Operation
Using Inventory command and Continuous (Presence Sensing) Mode
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07.00 | 2022/09 | 242
9.13 Using Inventory command and Continuous (Presence Sensing) Mode
The Inventory command and Continuous (Presence Sensing) Mode transfer data to the PLC in
different ways. Continuous Mode is suitable for high-speed applications, in which a command
(e.g. read or write) is to be performed repetitively. Repeated execution of the same command
by the controller is unnecessary.
The following lists the most important differences between an Inventory command and Con-
tinuous Mode:
Inventory Continuous Mode Continuous Presence Sensing
Mode
Triggered reading of UIDs
or EPCs
n Repeated reading of UIDs
or EPCs
n Automatic repetition of the
same command
(e.g. inventory, read, write)
n UHF reader switches on as
soon as a tag is detected
n Repeated reading of UIDs
or EPCs
n Automatic repetition of the
same command
(e.g. inventory, read, write)
Data is displayed in the read
data after the command has
ended.
Data must be read from the
memory of the interface with
a separate command.
Data must be read from the
memory of the interface with
a separate command.
Grouping of EPCs possible Grouping of EPCs possible Grouping of EPCs possible
No buffering on the
read/write device
No buffering on the
read/write device
No buffering on the
read/write device
Terminate command:
1. Timeout
2. Automatically after
command execution
Terminate command:
1. Timeout
2. Stopping the Continuous
(Presence Sensing) Mode
command or Reset
Terminate command:
1. Timeout
2. Stopping the Continuous
(Presence Sensing) Mode
command or Reset
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