Change In Cts Signal When Responded From Gt (Except Gt01) - Panasonic GT02 Manual

5.1.3 Change in CTS Signal When Responded from GT (Except GT01)

In the two-way 2 mode, the external device and the GT both have the transmission right, so if a
command is sent from the external device when a message is being sent from the GT, the normal
communication may be interfered. The GT monitors the L/H level
case it temporarily interrupts the message transmission so that the normal communication will be
maintained. The communication program for the two-way 2 mode should be created at the external
device side considering the points below.
1) When the CS (CTS) changes from L to H during a message being sent, the GT will stop sending the
message at the time that the CS (CTS) changes to H, and then restart sending the rest of the message
after it changes to L.
If a command to request a response is sent from the external device during a message is being sent
when the CS (CTS) is H, the GT will resend the rest of the message at the time that the CTS changes to
L, and then send a response to the received command.
2) If a command is sent from the external device during a message is being sent when the CS (CTS) is L,
the GT will continue the message transmission being receiving the command.
3) If commands are sent successively during a message being sent under the condition that a response
cannot be sent back and the CS (CTS) is L, the GT will send back a response. However, in that case, it
is not assured to which command the response was sent back.
4) When sending commands successively, the next command should be sent after intervals of more than
50 ms.
5) If a screen where to jump is complicated, it may need a long time for GT to change the screen. If
commands are sent successively when changing a screen, confirm the time interval of the consecutive
commands using the screen data used. The time interval may need to be more than 50 ms depending
on the complexity of a screen.
Note) The L/H level shows the signal at the microcomputer port level. It means that L=0 and H=1.
For the voltage of the RS232C port, the plus voltage is output at the level L and the minus voltage
at the level H.
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Note)
of the CS (CTS), and in the above