Toshiba nv Series Instruction Manual page 22

Chapter 1 Introducing the IS911 Module
2. 1:N transmission
(2) Data input / output
via TC-net I/O Loop
PU821:
SA911:
IS911:
CPU:
CLU:
10
6F8C1509
When IS911 module and MELSEC PLC are connected via RS-422 line, up
to 32 MELSEC PLCs can be connected to IS911 module.
The following figure shows a system configuration example for performing
1:N transmission with MELSEC PLC.
(1) Data is written and read by performing a computer link dedicated protocol
transmission between the IS911 module and the PLC.
(2) The type2 controller inputs / outputs IS911 module transmission data via
the TC-net I/O Loop.
Unified Controller nV
series type2
TC-net I/O Loop
RS-422
Connect the
terminating
resistor.
type2 controller module
TC-net I/O IF module
Serial communication module
CPU unit
Computer Link Unit (AJ71UC24)
Figure 1-6 System configuration example of 1:N transmission of
Note
 For RS-485 / RS-422 line connection, connect a terminating resistor to the
communication module connected to the line end. Refer to "2.4 Transmission
Cable Connection" for how to attach a terminating resistor to the IS911 module.
 Each station must be set with a station number. Set the station number so that
the station number does not overlap. (The station number can be set in the
range of 0 to 31.)
 Only 4-wire (4W) lines can be used.
MELSEC PLC
MELSEC PLC
Station 1
Station 0
RS-422 RS-422
(1) Computer link type
data transmission
MELSEC Computer link
MELSEC PLC
Station 31
RS-422
Termination
ON