Problem with SONY 3CCD Camera(BRC-300)??

J.Y. wrote:

When I use visca protocol to control BRC-300 , it's perfect.
But , I Just can use 6 preset , why ??
Althought I can get every address byte when it move or stop.
I send the same address code is not working.
Can someone help me??

Not sure why only six presets are working for you. For the BRC-H700 the document states preset value is between 0 and $F. So sixteen total.

Packet to recall preset for BRC-H700 looks like this:
8x 01 04 3F 02 0p FF
x: is address (=1 to 7)
p: Memory number (=0 to Fh)

Do you have the protocol manual handy for the BRC-300? Email me and I'll take a look in the morning. I'm in the middle of Visca routing code currently. It routes RM-BR300 through a NI-3000, and allows control from either Netlinx or PTZ controller of a Visca bus. So far it works great, presets, tally, and all.

toddt wrote:

If I remeber right, the first 6 presets are all you can recall. There is a code block out there that will store the rest of the presets to the Code and recall them there. You might call AMX Tech Support and talk to them about it. It was 3 years or so ago that I used a BRC-300.

I would confirm preset value range in the protocol manual.

You should also be able to query XY/ZF, store in AMX, then recall XY/ZF to absolute posistion.

I could be wrong but the only reference I see to visca camera presets is this:

        SYSTEM_CALL 'SONCA00F' (CAM,SAVE_PRESET_MASK|PRESET3)
        SYSTEM_CALL 'SONCA00F' (CAM,PRESET3)

SYSTEM_CALL 'SONCA00F' only handles a 4 nibble (half-byte) pan value.

---

The range of the 5 nibble pan value is documented as:

$08A58 Right
$00000 Center
$F75A8 Left

or in decimal:

35416 - Right
0 - Center
-35416 - Left

The two's complement of $8A58 is $FFFF75A8

Use the lower 5 nibbles.

In the Netlinx environment an integer is 16 bits (4 nibbles), so be sure to use a long (32 bits / 8 nibbles) to store value from query.

This will be added to the beta libVISCA code I posted:

DEFINE_FUNCTION INTEGER
VISCA_set_pantilt_absolute_position_Ex(VISCAInterface_t interface, VISCACamera_t camera, char pan_speed, char tilt_speed, long pan_position, integer tilt_position)
{
  VISCAPacket_t packet;

  long pan_pos;
  integer tilt_pos;
  pan_pos= pan_position;
  tilt_pos= tilt_position;

  _VISCA_init_packet(packet);
  _VISCA_append_byte(packet, VISCA_COMMAND);
  _VISCA_append_byte(packet, VISCA_CATEGORY_PAN_TILTER);
  _VISCA_append_byte(packet, VISCA_PT_ABSOLUTE_POSITION);
  _VISCA_append_byte(packet, pan_speed);
  _VISCA_append_byte(packet, tilt_speed);
  _VISCA_append_byte(packet, TYPE_CAST ((pan_pos & $f0000) >> 16));
  _VISCA_append_byte(packet, TYPE_CAST ((pan_pos & $0f000) >> 12));
  _VISCA_append_byte(packet, TYPE_CAST ((pan_pos & $00f00) >> 8));
  _VISCA_append_byte(packet, TYPE_CAST ((pan_pos & $000f0) >> 4));
  _VISCA_append_byte(packet, TYPE_CAST  (pan_pos & $0000f));

  _VISCA_append_byte(packet, TYPE_CAST ((tilt_pos & $f000) >> 12));
  _VISCA_append_byte(packet, TYPE_CAST ((tilt_pos & $0f00) >> 8));
  _VISCA_append_byte(packet, TYPE_CAST ((tilt_pos & $00f0) >> 4));
  _VISCA_append_byte(packet, TYPE_CAST  (tilt_pos & $000f));

  return _VISCA_send_packet_with_reply(interface, camera, packet);
}

DEFINE_FUNCTION INTEGER
VISCA_get_pantilt_position_Ex(VISCAInterface_t interface, VISCACamera_t camera, long pan_position, integer tilt_position)
{
  VISCAPacket_t packet;
  integer err;

  _VISCA_init_packet(packet);
  _VISCA_append_byte(packet, VISCA_INQUIRY);
  _VISCA_append_byte(packet, VISCA_CATEGORY_PAN_TILTER);
  _VISCA_append_byte(packet, VISCA_PT_POSITION_INQ);
  err=_VISCA_send_packet_with_reply(interface, camera, packet);
  if (err!=VISCA_SUCCESS)
    return err;
  else
    {
      if(interface.ibuf[3] = $f)  // if mantissa make a negative long
      {
	pan_position = (((interface.ibuf[4] << 12) + 
		         (interface.ibuf[5] << 8)  + 
		         (interface.ibuf[6] << 4)  + 
		          interface.ibuf[7])        | $ffff0000); 
      }
      else
      {
	pan_position = (interface.ibuf[4] << 12) + 
		       (interface.ibuf[5] << 8)  + 
		       (interface.ibuf[6] << 4)  + 
		        interface.ibuf[7]; 
      }
      tilt_position = TYPE_CAST((interface.ibuf[8]  << 12)  + 
                                (interface.ibuf[9]  << 8)   + 
		                (interface.ibuf[10] << 4)   +
		                 interface.ibuf[11]); 

      return VISCA_SUCCESS;
    }
}