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My employer asked me (I am a software engineer, and sadly I have little experience in fiddling with hardware) to try to couple our JR3 force - torque sensor with a PCI card reader that we managed to dig up, and that is hopefully a correct substitute for the card offered by JR3. The result should look somewhat like this:

http://www.jr3.com/uploads/4/5/7/0/45700429/9611-.pdf

Now the force sensor's digital output is a RJ11 6p6c cable (6 pins), which is plugged into female RS232 adapter/port, which in its turn is plugged into RS232 male port on the card reader.

I referred to the documentation I found on their website (see p. 3-3): http://www.jr3.com/uploads/4/5/7/0/45700429/_5977_sensor_w_int_elect.pdf

However, I can't quite tell from the pin-out diagram how exactly am I supposed to wire my RS232-female adapter to accommodate 6 pins of the digital output cable. Quick search on the internet did not yield any correspondance between abbreviations given in the diagram and RS232-male port pins.

Would you be so kind to tell me whether it is possible to define proper wiring based on the said diagram, or whether the only option is to directly refer to the manufacturer? I wanted to make sure before I start disturbing them.

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    \$\begingroup\$ I did not see anything that referred to RS-232 in the documentation. Where does that come from? \$\endgroup\$ – crj11 Mar 5 '18 at 16:11
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    \$\begingroup\$ The interface is undefined differential, not single-ended RS232 so wrong adapter \$\endgroup\$ – Sunnyskyguy EE75 Mar 5 '18 at 16:27
  • \$\begingroup\$ The 6pin connector requires/supports a signal protocol to understand the sensor data. You need that protocol before you do anything else. \$\endgroup\$ – Jack Creasey Mar 5 '18 at 16:30
  • \$\begingroup\$ @crj11 You're right, my apologies. We realized that the part number (P/N) of the JR3 pci card is the same as this one: amazon.com/gp/product/B003D7VFPQ/… which uses serial port as an input, and which is order of magnitude cheaper than the one provided by the manufacturer (god knows what happened to the one we were supposed to have). I think I should simply rephrase the question into "what interface is used for the sensor" \$\endgroup\$ – MutomboDikey Mar 5 '18 at 16:33
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    \$\begingroup\$ You can waste a lot of time or get the right interface card from supplier as the interface is no doubt proprietary. \$\endgroup\$ – Sunnyskyguy EE75 Mar 5 '18 at 16:43
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JR3 uses a custom protocol to communicate with the transducer. You'll need a PCI interface card from JR3 and drivers from JR3 (http://www.jr3.com/current-drivers.html). As far as I know, the physical protocol is not compatible with RS232. Here is a drawing of the system setup you'll need: http://www.jr3.com/uploads/4/5/7/0/45700429/9611-.pdf.

Disclaimer - I work for ATI Industrial Automation, a competitor to JR3.

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  • \$\begingroup\$ Thank you for the answer. Do you by any chance happen to know what does the actual interface look like? Sadly, I never managed to find drawings/pin-outs for the port on the PCI card reader. At this point I can only guess what does the other end of the cable look like (the sensor has an RJ-11 6p6c port though). \$\endgroup\$ – MutomboDikey Mar 7 '18 at 15:56

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