IEI Technology PPC2-C-EHL Series, User Manual

Page: 63 / 100

PPC2-Cxxx-EHL Series Panel PC
Page 49
3.10.2 RS-232/422/485 Serial Port
The pinouts of the RS-232/422/485 serial ports are listed in the following table.
PIN NO. RS - 232 RS - 422 RS - 485
1 DCD TXD422 - TXD485 -
2 RXD
3 TXD --
4 DTR RXD422 - --
5 GND -- --
6 DSR -- --
7 RTS -- --
8 CTS -- --
9 RI -- --
Table 3-3: RS-232/422/485 Serial Port (COM3) Pinouts
3.11 Powering On the System
To power on the system, follow the steps below:
Step 1: Either connect the power adapter to the power jack or connect the power cable
to the 2 - pin power input terminal block. DO NOT connect both power connectors
to a power source at the same time. The pinouts of the power input connectors
are shown below.
Figure 3-32: Power Input Connector Pinouts
Step 2: Toggle the power switch on the I/O panel to the constant on position ( I ) to power
on the system. Step 0: