Our ABB Vision System requires a Pulse Train Input from an Encoder (12-15 VDC)to calculate the speed of the web. Instead of adding an encoder to the roll, I would like to send it a pulsed signal (240 ppr) created by either a third party device (4-20ma to 240 ppr) or maybe using a 1756-HSC. I would appreciate information on either solution. I am unable to determine if the 1756-HSC can generate this output signal. Thank you for any help.