Cut Sheet

Denions for ASCII Data Values For the ALL Measurement Mode
Character Ch 4 Ch 3 Ch 2 Ch 1
6 0 1 1 0
5 0 1 0 1
4 0 1 0 0
3 0 0 1 1
2 0 0 1 0
1 0 0 0 1
0 0 0 0 0
7.4 Binary Format Data Transmission
There are two binary formats. The one used depends upon which
measurement modes are selected. For the ALL measurement
mode, each data byte conveys the status of eight consecuve
beams. Each bit of the byte is directly related to the status of an
individual channel.
For example, if the rst eight beams are as shown, then the data
byte has the hex value of 0x2d or 45 decimal.
If the array has 32 opcal channels, then there would be 4 data
bytes represenng the status of all 32 opcal channels. The other
measurement modes use two bytes to represent the measured
value. The rst of the two bytes is the most signicant.
For example, the value of 262 for the FBB measurement mode is
coded by the two-byte number: 0x01 0x06.
Channel Status Binary Code
1 Blocked 1
2 Clear 0
3 Blocked 1
4 Blocked 1
5 Clear 0
6 Blocked 1
7 Clear 0
8 Clear 0
Binary Transmission has three independent opons. These opons are independently selected and are used to custom-congure the
serial data format.
• Suppress Clear Data—applicable when the sensor is unobstructed. While the sensor is blocked, serial data is
transmied; once
the sensor is unobstructed, the “clear” data is
transmied once, and then no further data transmission occurs unl the sensor is
again blocked.
• Suppress Header—serially transmits the array data bytes. The three header bytes are not transmied.
• Compress Data—aects the data bytes for the measurement modes excluding the ALL mode. Except for the ALL mode, the
analysis modes use two bytes to transmit the appropriate informaon. For cases where the sensor cannot provide a result
greater than 255, the Compress Data opon will provide this data in one byte.
For example, assume that you have a 48-channel sensor with a last beam blocked of 35 and a controller ID of “B.” Assume two binary
format opons. The rst opon is the standard Binary Transmission format. The second format will use the Suppress Header and
Compress Data opons. The two strings would be as follows:
With Binary Transmission: 0x1c B 0x00 0x23 0x0a (a total of 5 bytes per scan)
With Binary Transmission, Suppress Header, Compress Data: 0x23 (1 byte per scan)
A-GAGE
®
MINI-ARRAY
®
Measuring Light Screen System
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