Matrix-orbital VFD2041 Legacy Manual de usuario descargar pdf (Pagina 16)

NOTE The GPOs do not have any over current or over / under voltage protection so

care must be taken when using them. For instance if the external device is a relay, it must

be fully clamped using a diode and capacitor to absorb any generated back electro-motive

force (EMF).

Figure 18: Clamping a Relay

3 Displaying Text

This chapter describes the various text display commands in detail. Before issuing commands to the

VFD2041 please read sections 6.2 and 6.3.

3.1 General

Text is displayed on the VFD2041 using the built in 5x7 dot matrix font, in addition to up to 8 user

deﬁned characters.

3.2 The Built in Character Font

The display includes a built in 5x7 dot matrix font with the full range of ASCII characters plus a variety

of extended characters.

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