The protocol converter is equipped with RS232 interfaces which allow only
asynchronous data traffic. A telecontrol transformer (TCT)
can be used for coupling other protocols (for instance bit synchronous or pulse
length modulated protocols).
The TCT is equipped with a µ controller responsible for converting data from
or into the asynchronous format. The TCT does not assume a higher protocol
function, telegrams are transformed on a one-to-one basis.
In order to prevent delays in receiving or transmitting, the connection
towards the protocol converter operates at very high baud rates. Data transfer
does not occur after a complete telegram has been received, but in smaller data
blocks during reception.
The TCT is fitted with a serial RS232 interface in both directions as a
standard. The serial interface towards the communication terminal equipment has
been electrically isolated.
Interface in direction to the PC
RS232 (RxD, TxD, Gnd) DCE
baud-rate max. 57.600 baud
asynchronous data format
Interface in direction to the data communi-cation device
RS232 (RxD, TxD, RTS, CTS, Gnd) DTE
baud-rate max. 2.400 baud (higher baud-rates in request)
4 in- and outputs (RxD, TxD, RTS, CTS) are optodecoupled in acc.
to VDE 0884
insulation voltage 2kV=
1 LED for function diagnosis
3 LEDs for data transmission (receiving, transmission and error)
Environmental- / storage temperature
0° C to 55° C / -10° C to 70° C
5 % to 90 % non-condensing