CSE-H55N User
’
s Manual Ver. 1.2
- 9 -
http://www.ezTCP.com
1.6
Interfaces
1.6.1 Serial Interface
CSE-H55N has a serial port for user serial device (1,200bps ~ 230,400bps). This port is
interfaced with 6-pins terminal block and the each pin should be fixed by a flat-head
screwdriver driver.
Figure 1-7 6 pins Terminal block
Pin Assignment for RS-422
Number
Name
Description
Level
I/O
Etc.
1
TX +
Transmit Data +
RS422
OUT
Required
2
TX -
Transmit Data -
3
GND
Ground
-
-
Required
4
RX +
Receive Data +
RS422
IN
Required
5
RX -
Receive Data -
6
GND
Ground
-
-
Required
Table 1-3 pin assignment of the RS422
Pin Assignment for RS-485
Number
Name
Description
Level
I/O
Etc.
1
TRX +
Transmit / Receive Data +
RS485
OUT
Required
2
TRX -
Transmit / Receive Data -
IN
3
GND
Ground
-
-
Required
6
GND
Ground
-
-
Required
Table 1-4 pin assignment of the RS485
We recommend to connect with GND pin according to EIA/TIA-485A aggrement.
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