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3
Introduction
This is a reference manual to describe the interface provided between an AMX NetLinx system and an
Extron IN1508 Switcher/Scaler
.
The Extron IN1508 Switcher/Scaler supports an RS-232 serial protocol.
The required serial communication settings are a baud rate of 9600
,
8 data bits, 1 stop bit, no parity, and
handshaking off
.
The cable for this device is FG#10-752. The wiring diagram for this cable is as follows
AMX NXI
AMX NI
Extron Crosspoint (Male DB9)
(Gnd) 1
(Gnd) 5 __________ (Gnd) 5
(Rx) 2
(Rx) 2 __________ (Tx) 2
(Tx) 3
(Tx) 3 __________ (Rx) 3
This module package contains only the COMM module. There are no Main or UI .axi files provided.
Overview
The COMM module translates between the standard interface described below and the switcher serial
protocol. It parses the buffer for responses from the switcher, sends strings to control the switcher, and
receives commands from the main program.
The following diagram gives a graphical view of the interface between the interface code and the Duet
module.
Some functionality in the device interface may not be implemented in the API interface. In cases where
device functions are desired but not API-supported, the PASSTHRU command may be used to send any
and all device-protocol commands to the device. See the PASSTHRU command and the
Adding
Functions to Modules
section for more information.
Implementation
To interface to the AMX Extron IN1508 Switcher/Scaler module, the programmer must perform the
following steps:
1.
Define the device ID for the switcher that will be controlled.
Extron
IN1508
NetLinx
COMM
Module
NetLinx
Main
Program
Virtual
Device
