
(2 bytes)
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