[RESOLVED] RS232/485 to TTL Connection

[honeybee]

Yep, the wires are labelled:

1. FG
2. TX/RX-
3. TX/RX+
4. VP (DC24V)
5. VG
6. FG

While the pins 1, 5 and 6 are probably used for grounding or loopback, 2 and 3 must be the data connections while 4 is the so-called 'reference' pin. The voltage for this pin is given as DC24V. So another question is, can the device support voltages this high?

The device is a finger-vein reader (the sort where you have to insert your finger inside and it scans for the vein pattern of your finger). The manual is in Japanese, and it does not specify how the wires could be connected to either an RS485 connector or an RS232 connector.

I am taking up this discussion at the older thread I had posted:

http://www.vbforums.com/showthread.p...45#post3941845

.