IDENT-I • IVI-KHA6-4HRX, IVI-KHD2-4HRX
Operating control interface units using the 3964R protocol
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
epperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
Date of issue 27.08.2001
49
Whenever "DLE" is sent, this further increases the volume of data. If the data output
exceeds 256 bytes, an error message is transmitted.
8.3 Error and status messages when using the 3964R protocol
The number of bytes to be read out is limited by the maximum number
of bytes (256) in response and follow-up messages. If read head-no.
"X" is selected, 125 bytes can be read in each of two successful read
operations, 83 bytes in each of 3 and 62 bytes in each of four read ope-
rations.
Hex
Value
Signification
00 No error
01 Memory error in control interface unit after RAM test
02 Memory error in control interface unit after ROM test
03 Unable to understand command
04 Parity error in serial communication
05 Write error
06 Read head not connected or not ready
07 No code or data carrier is available, or an error has occurred during
data transfer between code or data carrier and control interface unit
08 Parity or CRC error during transmission with code or data carrier
09 Address or quantity of data outside valid range
0A Programmable Array Logic (PAL) frozen in read head
0B Watchdog reset
0C Echo error in inductive transmission
0D Function not available with the selected data carrier
0E A read head of older technology is connected
0F Synchronization error at nibble interface
10 Battery low (applies only to 8 and 32 Kbyte data carriers), but the com-
mand was executed successfully
11 Acknowledgment error in transmission to data carrier
12 Too much data for 2 messages
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