C H A P T E R 3 : R F I D C O M M A N D S

C O M M A N D F 2 :

S T A R T / S T O P R E P E T I T I V E C O M M A N D

D E S C R I P T I O N

Command F2 is used to instruct the HS500E to continuously repeat a specified RFID command. Note that only Commands 02, 03 and 05 are repeatable.

To begin repeating a command, set the Overall Length to a value of 0x0006 or greater. To stop this command, change the Overall Length to 0x0000 and re-issue the command (or cycle power to the unit).

E X A M P L E

This example will instruct the HS500E to repeatedly read 4-bytes of data beginning at address 0x0001 of tag memory. The Timeout value is set for 5 seconds (0x0032 = 50 decimal, 50 x .10 = 5 seconds) for the completion of this command.

Command F2: Start/Stop Repetitive Command – Command Structure

Word

 

Field Name

MSB

 

LSB

Word

#

 

 

 

 

 

Value

1

 

Overall Length

00

 

06 + number of

0006

 

 

 

 

 

additional words

 

 

 

 

 

 

(for Write and Fill

 

 

 

 

 

 

Commands only).

 

 

 

 

 

 

To stop, set LSB to

 

 

 

 

 

 

0x00.

 

2

 

MSB = Repeat Command Flag: 0xF2

F2

 

02 (03 or 05 for

F202

 

 

LSB = Command ID to be repeated

 

 

Write and Fill

 

 

 

 

 

Repeat)

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

MSB is used to indicate Fill Data

00

01

0001

 

 

Byte Value when second word is

 

 

 

 

 

 

0xF205. MSB should be 0x00 when

 

 

 

 

 

 

second word is F202 or F203.

 

 

 

 

 

 

LSB = Node ID Number (will always

 

 

 

 

 

 

be 0x01 for the HS500E)

 

 

 

 

4

 

Timeout Value

00

32

0032

5

 

Start Address

00

01

0001

6

 

Read/Write Length

00

04

0004

7

 

Data Byte Value(s) for Write (only

ZZ

 

ZZ

ZZZZ

 

 

applicable when word 2 is F203).

 

 

 

 

 

 

 

 

 

 

 

H S 5 0 0 E – O P E R A T O R ’ S M A N U A L

P / N : 1 7 - 1 3 0 5 R E V 0 2 ( 1 2 - 0 5 )

 

P A G E 3 3 O F 8 2

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Image 33
Emsa HS500E manual Word Field Name, Value, Applicable when word 2 is F203