254764-001 Rev B 56
f.
Symbol Contrast grade (Programmable,
~PB804xxx100)
g.
Overall ANSI Grade (Programmable,
~LAxx)
h.
No Read (if sync is received)
i.
Number of codes per sync programmable
(~LN##, ~LZ##)
j.
X dimension Range (Programmable
~PB811xxxyyy)
k.
Ratio (Programmable
~PB815xxx000
)
l.
Symbology modulo check digit
m.
I 2 of 5 optional Mod 10 Check Digit data error (if enabled)
n.
Data Match Error (~BC – see Operator’s Guide)
o.
Increment or Decrement data error (~Br – see Operator’s Guide)
B.
LED Operation
1.
LED1 will turn on when Ports 1 and 2 are active due to ANSI, Symbol Contrast, X dimension,
ratio, mod check or quiet zone error conditions.
2.
LED1 will flash when Ports 1 and 2 are active due to a data increment or decrement error
condition.
3.
LED2 will turn on when Ports 1 and 2 are active due to a partial, % decode or no read error
conditions.
4.
LED2 will flash when Ports 1 and 2 are active due to a Data Match error condition.
5.
Flashing indication will override a solid on indication if both types of error conditions occur.
Note; Both LEDs can be on in cases where multiple bar codes are analyzed in a sync period.
C.
SV Commands Important to this System
This system is operating in a “mode” rather than fully programmable logic. The port activation parameters
are programmable via the ~PB8 rather than ~PB1, ~PB2, etc. for each individual port. Other commands,
such as mode commands are also available. The commands most useful for this system application are
described below. Please see the SV 2 Series Operator’s Guide for additional command description details.
~LV18
This command sets this mode of operation.
~Lp0
This command turns off all partial decode logic at the decoder level
~Lp1
This command turns on partial decode logic at the decoder level
~LQ1
This command allows partial decodes to activate the output ports
~LQ0
This command disables partial decodes to activate output ports.
~LAxx
This command sets the passing threshold for the Overall ANSI method Symbol Grade. For example:
~LA28 causes an Overall Symbol Grade of 2.7 or lower calculated for the code analyzed to set a failure
condition for this parameter.
~LDxx
This command sets the % decode threshold for a passing condition. If analyzing poorly printed symbols, it
is recommended that partial decodes be enabled at the decoder level when this command is enabled.
xx = failure threshold. Example ~LD75: if 74 % or less of scans on a code were not fully decoded, this sets
a failure for this parameter.
