Kramer protocol – Kramer Electronics PL-8 User Manual

Page 17

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Kramer Protocol

INSTRUCTION

DEFINITION FOR SPECIFIC INSTRUCTION

NOTE

DESCRIPTION

INPUT

OUTPUT

IDENTIFY MACHINE

video machine name
audio machine name
video software version
audio software version
RS422 controller name
RS422 controller version
remote control name
remote software version
Protocol 2000 revision
Control data machine name
Control data software version

Request first 4 digits
Request first suffix
Request second suffix
Request third suffix
Request first prefix
Request second prefix
Request third prefix

NOTES on the above table:
NOTE 1

– When the master switcher is reset, (e.g. when it is turned on), the reset code is sent to the PC. If this code is sent to

the switchers, it will reset according to the present power-down settings.

NOTES on the above table:

NOTE 1

- When the master switcher is reset, (e.g. when it is turned on), the reset code is sent to the PC. If this code is sent to

the switchers, it will reset according to the present power-down settings.

NOTE 2

- These are bi-directional definitions. That is, if the switcher receives the code, it will perform the instruction; and if

the instruction is performed (due to a keystroke operation on the front panel), then these codes are sent. For example, if the

HEX code

was sent from the PC, then the switcher (machine 3) will switch input 5 to output 8. If the user switched input 1 to output 7

via the front panel keypad, then the switcher will send HEX codes:

to the PC.

When the PC sends one of the commands in this group to the switcher, then, if the instruction is valid, the switcher replies by

sending to the PC the same four bytes that it was sent (except for the first byte, where the DESTINATION bit is set high).

NOTE 3

- SETUP # 0 is the present setting. SETUP # 1 and higher are the settings saved in the switcher's memory, (i.e. those

used for Store and Recall).

NOTE 4

- The reply to a "REQUEST" instruction is as follows: the same instruction and INPUT codes as were sent are

returned, and the OUTPUT is assigned the value of the requested parameter. The replies to instructions 10 and 11 are as per

the definitions in instructions 7 and 8 respectively. For example, if the present status of machine number 5 is breakaway

setting, then the reply to the HEX code

would be HEX codes

NOTE 13

- This is a request to identify the switcher/s in the system. If the OUTPUT is set as 0, and the INPUT is set as 1, 2,

5 or 7, the machine will send its name. The reply is the decimal value of the INPUT and OUTPUT. For example, for a 2216,

the reply to the request to send the audio machine name would be (HEX codes):

81 (i.e. 128

dec

+ 22

dec

for 2

byte, and 128

dec

+ 16

dec

for 3

byte).

If the request for identification is sent with the INPUT set as 3 or 4, the appropriate machine will send its software version

number. Again, the reply would be the decimal value of the INPUT and OUTPUT - the INPUT representing the number in

front of the decimal point, and the OUTPUT representing the number after it. For example, for version 3.5, the reply to the

request to send the version number would be (HEX codes):

81 (i.e. 128

dec

+ 3

dec

for 2

byte, 128

dec

+ 5

dec

for 3

byte).

If the OUTPUT is set as 1, then the ASCII coding of the lettering following the machine’s name is sent. For example, for the

VS-7588YC, the reply to the request to send the first suffix would be (HEX codes):

81 (i.e. 128

dec

+ ASCII for “Y”; 128

dec

+ ASCII for “C”).

NOTE 27

–Bit 6 in the Output byte defines direction of the switched DATA (RS-232,RS- 485, RS-422). For bit 6=0 the

direction of the control DATA is from Input to Output; for bit 6=1 the direction of the reply DATA is oposite - from Output

to the Input.

Command

Example

Set relay On (Open)

0x02,0x81,0x80+Relay,0081

Set relay Off (Close)

0x02,0x80,0x80+Relay,0081

Read relay status

0x03,0x80,0x80+Relay,0081