Service manual

EXTERNAL SERIAL CONTROL PROTOCOL
B-18
April 2001
Part No. 001-9800-203
EVENT PTT PRESSED
Function
: This indicates that the PTT is currently
asserted. The event input to generate this message
is design specific.
Origin
: External Device
Format
:
Data
: None
EVENT PTT RELEASED
Function
: Indicates that the PTT has been negated. The
event input to generate this message is design
specific.
Origin
: External Device
Format
:
Data
: None
EVENT ROTARY
Function
: This indicates that the rotary switch has had
its value changed.
Origin
: Any device on bus.
Format
:
Type
:
Relative:
0 through 63: 0x00 through 0x3f
–1 through –64: 0x7f through 0x40
0x80 through 0xff are reserved
EVENT SOUND
Function
: This indicates that the destination unit
should provide the specified audio alert sound.
There are several internal conditions that can cause
the subscriber unit to internally stop a sound or
honk cycle. Only those events that stop a contin-
uous operation are sent as event notifications from
the subscriber unit.
Origin
: Any device on bus.
Format
:
Type
:
0x00 - Stop any active sound or horn honk
0x01 - Start intercept tone
0x02 - Start busy tone
0x03 - Start horn honk cycle
0x04 - Sound ring tone once
0x05 - Sound beep tone once
0x06 - Sound loud beep tone once
EVENT SYSTEM SELECT
Function
: Directs the subscriber unit to go to the
system indicated by the system index number of
the currently selected bank. This message also noti-
fies the external device when a new system is
selected. The subscriber unit goes to the last
selected group in that system.
Origin
: Any device on the bus.
Opcode
1 byte
0x09
Opcode
1 byte
0x0a
Opcode Type
8 bits 1 byte
0x50
Opcode Type
8 bits 1 byte
0x46