Escort LRP2000 ABxS Command 10H Set Output, Remarks LSB Bit Output D Output C Output B Output a

RFID Communications

6.4.24 ABxS Command 10H: Set Output

DESCRIPTION

Command 10H sets the states of the output lines and output LEDs “A” through “D.”

DISCUSSION

This command sets the state of the digital output lines using a one-byte parameter, Output Status. The least significant nibble of the Output Status Byte determines the status of the outputs. The least significant bit of this nibble corresponds to Output A. The most significant bit of this nibble corresponds to Output D. The most significant nibble of the Output Status Byte is reserved and should be set to 0H. An output bit set to one turns the corresponding LED on and closes the electronic switch of the output, allowing current to flow through the output circuit. An output bit reset to zero turns the corresponding LED off and opens the electronic switch in the output circuit. The following chart shows the hex values for all combinations of Output Status Bytes. To reset all output bits, issue the command with 00H for the Output Status Byte.

MSB	LSB	Remarks	LSB Bit 3	LSB Bit 2	LSB Bit 1	LSB Bit 0
			Output D	Output C	Output B	Output A
00H	00H	Reset A, B, C, D	0	0	0	0
00H	01H	Set Output A - Reset B, C, D	0	0	0	1
00H	02H	Set Output B - Reset A, C, D	0	0	1	0
00H	03H	Set Output A, B - Reset C, D	0	0	1	1
00H	04H	Set Output C - Reset A, B, D	0	1	0	0
00H	05H	Set Output A, C - Reset B, D	0	1	0	1
00H	06H	Set Output B, C - Reset A, D	0	1	1	0
00H	07H	Set Output A, B, C - Reset D	0	1	1	1
00H	08H	Set Output D - Reset A, B, C	1	0	0	0
00H	09H	Set Output A, D - Reset B, C	1	0	0	1
00H	0AH	Set Output B, D - Reset A, C	1	0	1	0
00H	0BH	Set Output A, B, D - Reset C	1	0	1	1
00H	0CH	Set Output C, D - Reset A, B	1	1	0	0
00H	0DH	Set Output A, C, D - Reset B	1	1	0	1
00H	0EH	Set Output B, C, D - Reset A	1	1	1	0
00H	0FH	Set Output A, B, C, D	1	1	1	1
Example

Field	Remarks
Command	Command number in hex preceded by AAH
Output	Pattern hex value for the bit output settings
Message Terminator	FFFFH

The following example sets Output B only and resets A, C, and D.

Command from Host

MSB	LSB	Remarks
AAH	10H	Perform Command 10
00H	02H	Set Output B
FFH	FFH	Message Terminator

Response from Controller

MSB	LSB	Remarks
AAH	10H	Command Echo
FFH	FFH	Message Terminator

LRP2000 Passive Reader/Writer 88