Feig Electronic OBID i-scan ID ISC.PR101 User Manual

OBID i-scan
®
System-Manual ID ISC.MR/PR/PRH101
FEIG ELECTRONIC GmbH Page 18 of 131 H60301-3e-ID-B.doc
Start bits: 1
Data bits: 8
Stop bits: 1
Parity: even (default)
odd
none
Timing conditions:
Starting delay:
Before sending a starting sign (length byte) of a protocol, there must be a delay of
minimum 5 ms.
Host → Reader:
..
Reaction time Starting delay .. ..
Õ 5...n ms ÖÕ min. 5 ms Ö
Host ← Reader:
.. .. ..
Data timeout:
Within one protocol, the characters have to follow each other in intervals of maxi-
mum 12 ms.
Õ max. 12 ms ÖÕ max. 12 ms ÖÕ max. 12 ms Ö
Host → Reader:
Char n Char n+1 Char n+2 ..
2.2. CRC16 Calculation Algorithm
Polynom: x
16
+ x
12
+ x
5
+ 1 ⇒ CRC_POLYNOM = 0x8408;
Start Value: 0xFFFF ⇒ CRC_PRESET = 0xFFFF;
C-Example:
unsigned int crc = CRC_PRESET;
for (i = 0; i < cnt; i++) /* cnt = number of protocol bytes without CRC */
{
crc ^= DATA[i];
for (j = 0; j < 8; j++)
{
if (crc & 0x0001)
crc = (crc >> 1) ^ CRC_POLYNOM;
else
crc = (crc >> 1);
}
}

Feig Electronic OBID i-scan ID ISC.PR101 Specifications

General

Brand	Feig Electronic
Model	OBID i-scan ID ISC.PR101
Category	Other
Language	English