User Manual

Point Six, Inc. 161 Prosperous Place - Lexington, KY - 40509- http://www.pointsix.com - 859-266-3606 - Fax [phone]
2
Packet Description
X2 Object Counter” (11/10)
IDSSSSSSSSooooooffggggCCCCKK<CR>
Note: All fields are in ASCII Hex
“ID”
The x2 object counter device type field: “DualCounter” has device type 11 hex. A 10 hex when in
service mode.
“SSSSSSSS”
The MS-30 bits of these 4-bytes are the serial number of the sensor. The LS-2 bits are the status
flags for the open and closed beam status. An Open beam exists whenever the beam cannot be
seen. A Closed beam exists whenever the beam can be seen. The LS bit (bit-0) is the Open beam
state flag and the next most significant bit (bit-1) is the Closed beam state flag. Whenever both these
bits are low a BLOCKED state exists. Blocked occurs whenever the IR beam is blocked (Open) for
more than 6.5 seconds.
“oooooo”
This 24-bit field is the Object Counter stored LS-byte first.
“ff”
This 8-bit field is the Fringe Performance Event Counter. A non-zero value in this field indicates that
fringe IR reception exists and should be corrected for proper performance of the counter. This count
returns to zero when proper alignment exists.
“gggg”
This 16-bit field is the Total-Blocked-Time in accumulated seconds stored LS-byte first.
This counter accumulates the total time the beam has been blocked in seconds and is cleared
To zero when the object counter is cleared.
“CCCC”
This field is the CRC-16 error check as was originally received and checked. This CRC is over the
first 11 bytes of the packet starting with the device type and ending with but not including CRC-16.
“KK”
This field is the mod 256 sum of all the binary data values as represented by the ASCII hex values in
the response but does not include the <CR>.