22
Remote switching control
The port switching functions of the ServSwitch CX and
ServSwitch CX with IP units can be remotely controlled
by an RS232 link to the serial communication port on
the rear panel, labelled as
COM1/Upgrade
.
The sending device must use the following RS232
communication settings:
Baud rate: 19200 bps
Data bits:
8
Parity: None
Stop bits:
1
No handshaking is implemented, however, valid command characters will be
echoed back to the sending device.
The value of the byte received via the serial link determines which of the four
user ports should be linked through to the 24 host computer ports. Each
user port can be individually switched to required ports. The table given here
summarises the valid control codes:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 0
User 1
10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 60 61 62 63 64 65 66 67 71
User 2
20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 68 69 6A 6B 6C 6D 6E 6F 72
User 3
30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 80 81 82 83 84 85 86 87 73
User 4
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 88 89 8A 8B 8C 8D 8E 8F 74
Host computer port/channel
(video off)
Cable from serial
control device
ServSwitch CX
rear panel
