Model 5010 Time Code Master Manual
Page 5-2
Revision
3.1.1
SERIAL REMOTE CONTROL PROTOCOL
5.1.2. Data
Format
The composition of the bit serial data format is as follows:
1 START + 8 DATA + 1 1 STOP
START
BIT
D0
(LSB)
D1
D2
D3
D4
D5
D6
D7
(MSB)
PARITY
(EVEN)
STOP
BIT
EVEN PARITY: The total of logic 1's in D0 to D7 and PARITY equals an even number
"1" (MARK)
"0" (SPACE)
One of four baud rates is selected using the Engineering SETUP menu. When using the RS-422
standard the preferred baud rate is 38.4 KBaud. When using the RS-232 standard the preferred baud
rate is 19.2KBaud.
5.2. COMMUNICATIONS
PROTOCOL
The Controller is denoted as the normal sender of a command (usually a computer). The Device is
denoted as the normal sender of a Response (the 5010 unit).
"
All command values, arguments and data values shown in this document are
expressed in hexadecimal format unless otherwise noted.
R(STX)
SELECT
R (MESSAGE)
ERROR (Parity,checksum
undefined command, etc)
TIMEOUT
(10 msec)
T(NAK)
T(STX)
T (MESSAGE)
T(ACK)
R (UNDEFINED)
R (BREAK)
T(ACK)
R(Enter Broadcast)
no response required
Broadcast
R(Enter Select)
T(ACK)
Figure 5-1: Communications Protocol State Diagram
The communications protocol is described in Figure 5-1. The 5010 (Device) immediately enters the
select state upon power-up and remains there unless directed by an Enter Broadcast Cmd (02 hex) to
