Keyence Visual KV Series Bedienungsanleitung PDF herunterladen (Seite 280)

7.5 KV Mode Programming

KV-300 Series Only

KV-300

KV-10/80

Chapter 7 KV-L2 Serial Interface Module

1-256

Command and response

"Command" and "response" in communications between the KV-L2 and a personal

computer are defined as follows:

Command:

Message transmitted from a personal computer to the KV-L2

Response:

Response to the command transmitted from the KV-L2 to the personal computer

When a command is transmitted from the personal computer to the KV-L2, the KV-

L2 sends a response to the personal computer. When writing a program to be

controlled by the personal computer, be sure that the response from the KV-L2 is

confirmed before the next command is transmitted.

Command/response format

Command/response formats are as follows:

The personal computer transmits a command to the KV-L2 according to the com-

mand format. The KV-L2 recognizes CR as delimiter, and thus ignores the LF in the

CR LF command and identifies the subsequent characters as the command.

The KV-L2 returns a response to the command according to the response format.

When writing a program with a personal computer, verify that the response can be

handled according to the response format.

When the 1:n connection pattern is used, the personal computer communicates only

with the KV-L2 set to the specified station no. To communicate with a KV-L2 set to

another station no., terminate communications with the KV-L2 set to the specified

station no. and send a communication start command (CR_nn) in which the new

station no. is specified in "nn."

Communications commands and responses

Communications command/response list

Command format

Command

Response

Response format

Function Command Response Remarks

Starts communi- CR_nn CC_nn nn = Station no. (00 to 09, 15)

cations Specify in decimal value

(not required for 1:1 connection)

Ends communi- CQ CF

cations

Changes mode Mn OK n=0: PROGRAM mode

of KV-300 CPU n=1: RUN mode

Error clear mode ER OK

Checks CPU error ?E dd dd: Error code (No error: 00)

Inquires model ?K K300

Checks current ?M 0 O: PROGRAM mode

mode 1 1: RUN mode

Reads counter RD_Cnnn f,ddddd,ddddd f=0, 1 0: contact OFF 1: contact

RD_CTHn (current value) ON ddddd=00000 to 65535

RD_CTCn (preset value) (in decimal) n/nnn=counter no.

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