UM0272 datasheet(14/40 Pages) STMICROELECTRONICS

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System hardware configuration

UM0272

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3.3

Control module connections

Either connectors J11 or J13 can be used to connect the control modules (CM) by wiring the

4 terminals using a twisted and shielded cable. This cable has to be connected to jumper J6

(CM BUS) of the CU.

It is possible to connect up to 8 CMs on the bus line in different ways as shown in Figure 7.

Figure 7.

Control module connections

Once the system is powered up, program the CM address for each module installed. Refer

to Section 5.7: CM Setup for more information on programming CM addresses. Table 6 lists

allowed address ranges.

3.4

Power supply connections

Connect the power supply cable to jumper J2 of the CU.

3.5

Central unit connections

Table 1 describes all the CU main board connectors.

The Initial Settings switch is used the first time the system is installed or to completely erase

all the setup information. Press this switch for approximately 5 seconds when the CU is

completely disabled, to reset all previously programmed parameters (except for the system

date and time) with the factory parameters (see Section 4.3: Configuration using the Control

Module).

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