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IDENT-I • IRI-KHD2-4.RX, IRI-KHA6-4.RX
Operating control interface units using the 3964R protocol
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
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
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8.2.4
Admissible Parameters
Bild 8.6:
Structure of the "Read head-no." nibble and the "Head-no" byte
Bild 8.7:
Structure of the head status nibble when no errors detected
8.3
Error and status messages when using the 3964R protocol
Head number
Hex identifier
Nibble
Byte
1
1
1
2
2
2
3
3
3
4
4
4
X
5
5
BIT
Read-head
0
1
1
2
2
3
3 4
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 kilobyte data carriers), but the
command was executed successfully
11
Acknowledgment error in transmission to data carrier
12
Too much data for 2 messages