Rs232 command protocol, Rs232 command protocol quick reference – Network Technologies UNIMUXUSBVXHD User Manual

Page 38

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NTI UNIMUX SINGLE-USER HIGH DENSITY VGA USB KVM SWITCH

33

RS232 Command Protocol

Host controller commands supported by the unit are defined below.

RS232 Command Protocol Quick Reference


Legend: (All numbers must be two digits)
SW :

Switch (01-15)

IP :

Input Port/CPU (01-MAXINPUTS)

BR :

Baud Rate Code

<CR>:

Carriage Return (Hex 0xD)

OP :

Output/User Port (01-MAXOUTPUTS)

Command String

Good Response

Description

CS SW,IP,OP

*<CR>

Connect one User port To CPU port

RO SW,OP

*<CR>IP<CR>

Read Connection For User Port

CB 00,BR

None

Change Baud Rate For All Switches
BR = 12 (1200), 24 (2400), 48 (4800), 96 (9600), 19 (19200),
38 (38400), 57 (57600), 11(115000) (9600 is the default)

RV SW,00

*<CR>string\0<CR>

Read NTI Version String

RU SW

*<CR>IP,OP<CR>

Read Unit Size

SS SW,00

*<CR>

Disable Autostatus feature (see below)

SS SW,01

*<CR>

Enable Autostatus feature (see below)

GO SW OP

*<CR>go SW OP IP<CR>

Report the User port that is connected to the CPU port

GM SW,00

*<CR>go SW OP IP<CR>
(all connections)

List all switch User port connections; all User ports to all CPU ports

If the first field is not a known command (as listed above) or SW field is different from the serial address programmed in the switch
memory, the command will be ignored. If the SW field corresponds to the serial address, but the syntax is wrong after this field,
the switch will answer with ?<CR>.

Syntax example:
CS 01,05,02<CR> (insert the space and commas as shown)
which means “At the switch with unit address 01, connect CPU port 05 to user port 02”
The switch will answer with:
<CR>
The HEX code representation of example above is:

Byte 1 Byte 2 Byte 3

Byte 4

Byte 5

Byte 6

Byte 7

Byte 8

Byte 9

‘C’

(0x43)

‘S’

(0x53)

Space
(0x20)

Switch – 1st digit

(0x30)

Switch – 2nd digit

(0x31)

‘,’

(0x2C)

Output – 1st digit

(0x30)

Output – 2nd digit

(0x35)

‘,’

(0x2C)

Byte 10

Byte 11

Byte 12

Input –1st digit

(0x30)

Input –2nd digit

(0x32)

<CR>

(0x0D)


Response:

Byte 1

Byte 2

‘∗’

(0x2A)

<CR>

(0x0D)

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