Starting up the device - Configuration
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BCL 248i
61
Output data length
1 byte consistent
NOTICE
If several bar codes are decoded in sequence without the acknowledge mode having been acti-
vated, the input data of the result modules are overwritten with the respective most recently read
decoding result.
If a data loss in the control is to be avoided in such a case, mode 1 (with ACK) should be acti-
vated.
If multiple decoding results occur within one reading gate, it is possible - dependent on the cycle
time - that only the last decoding result is visible on the bus. In this case, the acknowledge mode
MUST be used. There is otherwise a risk of data loss.
Multiple, individual decoding results may occur within one reading gate if module 12 – Multi-la-
bel (see chapter 8.7.3 "Module 12 – Multi-label") or one of the identifier modules (see chapter
8.10 "Identifier") is used.
Data reset behavior
If the data reset control bit is activated, the following actions are carried out:
1. Deletion of decoding results that may still be stored.
2. Reset of module 13 – Fragmented read result (see chapter 8.7.4 "Module 13 – Fragmented read re-
sult"), i.e., even a partially transmitted read result is deleted.
3. Deletion of the input data areas of all modules.
Exception: The input data of module 60 – device status (see chapter 8.11.1 "Module 60 – Device sta-
tus") is not deleted. For the status byte of decoding result modules 20 … 27 (see chapter 8.8.2 "Mod-
ules 21-29 – Decoding result"), the two toggle bytes and the reading gate status remain unchanged.
See also
2
Module 20 – Decoder state [
}
65]
8.7.2
Module 11 – Reading gate control
PROFINET-IO module identifier
Module ID: 1011
Submodule ID
Description
With the module, the reading gate control of the bar code reader can be adapted to the application. With
different parameters from the bar code reader, a time-controlled reading gate may be created. In addition, it
defines the internal criteria for the reading gate end and the completeness inspection.
Parameter
Tab. 8.8:
Parameters for module 11
Parameter
Description
Addr. Data type
Value range
Default
Automatic read-
ing gate repeat
The parameter defines the
automatic repeat of reading
gates.
0
Byte
0: No
1: Yes
0
