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4-3
MGP 464 • Software Conguration and Control
PRELIMINARY
N
The cables used to connect the RS-232/422 port to a computer or control system
may need to be modified by removing pins or cutting wires. If unneeded pins are
connected, the processor may hang up. See chapter 2, "Installation," for more
information on wiring the connectors.
Communication software
There are several programs that enable you to connect the MGP 464 to a
computer or control device via the RS-232/422 interface, and to enter commands.
HyperTerminal for Windows is one such program that is commonly used on PCs.
In addition, the MGP has a Windows-based control software program, discussed
later in this chapter, that is available through the RS-232/422 port, the front panel
Cong port, or via Ethernet. (See the MGP 464 software’s help for information on
using it to congure the MGP.)
For any program that you use, set up communication using the following protocol:
Baud rate: 9600
Data bits: 8
Parity: None
Stop Bits: 1
Flow Control: None
Using Simple Instruction Set (SIS) Commands
Host-to-MGP communications
The MGP 464 accepts SIS (Simple Instruction Set) commands through the
RS-232/422 port on the rear panel, the RS-232 port on the front panel, and the LAN
port. 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 response to a command ends with a carriage return and a line feed (]), which
signals the end of the response character string. A string is one or more characters.
MGP-initiated messages
When a local event such as a front panel selection or adjustment takes place, the
MGP 464 responds by sending a message to the host. No response is required from
the host. Examples of MGP-initiated messages are listed below (underlined).
(c) Copyright 2007, Extron Electronics, MGP464, Vx.xx 60-771-xx
The MGP 464 sends the copyright message when it is rst powered on. Vx.xx
is the rmware version number, and 60-771-01 and 60-771-02 are the part
numbers for MGP 464 or MGP 464 DI, respectively.
Www, DD Mmm yyyy hh:mm:ss
The current date and time are displayed following the copyright message at
power-up if the connection is via the Internet. (Www are the rst three letters
of the day of the week; e.g., Mon, Fri.)
Reconfig
Reconfig
Reconfig
Reconfig
The MGP sends a Recong message as each of the four windows is congured
via the new connection.
Out n In nn (where Out n is the window number, and In nn is the input number).
The MGP sends this response when an input is switched.