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The cable will be passing modbus and another equal cable will be used for loadshare. The total cable distance will be about 100ft. Its catalog number E2032S.

I notice other threads related to CAT5, but am unsure if I'll be opening myself up to a lot of issues during commissioning if I don't get the correct cable with 120 Ω characteristic impedance.

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  • \$\begingroup\$ What are the specifications of the cable you are considering? \$\endgroup\$ – davidmneedham Apr 22 at 20:13
  • \$\begingroup\$ Its catalog number E2032S. alliedelec.com/m/d/8638376463924f08c76638a6e4679c16.pdf Thank you for the help. \$\endgroup\$ – wouldliketoknow Apr 22 at 20:36
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    \$\begingroup\$ The product you selected probably has a characteristic impedance of around 60 ohms due to the thin PVC insulation.There will be reflections and it could cause bit errors. \$\endgroup\$ – davidmneedham Apr 22 at 20:44
  • \$\begingroup\$ Thank you. No way to correct this by using 60ohm resistors rather than 120ohm at the ends? \$\endgroup\$ – wouldliketoknow Apr 22 at 20:47

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