Modbus Termination Switch Settings - (Commercial Parent/Child Units); Modbus Termination Switch Settings - (Commercial Child Units Only) - Siemens VersiCharge AC Installation And Operation Manual

3. Gently tuck the wiring into the space and secure the back of the charger.
Security Note: The Modbus RTU is open protocol and it is the responsibility of the installer to ensure
the security of the wiring of these connections to prevent tampering.
3.7.2 Modbus Termination Switch Settings – (Commercial Parent/Child Units)
Figure 15. Termination switch setting for parent/child units
1. SW3-1 (left side) labelled RS485 is the termination switch. This switch should be in the ON position for the parent unit or
in the OFF position for a child unit, unless that child is the last child in the daisy chain, in which then it must be ON.
3.7.3 Modbus Termination Switch Settings – (Commercial Child Units Only)
Figure 16. Termination switch setting for child units only
1. SW3-2 (right side), labelled RS485 Term, is the termination switch. For the child units, the termination switch
must be set to OFF; if the unit is the last one in the daisy chain, then the switch must be set to ON.
Installation and Operations Manual VersiCharge™ AC
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