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Tecomat TC600
TXV 138 08.02
20
Detection of the CTS signal may be either off or on. By pressing the SET
button we change the setting, by pressing the MODE button we save the set
value and move to setting of another parameter.
When detection of the CTS signal is on, before transmission of the reply
the PLC tests state of the CTS signal after setting the RTS signal. The reply
is transmitted only if the CTS signal has the same value as the RTS signal.
This mode is suitable for communication via modems. The set reply delay
holds in this mode too, it is thus ensured that PLC shall not reply before the
delay elapses even if the CTS signal is already set.
When CTS signal detection is off, PLC controls the RTS signal but does
not take into consideration state of the CTS signal.
Detection of the CTS signal can be set for the PC mode of all channels
and for the MAS mode for channel CH2. For channels CH2 and CH3 in the
uni mode, detection of the CTS signal can be set using the initialisation ta-
ble in the user program.
Parameters of CH1 are implicitly set by the producer to the following
values: mode - PC, address - 0, speed - 19.2 kb/s, delay - 0, CTS detection
- off
CH2 and CH3 are implicitly off.
4.5.2
Management of the user program source memory
When setting parameters of the source memory, a message of the fol-
lowing type is shown on the display
with the following meaning:
EP- setting of the user program source memory
off - memory off (default value)
The source memory may be either off or on. By pressing the SET button
we change the setting, by pressing the MODE button we save the set value
and move to setting of another parameter.
When the parameter is set to the off value, after the PLC switches to the
RUN mode, program stored in the user program memory is run. When the
parameter is set to the on value, after the setting mode is ended and in
every subsequent turning on of the PLC power supply, program from the
source memory is first moved to the user program memory, and this pro-
gram is then run in the RUN mode. The function serves especially for
backing of power-dependant memory of the user program.
Default setting of
parameters