Rockwell-automation 1746-NO8V SLC 500 8-Point Analog Output Module/ Us Manual do Utilizador descarregar pdf (Página 45)

1 Publication 1746-UM026A-EN-P - September 2003

Chapter

I/O Data and Status Information

Read this chapter to:

• monitor each output channel

• check each channel’s configuration and status

Output Image and Input

Image Overview

Output Image

The output image (defined as the output from the SLC processor to

the module) defines how each channel on your module works.

Table 5.1 1746-NO8 Output Image Operation

Operating

Mode

Output

Image Size

Module Operation

Class 1 8-word The output data words control the output signal level for

each channel.

Class 3 32-word • The output data words control the output signal

level for each channel.

• The configuration words replace configuration

DIP switches that may be used on other modules.

Each configuration word configures one channel.

• The output data parameters 1 and 2 typically

define low and high values for items such as limit

alarms and output clamping. Ramping and preset

output on fault only use output data parameter 1.

• Important - Class 3 features for any particular

channel will only be active if the channel is

enabled. Disabled channels will output 0V (0 mA)

no matter what features are configured.

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Rockwell-automation 1746-NO8V SLC 500 8-Point Analog Output Module/ Us Manual do Utilizador Página 45