Extron electronic SW12 VGA Ars Switch User Manual


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SW8/12 VGA Ars • Control
3-2
Control
Remote Control via Simple Instruction Set (SIS
™
)
TheSW8/12VGAArsswitcherscanbecontrolledviaRS-232usingExtron’sSimple
Instruction Set (SIS
™
) commands.
TheRS-232portcommunicationsprotocolsare:9600baud,8databits,1stopbit,
no parity, and no flow control. Cable pinouts are shown in the table below.
Only pins 2, 3, and 5 are required. Disconnect all other conductors in the
attachment cable for proper operation.
Pin RS-232 Description RS-232 Control Port Connector
1 — —
DB9 Pin Locations
Female
51
96
2 Tx Transmit data
3 Rx Receive data
4 — —
5 Gnd Signal ground
6 — —
7 — —
8 — —
9 — —
Rules governing SIS commands include:
• SIScommandsconsistofoneormorecharacterspereld.
• Nospecialcharactersarerequiredtobeginorendacommandsequence.
• Whenacommandisvalid,theswitcherexecutesthecommandandsendsa
response to the host device.
• Allresponsesfromtheswitchertothehostendwithacarriagereturnanda
linefeed(CR/LF=
]
), which signals the end of a response character string.
• Astringisoneormorecharacters.
Switcher-initiated (unsolicited) messages
When a local event, such as a front panel operation or error condition, occurs, the
switcher responds by sending a message to the host. Switcher-initiated messages
are listed below:
(C) Copyright 2008, Extron Electronics SWy
VGA Ars, Vx.xx
]
The switcher issues the copyright message when it first powers on.
y = the number of inputs (8 or 12, depending on the model)
x.xx = the firmware version number
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