COMMUNICATION PROBLEM
COMMUNICATION PROBLEM
(OP)
What type of RS232 cable does the DIGSI 4.0 use to commicate to siprotec 7UT612:
.Null modem with loop back handshaking
.Null modem without handshaking
.Null modem with partial handshaking
.Null modem with full handshaking
.Null modem with loop back handshaking
.Null modem without handshaking
.Null modem with partial handshaking
.Null modem with full handshaking






RE: COMMUNICATION PROBLEM
RE: COMMUNICATION PROBLEM
DB9 connectors, female on PC-end, male on relay end;
lines between pins 2 and 3 (RxD, TxD) crossed, pins 5 (Gnd) connected straight and to the screen of cable
on PC-end: bridge between pins 4 and 6, bridge between pins 7 and 8
on relay end: bridge between pins 7 and 8
No reason to pay 50 EUR for this cable, it is very easy to solder one yourself from materials for less than 2 EUR.
------------------------
It may be like this in theory and practice, but in real life it is completely different.
The favourite sentence of my army sergeant