TransCore Amtech IT2200, Инструкция по установке, обслуживанию и ремонту

Страница: 61 / 204

System Components
3-21
Table 3-2 Example of Condition Code Bit Programming for IT2235 Tag
Note: * Denotes that the data to be inserted in
±
XXX.XX is pulled from the balance/
tolling page specified in page 0000 configuration.
Another method of displaying a message on the IT2235 tag is by using the LCD
custom message feature. This method allows the user to write a 16-byte maximum
ASCII message to a page in the tag and then command the message written to that
page to display upon receipt of the sign-off command. The tag is commanded to
display this information by setting a hex data field in the sign-off command, which is
called the LCD message page pointer.
The LCD message page pointer is a one-byte field that points to the page where the
LCD message to display is stored in ASCII. The valid range for the page pointer is
02H to 0FH. If this field is non-zero, the tag, upon receipt of a general ACK
command, displays this ASCII data to the LCD display from the page specified in this
field. The A/V sequence specified in the A/V options bits are associated with this
action. All condition code bits are stored for later retrieval by cycling with the
pushbutton.
Features
The IT2235 Tag features include an alphanumeric LCD; red, yellow, and green
light-emitting diode (LED) visual indicators; an audio buzzer with varying tonal
qualities; and a pushbutton for displaying the last reported toll balance and the last
message written to the tag (see Figure 3-11). The alphanumeric display is visible in all
daylight and nighttime conditions by use of LCD technology and backlighting.
Bit Condition Message Indicator Tone Priority
7 Negative list Invalid Red Low 1
6 Insufficient funds Insuff Bal Red Low 2
5 Low battery Low Battery Flash red Low-Low-
Low 3
4* Conversion to cash/ticket Cur Bal=±XXX.XX Flash green Low-High 4
3* Account replenishment New Bal=±XXX.XX Flash green High-High 5
2 Good read/low balance Low Balance Yellow High-Low-
High-Low 6
1* Good read Toll=±XXX.XX Green High 7
0 Good read/Pass used Pass used Green High 8