15
J3: RS-422/485 Connector (3x2 Header)
PIN Description PIN Description
1
TX-
2
TX+
3
RX+
4
RX-
5
GND
6
VCC
1
5
6
2
JP4: COM 2 use RS-232 or RS-422/485 Select
Options
Settings
RS-232 (default)
Open
RS-485 by Auto (*1)
Short 1-2, 3-4, 5-7, 8-10
RS-485 by –RTS (*-1)
Short 1-2, 3-4, 7-9, 8-10
RS-422/485 Full Duplex (*2)
Short 1-2, 3-4, 6-8
1
9
10
2
NOTE:
*1: 2-wires RS-485 function
*2: 4-wires point-to-point full duplex function
4-wires point-to-point full duplex RS-422/485
Typical RS-485 2-wires Mutildrop Network
3.11 Ethernet Connector
The HS-7250/HS-7650 series provides two external RJ-45 interface
connectors. Please refer to the following for its pin information.
JP1: Onboard LAN 2 Enabled/Disabled Select
Options
Settings
Enabled (default)
Short 1-2
Disabled
Short 2-3
1
3
