Steve Bailey
Lifetime Supporting Member + Moderator
I am tasked with connecting multiple Watlow EZ-Zone PM controllers to a Watlow EZ-Zone RUI/Gateway unit. They show up to 16 controllers connected to a single gateway over an RS485 two-wire cable. I'm accustomed to putting terminating resistors at the physical ends of RS485 cables, but the Watlow manual doesn't show them on the Watlow standard bus side, only on the Modbus RTU side when you choose that option.
Does anyone have any experience with a setup like this? Can I leave the cable unterminated and reliably get the data from the controllers to the gateway?
Does anyone have any experience with a setup like this? Can I leave the cable unterminated and reliably get the data from the controllers to the gateway?