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1

Overview

The IMS B300 is a complete fully cased sub-system unit that supports the development of applications in a networked

environment. Up to four target systems can be connected to the IMS B300. These can be connected up via differential

cables to a target with a differential interface, such as the ST20450 Development Board or via a single ended cable such

as the IMS CA16

connections avoids the need to install interface hardware within each type of workstation.

The IMS B300 contains a high performance multi-processor implementation of the TCP/IP protocol stack, giving a net-

work interface that is easily integrated into open-systems environments. A link service is offered over TCP connections

giving transparent access to four subsystem and link interfaces from a host based environment.

Multiple IMS B300 systems can be installed for larger development groups, with shared access facilities controlled using

a system of named link ‘capabilities’.

The status and configuration of each IMS B300 system can be examined and monitored using an attached serial terminal

which gives access to an interactive display capability. Front panel LEDs also give a continuous display of system activity.

2

Interfaces

2.1

Connection to Ethernet

The network connection provides an IEEE-802.3 AUI connection. This allows connections to either 10BASE-5,

10BASE-2 and 10BASE-T physical media via suitable ‘tap boxes’.

A standard IEEE 802.3 AUI cable should be used to connect the IMS B300 to an Ethernet transceiver. The cable should

be secured to the back panel connector using the slide lock provided. Suitable cables are available from transceiver ven-

dors.

2.2

Connection to diagnostic terminal

The serial port on the rear panel may be connected to an ANSI compatible video terminal to give interactive information

displays on the operation of the IMS B300. If this connection is not used, the IMS B300 will still operate as normal. Stan-

dard RS232 levels are used on the serial port (male 9-way D-type) which has a pin-out equivalent to that of an IBM PC

AT serial socket. The serial cable supplied with the IMS B300 works with VT220 and VT320 ASCII terminals and compa-

tibles or PCs running ASCII terminal emulation. The software on the IMS B300 programs the serial port to run at 9600

baud, 8 data bits, 1 stop bit, with XON/XOFF flow control. It is not necessary to use the hardware flow control lines (RTS

and DTS) provided on the connector. An example cable description for the terminal cable is given in Figure 1.

9–way

female

D–type

25–way

female

D–type

pin 2

pin 3

pin 5

pin 2

pin 3

pin 7

IMS B300

Terminal

Figure 1

Example cable connection to diagnostic terminal

2.3

Diagnostic functions

Diagnosis and monitoring of a ‘live’ unit is achieved via a serial port on the IMS B300. This expects to communicate with

an ANSI compliant video terminal. A set of LEDs on the box front panel gives diagnostic information about the state of

each interface.