Connection With Intelligent Pi/O System - Toshiba V Series User Manual

1.3 Connection with Intelligent PI/O System

The L3 controller can be connected with an intelligent PI/O system via serial bus.
Connection with an intelligent PI/O system requires the following components, for system
construction:
• Communication base unit (USCB1)
• Communication module (SBIF1/SBIF2)
• Serial bus (ZCS004A***1)
• Terminal unit (UT***)
• I/O bus (ZCS005A***1)
• Terminal resistor (FSTM1)
• Serial bus terminator (UTMN3)
• Relay cable (ZCS010A***1)
• Relay terminal unit (4TBBEMB007F31S)
For connection of the main unit to an intelligent PI/O system, connect relay cable with
serial bus via the relay terminal unit. Standard serial bus is duplexed (lines A and B). A
maximum of 15 communication base units can be connected to each line of this serial
bus, and a maximum of 14 terminal units to I/O bus. Communication modules can also
be connected for duplex configuration. For duplex configuration, install two
communication modules in the communication base unit. For single configuration, install
one communication module on the left side (P).
Be sure to terminate the serial bus with a terminal resistor, and the I/O bus with a serial
bus terminator.
IMPORTANT
• Communication module (SBIF1) and high-speed communication module (SBIF2) cannot be
connected to the same I/O bus (the same communication base unit).
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1.3 Connection with Intelligent PI/O System
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