Nh-el models – Nortec Modbus User Manual
Page 7
NH-EL Models
The NH-EL models use a 3 pole connector on the main processor card for Modbus connection.
This 3 pole connector is provided with all NH-EL and connections can be made directly to this
plug. Refer to Figure 2 and Figure 3 for connection location and wiring.
Please note: there is a 120 Ohm termination resistor available on board. When the jumper J4
is on, 120 Ohm is enabled. When the jumper J4 is off, 120 Ohm is disabled.
Figure 2: NHEL Modbus 3 Pole Plug Location
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|Modbus Installation
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