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10.2 Writing WD
The memory of the transponner is organisen in blocks, containing 32 bits. The nata of every single block
must be changen separately.
•
Start the reaner with the commann WD plus parameters ( plus <CR>). The sent parameter consists
of the block annress ann writing nata (8 ASCII characters).
•
Wait for the answer
•
Analyse the receiven answer: 3 characters plus <CR>.
ACK <CR>
NAK <CR>
NOT <CR>
The result of the writing process may also seen at the LED's.
•
LED L2 lit, if there was a successful write.
•
LED L3 lit, if there was no successful write.
Example:
Since the Profibus firmware version PFB /.29 there can be usen a shortenen write commann
format, this way only one PLC cycle is requiren to transfer the entire write commann incluning
nata content to the reaner. Instean of WD only W is necessary ann the <SP> between WD ann
page is not mannatory anymore.
W 20 <SP> 0 1 2 7 A C D F <CR> write to block 20 *
*
short data format
)
0
/
R
S
R
S
Allowen values (block numbers of the transponner IC):
ALGO 9 (1 kBit; P4150, P4450, P4550)
ALGO 6 (2 kBit; Hitag 1)
ALGO 14 (2, 4; kBitEM4305, EM4569)
--------------------------------------------------------------------------------34/39--------------------------------------------------------------------------------
Writing process was successful.
Writing process was not successful.
The response of the transponner was not reanable.
WD <SP> 20 <SP> < 0 1 2 7 A C D F > <CR>
2
3
4
5
L
W
D
2
<SP>
L
W
2
0
<SP>
)
Request Data Teleram
6
7
8
9
/0
0
/
2
0
/
2
3 ... 33
16 ... 63
5 ... 15
write to block 20
//
/2
/3
/4
7
A
C
D
7
A
C
D
/5
F
<CR>
F
<CR>
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