Denso BHT-400-CE, Reference Manual

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CODE-39 (M)
[Syntax]
M [:[mini.no.digits[-max.no.digits]][CD]]
The mini.no.digits and max.no.digits are the minimum and maximum numbers of barcode digits to be
read by the BHT, respectively. These do not include the start and stop characters.
These numbers must both be between 1 and 99 (inclusive) and satisfy the following condition:
mini.no.digits ≤ max.no.digits
If both mini.no.digits and max.no.digits are omitted, the default reading range will be from 1
to 99 digits. If only max.no.digits is omitted, the BHT will only be able to read as many digits
as specified by mini.no.digits.
CD is used to specify a check digit(s). If C is specified, barcodes are checked based on
MOD-43. The number of check digits is included in the number of digits to be read.
[Ex.] To enable the BHT to scan Code 39 with mini.no.digits 8, max.no.digits 12, and
MOD-43:
[VB] MyScanner.RdType = "M:8-12C"
[C#] MyScanner.RdType = "M:8-12C";
[Ex.] To enable the BHT to scan Code 39 with mini.no.digits 6 and max.no.digits 10 or with
mini.no.digits 20 and max.no.digits 40:
[VB] MyScanner.RdType = "M:6-10,M:20-40"
[C#] MyScanner.RdType = "M:6-10,M:20-40";