Serial connection to HNC100

[tipex]

While trying to connect to an Bosch Rexroth HNC100 controller through both profibus and directly with serial I can't seem to find the device. Used an Cisco-router to check that the COM-port and cable in use is function correctly so there shouldn't be any problems there. The HNC100 have only two LEDs to display status one "Run" and one "5V CPU". The 5V CPU is on, but the Run-LED is dark. I'm thinking it probably only turns on when the HNC100 is running an NC-program and that it should allow me to connect to it with no regards to what run-condition it's in. Anyone with personal experience with this or any good suggestion how to solve this? Tried calling Bosch Rexroth but they didn't figure it out.

[tipex]

Problem solved, the standard DB-9 RS232 wasn't that standards anyway, but more like an RS232 Null-modem with gender-change. Recieved a pin-out like this: TxD 2 = 2 RxD RxD 6 = 3 TxD CTS 3 = 7 RTS RTS 7 = 8 CTS GND 5 = 5 GND Also the pin 4 DTR and 6 DSR on the computerside had to be shorted. Figure this is null modem cable with loop-back handshake?

[Alpp00]

On 2/19/2008 at 7:50 AM, tipex said:

Problem solved, the standard DB-9 RS232 wasn't that standards anyway, but more like an RS232 Null-modem with gender-change. Recieved a pin-out like this: TxD 2 = 2 RxD RxD 6 = 3 TxD CTS 3 = 7 RTS RTS 7 = 8 CTS GND 5 = 5 GND Also the pin 4 DTR and 6 DSR on the computerside had to be shorted. Figure this is null modem cable with loop-back handshake?

This is super helpful. I used this today so thank you!

Edited August 4 by Alpp00