External control

■Control commands

Name

Character

ASCII

Descriptions

Header

<

3CH

Beginning of the message

 

 

 

 

Command

#

23H

Command message

 

 

 

 

Response

$

24H

Normal response message

(Normal)

 

 

 

 

 

 

 

Response

!

21H

Error response message

(Error)

 

 

 

 

 

 

 

Terminator

CR

0DH

End of the message

■Support commands

An instruction for the controller is called a “comm and,” while the message sent back from the controll er is a “response.” The commands below marked by ○ are supported.

If an unsupported command is received by the controller it returns an error response including a “NOT supported error” code.

No.

Command name

Code

Description

Support

1

Data area read

RD

Reading from data area

○

 

 

 

 

 

2

Data area write

WD

Writing to data area

○

 

 

 

 

 

■Error codes

Binary hexadecimal 00-FF (ASCII-encoded)

・Description of generated errors

Error code

Error name

Descriptions and troubleshooting

 

 

 

40H

BCC error

The command data caused a BCC error.

<Troubleshooting> Check the BCC code and resend the data.

 

 

 

 

 

 

 

For example, the transmission format of the command data is not

41H

Format error

correct, or the address does not exist.

 

 

<Troubleshooting> Correct the format or command.

 

 

 

42H

NOT supported error

The sent address was outside the range.

<Troubleshooting> Check the address.

 

 

 

 

 

45H

Address error

The sent address was outside the range.

<Troubleshooting> Check the address.

 

 

 

 

 

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