Moxa Technologies 2140 - Manual (Page 13)

Introduction
Rear Panel
8: COM1 & COM 2
There are 2 COM ports on VPort 2140’s rear panel.
a. COM 1 (RS-232): This RS-232 serial port can connect with an RS-232 PTZ camera. For
RS-485 PTZ cameras, the administrator can use the General I/O terminal block’s COM 1
(RS-485) .
b. COM 2 (RS-232): This RS-232 serial port can connect to a modem, or you can use the
included null modem cable to utilize a dial-up network when Ethernet is not available . If
the Video Server is connected to the network via the Ethernet interface, you can also use
this RS-232 serial port to control an RS-232 PTZ camera.
9 & 10: General I/O terminal block
VPort 2140 provides a very flexible general I/O interface that can be used with security devices,
such as sensors, alarms, lighting fixtures, or door locks. Two green connectors are included in the
package to connect external devices. The general I/O terminal block has 20 pins for device control.
These pins can be divided into three categories based on their functions, including power source,
RS-485 and digital inputs and outputs.
No. Pin description Regulation
1 -
2 Output
12 VDC
+
Power Output, Max. 500 mA at 12V DC
3 NC Normal Close, Max. 1A, 24V DC or 0.5A, 125V AC
4 C Common, Short with NC at initial state
5
Relay
Output 2
NO Normal Open, Max. 1A, 24V DC or 0.5A, 125V AC
6 NC Normal Close, Max. 1A, 24V DC or 0.5A, 125V AC
7 C Common, Short with NC at initial state
8
Relay
Output 1
NO Normal Open, Max. 1A, 24V DC or 0.5A, 125V AC
9 + RS-485, Data+
10
COM 1
RS-485
- RS-485, Data-
11 +
12 Input
12 VDC
-
External Power Input, Min. 1.5A, 12-15V AC or DC
13 + Max. 50 mA, 12V DC
14
Digital
Input 1
- Ground
15 + Max. 50 mA, 12V DC
16
Digital
Input 2
- Ground
17 + Max. 50 mA, 12V DC
18
Digital
Input 3
- Ground
19 + Max. 50 mA, 12V DC
20
Digital
Input 4
- Ground
a. Power Source: There are 2 ways to connect to the power source. One is using the power
adaptor. The other is using Pin 11 and Pin 12 of the terminal block, which are for DC
power input. This DC power source can be either AC or DC, and should fall in the output
VPort 2140 User’s Manual 1-7