MMX 32 VGA MTP • Remote Control
Remote Control
MMX 32 VGA MTP • Remote Control
Simple Instruction Set control
Host-to-switcher instructions
The switcher accepts SIS commands through the remote
connector. SIS commands consist of one or more characters per
command field. They do not require any special characters to
begin or end the command character sequence. Each switcher
response to an SIS command ends with a carriage return and a
line feed (CR/LF =
), which signals the end of the response
character string. A string is one or more characters.
Switcher-initiated message
The following copyright message is initiated by the switcher
when it is first powered on. Vx.xx is the latest firmware version
number.
(c) COPYRIGHT 2005, Extron Electronics “MMX 32 VGA MTP”,
Vx.xx
Switcher error responses
When the switcher receives an SIS command and determines
that it is valid, it performs the command and sends a response
to the host device. If the switcher is unable to perform the
command because the command is invalid or contains invalid
parameters, the switcher returns an error response to the host.
The error response codes are:
E01 — Invalid input channel number (out of range)
E10 — Invalid command
E12 — Invalid output number (out of range)
E13 — Invalid value (out of range)
3-3
The switcher’s rear panel Remote connectors can be connected
to the serial port output of a host device such as a computer or
control system, or to a contact closure device such as the Extron
MMX 32 AAP panel (part #70-277-01, -11, or -21) or
MMX 32 MAAP panel (part #70-277-12 or -22). The contact
closure connectors are two 5-pole captive screw connectors,
which control outputs 1 and 2 separately.
REMOTE
RS-232
+5V
2
1
1 2 3
Tx Rx
CONT
A
C
T
Output 1 control
Output 2 control
RS-232
connection
Figure 3-1 — Remote connectors arrangement
Output Control
Momentarily short pin 1, 2, or 3 to ground to switch to that
input. Use the +5 V port when controlling the output with an
MMX 32 AAP/MAAP panel.
RS-232 Control
The RS-232 connection makes software control of the switcher
possible via the Extron Simple Instruction Set (SIS) or the Extron
Windows
®
-based control program. The RS-232 connector on the
MMX 32 VGA MTP is a 3-pole captive screw connector.
The RS-232 protocol for this connector is 9600 baud, 8-bit,
1 stop bit, no parity.
For RS-232 connect transmit, receive, and ground
connectors to control system or PC.
3-2
im Vertrieb von
CAMBOARD Electronics
www.camboard.de
Tel. 07131 911201
Fax 07131 911203