KEYENCE Visual KV Series - Manual (Page 333)

7.2 Serial Communication
3-309
1 7
Chapter 7 Serial Communication
■ Command/response format
"Command" and "response" in communications between the KV and a personal
computer are defined as follows:
Command: Message transmitted from personal computer to KV
Response: Answer to the command (message from KV to personal computer)
When a personal computer transmits a command to the KV Series basic unit, the KV
sends back a response to the personal computer.
When creating a program to control the KV using a personal computer, create it so
that the response is checked before the next command is transmitted.
7.2.2 Format of Commands/Responses
The formats of commands and responses are as follows:
Command format
Use the following format to transmit commands from the personal computer to the
KV. [CR] is a delimiter. The KV ignores [LF] and recognizes the next character after
[LF] as the next command.
Response format
The KV sends back a response to the received command in the following format.
When creating a program using a personal computer, create it so that the personal
computer can process the response in this format.
Command
Response
Or
C
R
C
R
L
F Command
C
R
L
F
KVNKA Chap 07.p65 08.3.11, 0:11 PM 309