Mitsumi electronic FR-F520-0.75K, 55K instruction manual Instruction Data, H7F, Hff

PARAMETERS

7)Sum check code

The sum check code is 2-digit ASCII (hexadecimal) representing the lower 1 byte (8 bits) of the sum (binary) derived from the checked ASCII data.

(Example1)

Station

Instruction

*Waiting time

Sum check

Computer→ Inverter

ENQ

Data

number

code

code

0

1

E

1

1

0

7

A

D

F

4

← Binary code

ASCII code→

H05

H30

H31

H45

H31

H31

H30

H37

H41

H44

H46

H34

↓

H

H

H H

H

H

H H

H

30 + 31 + 45 + 31 + 31 + 30 + 37 + 41 + 44

H

=1F4

Sum

*When Pr. 123 "waiting time setting" ≠ 9999, create the communication request data with no "waiting time" in the data format. (The number of characters is decreased by 1.)

(Example2)

Station

Sum check

Inverter→ Computer

STX

Read data

ETX

number

code

0

1

1

7

7

0

3

0

← Binary code

ASCII code→

H02

H30

H31

H31

H37

H37

H30

H03

H33

H30

↓

H

H

H H

H

H

30 + 31 + 31 + 37 + 37 + 30

H

=130

Sum

8)Error code

If any error is found in the data received by the inverter, its definition is sent back to the computer together with the NAK code. (Refer to page 118)

Note: 1. When the data from the computer has an error, the inverter will not accept that data.

2.Any data communication, e.g. run command, monitoring, is started when the computer gives a communication request. Without the computer's command, the inverter does not return any data. For monitoring, therefore, design the program to cause the computer to provide a data read request as required.

3.Data for link parameter expansion setting differs as indicated below between access to Pr. 0 to Pr. 99 values and access to Pr. 100 to Pr. 905:

		Instruction	Data
		Code
			H00: Pr. 0 to Pr. 79 values are accessible.
	Read	H7F	H01: Pr. 100 to Pr. 158 and Pr. 900 to Pr. 905 values are
			accessible.
Link parameter			H02: Pr. 160 to Pr. 244 values are accessible.
expansion setting			H03: Pr. 300 to Pr. 348 values are accessible.
	Write	HFF	H05: Pr. 500 to Pr. 516 values are accessible.
			(NA, EC versions only)
			H09: Pr. 990 and Pr.991 values are accessible.

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