Broadcast Tools SRC-16, Installation And Operation Manual

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9
SRC-16 Installation and Operation Manual
INSTALLATION
Binary Commands
All commands start with a 2Ah (ASCII *)
The first byte contains the board ID and the byte count iiibbbbb
The byte count is the number of bytes after the byte containing the byte count
including checksum. The second byte contains an 8 bit command. Some commands
are followed by data bytes.
Checksum is the LSByte of the sum of all bytes preceding checksum including start.
Binary commands must be received as a packet. If 50 ms or more passes after a
character is received, with no new character following, the SRC-16 will begin look-
ing for a new string if no valid data packet has been received.
SRC-16 Commands
Command Additional Data BytesFunction
Test Strings
42h 2A 02 42 6E Set serial speed to 2400
43h 2A 02 43 6F Set serial speed to 9600
44h 2A 02 44 70 Set serial speed to 19200
45h 2A 02 45 71 Set serial speed to 38400
46h 2A 02 46 72 Enable error & good responses
47h 2A 02 47 73 Disable error & good responses
48h n 2A 03 48 01 76 Latch output n (00 – 0F)
49h n 2A 03 49 01 77 Unlatch output n (00 – 0F)
4Ah n t 2A 04 41 01 0A 83 Pulse output n (00 – 0F), t= time (1-
63h =.1-9.9sec)
4Bh
n 2A 03 4B 01 79 Poll output n (00 – 0F) (see
55h)
4Ch
n 2A 03 4C 01 7A Poll input n (00 – 0F) (see 55h)
4Dh 2A 02 4D 79 All Output status request (see 52h)
4Eh 2A 02 4E 7A All Input status request (see 53h)
4Fh 2A 02 4F 7B Unit version request (see 54h)
Response from SRC-16 Function
50h Error response if enabled by 46h
51h Good response if enabled by 46h
52h n Response of 4Dh, outputs are sent as 1
byte
53h
n Response of 4Eh, inputs are sent as 1
byte
Also sent when any input changes state
54h nn Response to 4Fh outputs version, (ie
01h, 03h = ver 1.02)
55h n Response to 4Bh or 4Ch for polled output or input where the
three highest bits of n are used to identify if an input/output is low/high and the low-
est 4 bits identify the input or output. n = 00h – 0Fh if input n is low, n = 20h – 2Fh
if input n is high, n = 40h – 4Fh if output n is low and n = 60 – 6F if output n is high.
n=cccxnnnn where ccc = 000 = input low, 001 = input hi, 010 = output lo, 011 = out-
put hi. nnnnn lowest 5 bits used to identify the input or output