HF Bus Mode – Overview
6
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2 HF Bus Mode – Overview
In HF bus mode, up to 32 bus-compatible read/write heads per RFID channel can be connected
to the TBEN module. Depending on the number of read/write heads connected and the power
consumption of the connected heads, an additional power supply may be required. In order to
determine whether an additional power supply is required, a power consumption analysis of
the connected read/write heads must be performed. A tool to help calculate the power con-
sumption of the read/write heads is available at www.turck.com/hf-busmodus.
Every connected read/write head supplies a "tag present" signal in HF bus mode. By default, a
command can only be processed by one read/write head, making HF bus mode suitable for
static applications and slow dynamic applications.
In Continuous HF bus mode, a command is performed simultaneously at all read/write heads in
a bus topology. The logged data is stored in the ring memory of the module.
TBEN-S2-2RFID-4DXP
VT2-FKM5-FKM5-FSM5
RFID connection cable
(e.g. RK4.5T-0.3-RS4.5T/S2503)
TN-M18-H1147/C53
TN-CK40-H1147/C53
TN-M30-H1147/C53
up to 32 per port
Fig.1: HF bus mode setup
The following read/write heads can be used for HF bus mode:
n TN-M18-H1147/C53
n TB-M18-H1147/C53
n TN-M30-H1147/C53
n TB-M30-H1147/C53
n TN-CK40-H1147/C53
n TNSLR-Q42TWD-H1147/C53
n TB-Q08-0.15-RS4.47T/C53
n TB-Q08-0.15-RS4.47T/C53
n TN-Q14-0.15-RS4.47T/C53
n TNSLR-Q80WD-H1147/C53
HF bus mode supports the HF read/write heads from firmware version Vx.90. Continuous HF
bus mode supports the HF read/write heads from firmware version Vx.93. On the TBEN-
S2-2RFID-4DXP module, continuous HF bus mode requires firmware version V3.6.1.0 or later.
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