John Deere RFID Reader Operator’s Manual Front Rear 1
CAUTIONARY NOTE AND WARNING NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Introduction The John Deere RFID Reader was designed for use in a Pinnacle Cotton Harvesting environment. It may either be mounted in the bale chamber of the harvester, or on ginning equipment within a cotton gin. In both situations, the functionality of the reader is the same. When triggered to do so, the reader emits an RF signal in order to read an RFID tag identifier. Once the ID is obtained, the reader sends the ID back to the source, depending on how it was triggered.
Mechanical Interface Device Footprint (all dims in mm) 4
Mount Design (all dims in mm) As seen above, there are 3 threaded mounting holes on the device. The hardware necessary to mount the device are 3 xx bolts. The thread depth into the device is x mm. The bolt pattern measurements can be taken from the above drawing, or the device directly.
Electrical Interface Male and Female Electrical Connector Pin 12 11 10 9 8 7 Function Pin Continuous Power Configuration Rx- Serial CANL Bootstrap GROUND 1 2 3 4 5 6 Function Input (5 - 24v) Read Trigger Input (5 - 24v) Relay Driver Tx - Serial CANH Output (5 - 24v) Relay Driver Switched Power Pin Function Table 12 Pin Deutsch Connector - part # = DT15-12PA-P010 Note: The blacked out pins should not be connected or grounded in a non-pinnacle mounted configuration, leave them in an open circuit config
Serial-Read Interface The external RS-232 bus shall operate at a baud rate between 4800 and 614400 Bps, inclusive. Several proprietary messages shall be used. Each proprietary message shall be of the format: “:RFID “ (data) “?” (checksum) “\r\n” (note the mandatory space after :RFID) The total length of each message is restricted to 80 bytes. The checksum shall be in the form of two uppercase ASCII hex characters. This value is calculated by adding up each of the data bytes (restricting the sum to 8 bits).
Responses The following segments are sent from the RFID reader: Segment Description BadChecksum(cc) Message sent out in response to a message with a bad checksum (the correct checksum is included in parenthesis) BadSegment Message sent out in response to a message with a bad segment CommEstablished Message sent out when communication with the IM4 is established Heartbeat Heartbeat message sent once every ten seconds. Used to debug power or communication issues.
Hardware-Read Interface Standard Operation It is also possible to communicate to the device without using a standard communication protocol. By enabling a hardware command, you can determine if a tag has been seen by the device or not. A formal protocol is still necessary to determine the ID of the tag seen. Activating a hardware command will still result in the ID being sent over the RS232 connection.
