TriContinent C24000, Руководство по эксплуатации продукта

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Data Terminal (DT) protocol
C-Series Product Manual
111
Data Terminal (DT) protocol
The DT protocol can be used easily from any terminal or terminal emula-
tor capable of generating ASCII characters at 9600 or 38400 baud, 8
bits, and no parity. Table 9-4 lists each setting of the DT protocol.
DT protocol command block characters
The command block characters in the DT communication protocol are
described below.
Start character
The start character (ASCII “/” or hex 2Fh) indicates the beginning of a
message.
Pump address
The pump address is an ASCII character specific to each pump.
Table 9-4: DT Protocol communication details
Parameter Setting
Character Format
Baud Rate 9600 or 38400
Data Bits 8
Parity None
Stop Bit 1
Command block
(see "DT protocol command block characters"
below, for details)
1 Start character (ASCII “/” or
2Fh)
2 Pump address
2+n Data block (length n)
3+n End character (carriage
return, “CR” or 0Dh)
Answer block
(see "DT protocol answer block characters" below,
for details)
1 Start character (ASCII “/” or
2Fh)
2 Master address (ASCII “0” or
30h)
3 Status character
3+n Data block (if applicable)
4+n ETX (Ctrl C or 03h)
5+n Carriage return (“CR” or
0Dh)
6+n Line feed (0Ah)