Electrical Powering; Rs485 Interface For Connection To Enod4 - Scaime eNodTouch User Manual

1.3. Electrical powering

•
Supplying a power voltage other than that specified will damage the power source and the unit.
•
When the FG terminal is connected, be sure the wire is grounded.
Conductor type

1.4. RS485 interface for connection to eNod4

•
The serial interface is not isolated. Always connect the SG (Signal Ground) of the unit to the connected device.
•
SG (Signal Ground) and FG (Frame Ground) are connected internally
•
A terminating resistor can be inserted using the DIP Switch (4-bit) on the rear of the RS-422/485 type. Factory default
settings are all set to "OFF" (no terminating resistor).
+
24V
-
0V
Grounding Terminal
FG
connected
to eNodTouch chassis
Simple Wire: 0.75 to 1.5mm2
Stranded Wire: 0.75 to 1mm2
RS422/RS485 terminal Block
Label Meaning
CSB Send Possible B (-)
CSA Send Possible A (+)
ERB Data Terminal Ready B (-)
ERA Data Terminal Ready A (+)
SG Signal Ground
RDB Receive Data B (-)
RDA Receive Data A (+)
SDB Send Data B (-)
SDA Send Data A (+)
5
User manual SCAIME:
NU-eNodTouch-E-0413