Mas to dobre.

http://rs232.hw.cz/
1 CD <-- Carrier Detect
2 RXD <-- Receive Data
3 TXD --> Transmit Data
4 DTR --> Data Terminal Ready
5 GND --- System Ground
6 DSR <-- Data Set Ready
7 RTS --> Request to Send
8 CTS <-- Clear to Send
9 RI <-- Ring Indicator

vystupy suhlasia a mas tam log.1 (-5 V az -15 V) a tak to ma byt. Cisla pinov si dufam pouzil tie ktore su napisane na RS232 (canon) konektore