HT-CM400 NXP Semiconductors, HT-CM400 Datasheet - Page 38

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HT-CM400

Manufacturer Part Number
HT-CM400
Description
Ht Cm400; Ht Rm440 Family; Ht Rm800 Family Interface Protocol Reader - Host
Manufacturer
NXP Semiconductors
Datasheet
Communication Reader-Host
3.7.23 WritePitBlock
This Proximity Reader command sets the read/write device to permanent writing mode for a PIT
transponder to write a maximum of 16 data bytes onto it (from beginning of a block-address).
The read/write device attempts continuously to synchronize on and write to a PIT transponder. If
it succeeds and all checks report positive results, the device sends a no error message via the
serial interface. After that the read/write device returns to Normal Mode.
To put the read/write device back to normal mode, a StopCommand should be sent. Do not use a
Reset, since Reset can cause undesirable side effects (resetting output pins).
Additional information:
Data can also be written to the transponder using the Password Mode (see also commands
WritePitSecurity and WritePitPassword).
C-Function: void proloc_WritePitBlock (BYTE_T blkaddr, BYTE_T bytenmb, char *data);
Header-File: PROLBPH6.H
Serial protocol:
HOST - READ/WRITE DEVICE
blockaddr:
bytenmb = number of data bytes to write (1 bytenmb
READ/WRITE DEVICE - HOST
Status:
Htswp.doc/HS
bytenmb+3
0x02
Status
start address of write data (0
-1 ...
0 ... no error
'u'
BCC
SERIAL ERROR
blkaddr
data[0]
Page 38 (104)
Rev. 1.0
.......
blockaddr
data[bytenmb-1]
16)
7)
BCC
98-02-10

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