SIS™ Programming and Control

SISProgramming and Control

RS-232 and RS-422 Links

The switcher has two serial ports that can be connected to a host device such as a computer running the HyperTerminal utility, an RS-232 capable PDA, or a control system. These ports make serial control of the switcher possible. The two serial ports are:

The rear panel Remote RS-232/RS-422 port, a 9-pin D female connector

The front panel Configuration (RS-232) port, a 2.5 mm mini stereo jack The default protocol for both ports is as follows:

9600 baud

no parity

8-bit

1 stop bit

no flow control

 

Rear panel Remote port

The rear panel Remote RS-232/RS-422 port (figure 4-1) can be configured for either RS-232 or RS-422. The port can operate at the 9600, 19200, 38400, or 115200 baud rate.

NThe rear panel Remote RS-232/RS-422 port can be configured from the front panel or using Simple Instruction Set (SIS) commands. See Selecting the rear panel Remote port protocol and baud rate in chapter 3, Operation, to configure the port from the front panel. See the Set serial port parameters command on page 4-21 to configure the port using an SIS command.

REMOTE

 

 

 

Pin RS-232 Function

RS-422 Function

1

 

RS232/RS422

1

Not used

Not used

6

2

TX

Transmit data

TX–

Transmit data (–)

 

 

 

3

RX

Receive data

RX–

Receive data (–)

 

 

 

5

9

 

4

Not used

Not used

 

5

Gnd

Signal ground

Gnd

Signal ground

 

 

 

 

 

 

 

 

6

Not used

Not used

 

 

 

7

Not used

RX+

Receive data (+)

 

 

 

8

Not used

TX+

Transmit data (+)

 

 

 

9

Not used

Not used

Figure 4-1 — Remote connector pin assignments

4-2 CrossPoint 450 Plus and MAV Plus Switchers • SIS Programming and Control

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Extron electronic MAV Plus, 450 Plus manual SIS Programming and Control, RS-232 and RS-422 Links, Rear panel Remote port