IDENT-I • IVI-KHA6-4HRX, IVI-KHD2-4HRX
Commands
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
26
Test control interface unit memory
Entering this command initiates a check of the external RAM and EPROM.
Quit
This command can be used to cancel a command in Auto mode.
Enable double-sided Read mode
This is for applications where a data carrier is to be read not only from the front but
also from the back. This applies only to data carriers which are not designed for flush-
mounting in steel. The command results in an attempt to read from or write to the front
of the data carrier. If this fails, the read/write operation is repeated from the other side.
This function is disabled by the Restart command (o).
Restart
This command re-initializes the control interface unit, taking account of the DIP switch
settings. The command disables the double-sided read mode and cancels all auto
mode commands. The default data carrier type is the IDC- ... -1K data carrier.
Check sum calculation
Calculate the check sum as follows:
1. Add together all values within the command which precede the check sum position.
2. If the sum is greater than FF (hex.), then the check sum will comprise only the
last two (hex.) digits.
Command: c <CHCK><ETX>
Response: c <Status><CHCK><ETX>
Example: Command: c 63h 03h
Command: q <CHCK><ETX>
Response: q <CHCK><ETX>
Example: Cancel command for both read-heads: Command: Q 51h 03h
Command: b <CHCK><ETX>
Response: b <CHCK><ETX>
Example: Command: B 42h 03h
Command: o <CHCK><ETX>
Response: o <CHCK><ETX>
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