Pepper Computer RS485, RS232 user manual Function block of the SM-SSI Module Command

SMART I/O User’s Manual Chapter 6 Communications Modules

6.2.13 ISaGRAF Programming

6.2.13.1 The ISaGRAF Board Parameters

Because this module has not been defined as a physical board in the ISaGRAF project, it has been created as a function block as shown in figure 6.2.13.1.1.

Figure 6.2.13.1.1 Function block of the SM-SSI Module

Command

One of:

FB_SSI_INIT

FB_SSI_SETPOINT

This is the command that must be executed to initialize the module before operating the SSI interface - normally at the beginning of an ISaGRAF program cycle. Also, prior to using this call, if the ctrlx variables have been defined with a value, then these will be sent to the SM-SSI Module.

This gives the user the possibility to enter a value for the comparator register when testing for a match between the actual read-back value and the desired value. The compare value should be defined prior to using the call.

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