Schneider Electric Splitter Boxes Información técnica descargar pdf (Pagina 76)

FTB IP67 Devices

31006709 2/2009

Output Error Modes

When communications are lost between the splitter box and the fieldbus master, the

box’s output channels go to a predefined state known as the error value output. You

may configure the error value output for each channel individually. An error value

output is accomplished in 2 steps:

 first by configuring the error (or fallback) mode for each channel

 then, if necessary, by configuring the error value (or fallback state) for the channel

All output channels have an error mode—either predefined state or hold last value.

When a channel has predefined state as its error mode, it may be configured with

an error value, which can be any value in the valid range. When a channel has hold

last value as its error mode, the channel will always remain in its last known state if

communication is lost. It cannot be configured with a predefined error value.

Output error modes are configured at the channel level. By default, the value for

each channel is 1, indicating a predefined state on each channel. If you set a

channel’s output error mode value to 0, the output error mode becomes hold last

value.

Output Error Values

When an output channel’s output error mode is a predefined state, you may set a

value of either 0 or 1 as the value that the output will go to if communication is lost.

The default output error value on all channels is 0.

Output Filter Constant

By default, the Output Filter Constant for each channel is 1, indicating that the

channel’s output will always be set to the commanded value. If you configure a

channel’s bit value to 0, the channel’s output will ignore the commanded output

value and will hold its last value.

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 315 316

Sin comentarios

Schneider Electric Splitter Boxes Información técnica Pagina 76