2 Installation and Wiring
- 28 -
Category
Terminal
Symbol
Function Description
Technical Specifications
24V2 external
power supply
port
24V2
Independent 24 V power
supply
24 V power output (optional);
output current 4 A
COM2
Independent 24 V power
supply ground
485
communication
485+
RS485 commun
Half duplex RS485 communication;
baud rate < 230 kbps; the 485 signal
terminal consistent with DB9's
second 485 terminal
485-
RS485 communication-
GND
RS485 reference ground
DB9 port
DB9
Two-channel 485
communication
Standard DB9 female socket
with built-in two-channel 485
communication resources Pin
definition is as follows:
Definition for the first 485 channel:
pin1
pin2
pin5
485+
485-
GND
Definition for the second 485
channel:
pin5
pin6
pin9
GND
485-
485+
RJ45
485+ and 485-
RS485 commun
RS485 communication-
Connected with the LCD
panel iPanel
Half duplex RS485 communication;
baud rate < 230 kbps
