Mitsubishi FR-S500 Instruction Manual download pdf (Page 133)

124

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.

0 1E1 07ADF4

H05 H30H31 H31H45H31 H30 H37 H41 H44 H46 H34

0 117 0

H02 H30 H31 H37H31 H37 H30 H03

H33 H30

Sum

check

code

Sum

check

code

Binary code

(Example 1)

Computer Inverter

ASCII code

(Example 2)

Inverter Computer

ASCII code

Binary code

1F4

++++++++

130

30+++++

Sum

Station

number

Read time

Station

number

Data

Waiting

time

Instruction

code

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 128.)

REMARKS

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. When accessing the parameter settings, data for link parameter expansion

setting differs between the parameters as indicated below:

Instruction

Code

Data

Read H7F

Link

parameter

expansion

setting

Write HFF

H00: Pr. 0 to Pr. 99 can be accessed.

H01: Calibration parameters C1 to C7 (Pr. 900 to

Pr. 905) and communication parameter n13

(Pr. 145) can be accessed.

H03: Communication parameters n1 to n12

(Pr. 331 to Pr. 342) can be accessed.

H09: Communication parameters n14 to n17

(Pr. 990 to Pr. 993) can be accessed.

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Mitsubishi FR-S500 Instruction Manual Page 133

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