Receive Ttl

Hello,

I am french, so I am sorry for my very bad english.

I need to synchronize the stimuli appearance with the response of a sensor.

This sensor is an inductive sensor. here below is the technical datas :
[url]http://www.ifm.com/ifmfr/web/dsfs!IGT202.html[/url]

So Then I test dialog between the sensor and directRT in the TTL I/O Test, it doesn't function.
However, when I test it with Hyper terminal of windows, I send the data $016, I receive 007E00 or 007F00 depending on the detection of the sensor.
The sensor is connected on port COM 1 by RS232 cable.

So I don't understand what's happening ?

Thanks for your help.

Best regards.

Jean-Luc.