Controller - Institute of Transportation Engineers

4.4.5.15
1. Parameters and Options: Parameters are depicted in both the ASCII and
hexadecimal representations as the letter 'P' followed by a lower-case
character or number. These are interpreted as follows:
Pn: Value parameter, to be replaced by a value, using one ASCII
character per digit without leading zeros.
P1: Ordered and numbered parameter. One of a listed known
parameters with a specified order and number (Continues
with P2, P3, etc.)
Px: Display column number (1-40), using one ASCII character per
digit without leading zero.
Py: Display line (1-4) one ASCII character
...: Continue the list in the same fashion
Values of 'h' (0x68) and 'l' (0x6C) are used to indicate binary operations. 'h'
represents ON (high), 'l' represents OFF (low).
2. ASCII Representation: Individual characters are separated by spaces; these
are not to be interpreted as the space character, which is depicted by SPC.
3. Hexadecimal Representation: Characters are shown as their hexadecimal
values and will be in the range 0x00 to 0x7F (7 bits).
The Controller Circuit shall communicate via a SP6 asynchronous serial interface. The
interface shall be configured for 38.4 Kbps, 8 data bits, 1 stop bit, and no parity.
4.4.5.16
C50 ENABLE function when grounded by pins 1 and 5, shall be brought to Connectors
A1, pin B21 for the purpose of disabling the module channel 2, (SP4).
4.4.6 Electronic Bell
The Front Panel shall include an electronic bell to signal receipt of (0x07). The bell shall
sound at 2,000 Hz, with a minimum output rating of 85 dB upon receipt of (0x07).
Receipt of all other characters and ESC codes shall continue during the time the bell
sounds.
4.5 Type 2070-4 Power Supply Module
4.5.1 General
The Type 2070-4 Power Supply Module shall be independent, self contained Module,
vented, and cooled by convection only. The Module shall slide into the unit’s power
Standard for the ATC – Type 2070 March 29, 2001
66