Inovance MD520 Series - Page 22

Modbus Communication
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Figure 3‑1 Modbus communication interface
Table 3–1 Function description of MD38TX1 terminals
Terminal ID Terminal Name
Function
Terminal Layout
J2 485+ RS485
communication
signal (positive)
RS485
communication
terminal with
isolation input
485 + 485 - CGND
485– RS485
communication
signal (negative)
RS485
communication
terminal with
isolation input
CGND
Reference ground of
RS485
communication
signal
Isolated power
supply