Omron CQM1H-SCB41 operation manual 145

CompoWay/F Master Protocol Appendix B

Example: The following example illustrates reading the present value from a K3Nj-series Intelligent Signal Proc- essor.

CompoWay/F command

VARIABLE AREA READ Command code: 01 01 First read address

CS1-series PC

CompoWay/F response

Read data = present value

Intelligent Signal Processor

K3Nj-jjjj-FLK1/2/3/4/5/6

Sequence No. 600 (Send with ASCII Conversion, with Response) is used. The specified data beginning with the command code is converted ASCII and sent to the Intelligent Signal Processor with the specified node number. The response is converted to hexadecimal and stored starting at the specified word.

The command frame for reading the present value for a K3Nj-jjjj-FLK1/2/3/4/5/6 Intelligent Signal Proces- sor (command code 01 01) is shown below. The following data is specified in the operands for PMCR(260).

•Rightmost byte of S+1: Node number (2 digits BCD)

•S+2: Command code: MRC + SRC = “0101”

•S+4 on: Send data = Variable type + first read address + 00 + number of elements.

STX

Node No.

Subad-

SID

Command code

Send data

ETX

BCC

dress

MRC

SRC

Variable

First read

Always

No. of

type

address

00

elements

(Note)

(02Hex)

(⋅ 101)

(⋅ 101)

00

0

01

01

C0

0000

00

0001

(03Hex)

Data in shaded portions is specified in the PMCR(260) instruction.

Note A first read address of 0000 specifies the present value. An address of 0001 specifies the maximum value; 0002, the minimum value; and 0003, the status.

The response frame is shown below. The response code and receive data are stored according to the operands for PMCR(260) as follows:

•D+1: Response code

•D+2 and on: Receive data

STX

Node No.

Subad-

End

Command code

Response code

Receive

ETX

BCC

dress

code

data

MRC

SRC

Note 1

Read data

(Note 2)

(02 Hex)

(⋅ 101)

(⋅ 101)

01

01

00

00

0000

(03 Hex)

Data in shaded portions is stored at the location specified by the operand in the PMCR(260) instruction. Note 1. Response Codes

Response code	Meaning
“0000”	Normal end
“1001”	Command too long
“1002”	Command too short
“1100”	Parameter error
“1101”	Area type error
“1103”	First address range error
“2203”	Operating error

2. The read data is returned as 4-digit hexadecimal as follows: F0019999 to 00099999 Hex.

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