I have just acquired an ADC16 and a pair of RF solutions RS232C-868FR Radio Modems to transmit data. I am having problems getting them to work together.
I am trying to power the whole lot off 9V batteries; hence I have one for each radio modem and then a pair to give me +9v;-9v and 0v as it appears that the modem will not power the logger. I have created a customised serial cable with GND going to pin 5; +9v going to pin 7 and -9V going to pin 4 and when I stick a voltmeter on the +-5v on the terminal board I get the expected readings. I have then connected all of the other pins strainght through to the radio modem.
However when I try to get picolog record to talk to the logger I get a unit not found error message. I am fairly sure the radio modems are chatting away as there are suitable RX and TX lights when I use the suppied software to send data; so I think I have got something wrong with my connecting cable. Any help would be appreciated.
(the radio modem pins are 2;tx 3;rx, 4DTR, 5;GND, 7;RTS, 8;CTS incase its important)