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TZM1612
7.14 SET RS485 COMMUNICATION PARAMETERS
The host must send the following sequence:
CASR
followed by CR
The TZM1612 matrix replies:
ACK
(Hex 06) if the command has been performed correctly
NACK (Hex 15) if transmission errors have been detected
Example: to program the TZM1612 connected as unit with address 4, Tx speed of 2400
bit/sec and a reply time of 80 milliseconds, the following characters must be sent on line:
43 34 31 35 0D
8.0 CONTROL USING COMPUTER via RS485
On its site www.elprovideolabs.com, Elpro has made available software running under
Windows suitable for controlling the TZM1612 via RS232 or RS485.
If the user intends to develop personalized software, the protocols to be implemented both
RS232 and RS485 are available on the same site.
All functions of the TZM1612 can be controlled through transmission/reception by a
computer of strings of hexadecimal and ASCII characters.
The transmission protocol is of the master/slave multi-point type where the TZM1612 are the
slaves while the host that controls these is the master. Up to 8 TZM1612, identified by
addresses form 0 to 7 can be connected on the 485 bus.
The characteristics of the serial connection are:
8 data bits, no parity, 1 stop bit and speed settable to 2400 or 9600 baud
The transmission speed, the address of the unit and the reply time can be set with a suitable
command from RS232.
The reply time of the TZM1612 is the time that must pass between end of reception of the
command and the start of transmission of the reply.
This time allows the host to release the 485 bus and to prepare to receive without casing
conflicts.
The default parameters are as follows:
ELPRO Video Labs s.r.l.
Via della Praia 4/a FERRIERA di BUTTIGLIERA ALTA (TO) – ITALY
17
Tel.+39 0119348778 - FAX +39 0119348779
where: C is the character Hex 43
A is the address of the matrix (from 0 to 7)
S is the TX/Rx speed (1 or 2)
1 = 2400 bit/sec
2 = 9600 bit/sec
R is the reply time (from 1 to 7) in multiples of 16 msec.
1 = 16 msec
4 = 64 msec
7 = 112 msec
- speed
- unit address
- reply time
16x12 RGBHV & AUDIO MATRIX
2 = 32 msec
3 = 48 msec
5 = 80 msec
6 = 96 msec
= 9600 bit/sec
= 0 (30 hex)
= 32 ms4
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