Talker Block Head/Listener Block Head Setting Switches (Tbh/Tbl/Lbh/Lbl) - Toshiba V Series User Manual

Chapter 3 Hardware
3.8 Talker Block Head/Listener Block Head Setting Switches
(TBH, TBL, LBH, and LBL)
These switches set the head addresses of the FL654 talker area and listener area in the
FL-net cyclic common memory. They are hexadecimal rotary switches, and are located in
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the lower left side face of the module when facing the module. The switches are set using a
small flat-head screwdriver. Because the settings are read at power-ON of the FL654, if you
wish to change a setting, turn OFF the power, change the setting, and then turn ON the
power again. These settings are intended to be set from the integrated controller in the
future, but in the current situations, they are set using these switches.
The FL654 stores data read from the input modules, starting at the head address of the
talker area set using the talker block head setting switch. It periodically sends data in cyclic
transmission.
In contrary, the FL654 reads data starting at the head address of the listener area set using
the listener block head setting switch. It outputs data to the output modules.
The switches set the numbers of blocks that are formed by dividing Area 1 (512 words) or
Area 2 (8K words) of the FL-net cyclic transmission common memory into 256 blocks. The
block numbers range front 0 to FFh, and the high-order digits are set in "**H" and the
low-order digits are set in "**L."
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Area 1: one block = 2 words (512 words / 256 = 2 words)
Area 2: one block = 32 words (8192 words / 256 = 32 words)
Table 3.5 Setting the Transmission and Receive Blocks
Name
High-order digits of talker block head
H
number
TB
Low-order digits of talker block head
L
number
High-order digits of listener block head
H
number
LB
Low-order digits of listener block head
L
number
Setting Description
Model 2000 FL-net (OPCN-2) Remote I/O Station Module (FL654) User's Manual
Setting at Factory
default
0
0
0
0