Yokogawa Touch Screen GP20 - Manual (Page 65)

2-51
IM 04L51B01-17EN
Commands and Responses
1
2
App
2.7 Communication
Control Commands
CCheckSum
Sets the Checksum
Sets the presence or absence of checksum.
Syntax CCheckSum,p1
p1 Checksum usage
0 Do not compute
1 Compute
Query
Example Enable the checksum.
CCheckSum,1
CSFilter
Sets the Status Filter
Sets the filter used when outputting the GX/GP status.
Syntax CSFilter,p1
p1 Filter values for status information
numbers 1 to 4 (0.0.0.0 to
255.255.255.255)
Query CSFilter?
Example Set the status filter value to 255.127.63.31.
CSFilter,255.127.63.31
Description
• The status filter is applied to each communication
connection.
CLogin
Log in over a Communication Path
Logs in over a communication path.
Syntax CLogin,p1,p2
p1 User name
p2 password
Example Log in using the user name “admin” and
password “password.”
CLogin,admin,password
Description
• For the characters that you can use for the password,
see Appendix 1 .
CLogout
Log Out over a Communication Path
Logs out over a communication path.
Syntax CLogout
Example Logs out from the GX/GP.
CLogout
ESC O
Opens an Instrument (RS-422/485
command)
Starts communication with the GX/GP. ESC in ASCII code
is 0x1B. For details, see Appendix 1 .
Syntax ESC O p1
p1 Instrument address (01 to 99)
Example Open the instrument at address 99.
ESC O 99
Description
• Specify the address of the instrument that you want to
communicate with.
• You can only open one instrument at any given time.
• If you execute ESC O, any instrument that is already
open will be automatically closed.
• Use a capital “O.”
• For this command, use CR+LF for the terminator.
• For the responses to this command, see
page 2-56 .
ESC C
Closes an Instrument (RS-422/485
command)
Ends communication with the GX/GP. ESC in ASCII code
is 0x1B. For details, see Appendix 1 .
Syntax ESC C p1
p1 Instrument address (01 to 99)
Example Close the instrument at address 77.
ESC C 77
Description
• This command closes the connection to the
instrument you are communicating with.
• Use a capital “C.”
• For this command, use CR+LF for the terminator.
• For the responses to this command, see
page 2-56 .