KEYENCE DV-90 - Manual (Page 188)

8-10 E DV-90-IM
8
Ser
ia
l Comm
unicati
on
8-3
Command Communication Details
In the command communication, there are “Direct control commands” to control the DV-90 directly, and “Setting
commands” to change/confirm the settings of the DV-90.
Procedure for Using the Direct Control Commands
➀Send control commands directly from the PC to the DV-90.
➁The DV-90 sends a response after receiving the command.
• When the command proceeds normally, the DV-90 responds OK.
• When a command is sent to read out the present state, the DV-90 responds with a contents read-
out.
• When an incorrect command is sent, ERR
ЧЧ (ЧЧ is the error code) is sent back. (
Refer to 8-
12)
Communication Format
The communication formats are as follows:
Command :
Response :
Note
• The data in the receive buffer can be erased when a command is sent with at the
top. Add to the command when unnecessary characters are included in the
receive buffer of the DV-90 because of garbled characters, etc. However, cannot
be added to the response.
• It is acceptable to add to the end of the command. However, is not added to
the response.
• The form cannot be used.
• At the command communication, the interval for sending one character (byte) and sub-
sequent characters is 10 seconds or less. The DV-90 deletes characters received after
10 seconds have elapsed.
DV-90 PC
➀Command
➁Response
command CR
response CR
ESC
ESC
ESC
LF LF
STX command ETX