Input Buffer Requirements; Message Terminators - TDK-Lambda Genesys Series User Manual

The rules for the One Client/Multiple Clients are:
Web Page
Not logged-in
Web Page
Logged-in as "admin"
VISA Connection
TCP Socket
UDP Socket

9.5. Input Buffer Requirements

With a controller using TCP or UDP sockets, the power supply can receive commands much
faster than it can process the commands. To make sure the Genesys™ LAN is not overloaded,
it is required that the controller sometimes sends a query and then waits for the response. The
response is the acknowledgement from the Genesys™ that it has finish processing all
commands.
When using sockets, no more than Twenty SCPI commands may be sent before
a query must be sent.
This is to prevent the controller (PLC) from sending commands faster than the
power supply can process them.
It is recommended that your controller routinely sends "SYST:ERR?". This query
takes little time ( 30 mSec), and it verifies that all commands have been accepted
correctly.

9.6. Message Terminators

When you are using a program that sends separate SCPI commands out through a TCP
socket, the socket drivers may combine all the messages into one long packet. Therefore, it is
necessary to add a terminator character to the end of each SCPI command.
All SCPI commands must have a terminator character.
Commands
from the Controller
Responses
from the Genesys™ LAN
One Client Only
Multiple web pages may be open at any time.
You may view but cannot change the power supply operation.
You cannot log in if a VISA or socket port is already open.
If you are logged in, any other connections are blocked.
Only one VISA port may be open at one time.
One TCP Socket
may be opened.
If no VISA
or Admin Web is opened.
UDP sockets are blocked.
Terminator Character
(and ASCII hex)
One or more terminators required:
Line-feed, Carriage-return or Semicolon
0x0A
All responses have Line-Feed at end.
34
34
Multiple Clients
Multiple TCP and UDP sockets
may be opened at the same time
if no VISA or Admin Web is
opened
0x0D 0x3B
0x0A