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Document: 553632
(ICSTT-RM448_EN_P) Issue: 08:
System Build Manual (AADvance Controller)
Serial Communications
Serial CommunicationsSerial Communications
Serial Communications
The serial ports (S1-1 & S1-2, S2-1 & S2-2, S3-1 & S3-2) support the following
signal modes depending upon use:
RS485fd: A four-wire full duplex connection that features separate busses for
transmit and receive. This selection should also be used when the controller is
acting as a Modbus master using the optional four-wire definition described in
Section 3.3.3 of the Modbus-over-serial standard.
RS485fdmux: A four-wire full-duplex connection with tri-state outputs on the
transmit connections. This should be used when the controller is acting as a
Modbus slave on a four-wire bus.
RS485hdmux: A two-wire half duplex connection appropriate for or master slave
or slave use. This is shown in the Modbus-over-serial standard.
T9300 I/O Base Unit (3 way)
T9300 I/O Base Unit (3 way)T9300 I/O Base Unit (3 way)
T9300 I/O Base Unit (3 way)
The AADvance controller has T9300 I/O base units for the I/O modules. An I/O base
unit supports up to three I/O modules (of any type), and their associated termination
assemblies.
It contains a passive backplane that provides the electrical connections between the
I/O modules and the T9100 processor base unit; i.e. the command and response buses
and the system power.
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