KEYENCE Visual KV Series - Manual (Page 335)

7.2 Serial Communication
3-311
1 7
Chapter 7 Serial Communication
7.2.4 Setting Communication Commands and Responses to
Commands
This section describes the command settings and responses when a command is
properly processed.
"_" represents a space.
Refer to "7.2.5 Other Response Codes" (p. 3-315) for responses under abnormal
conditions.
■ Communications start command
Transmit a communications start command to start communication with the KV.
Other commands can be transmitted after the proper response is sent back from the
KV.
Note: Other commands cannot be used unless a [CR] (communications start)
command is transmitted first.
Starts communications between the KV and a personal computer.
Command: CR
Response: CC
■ Communications end command
Ends communications between the KV and a personal computer.
Command: CQ
Response: CF
■ Mode change command
Selects the mode between PROGRAM and RUN.
Command: Mn [n=0; PROGRAM mode, n=1; RUN mode]
Response: OK
■ Error clear command
Clears error messages on KV.
Command: ER
Response: OK
■ Checking KV PLC error
Checks errors or faults in the KV. The description of the error is indicated with the
error code.
➮ "7.2.6 Error Code List" (p. 3-316).
Command: ?E
Response: dd
Error code (2- or 3-digit number)
■ Checking current mode
The KV responds with 0 or 1 indicating a current mode.
Command: ?M
Response: f
0: PROGRAM mode 1: RUN mode
KVNKA Chap 07.p65 08.3.11, 0:11 PM 311