Rockwell-automation 1746-NO8V SLC 500 8-Point Analog Output Module/ Us Manual de usuario descargar pdf (Pagina 67)

Publication 1746-UM026A-EN-P - September 2003

Replacing 1746-NO4s with 1746-NO8 B-3

Channel Status Words

In Class 1 mode, the 1746-NO8 provides one status input word per

channel which is not available with the 1746-NO4. Consideration

should be given to implementation of user program logic to monitor

the status when converting from the 1746-NO4 module.

The Channel Status Words are addressed as follows:

In Class 1 mode, each channel status word contains the following

useful status information:

Bits 1 through 11 provide additional status information when Class 3

mode is configured. For more definition of status word bit use, refer

to Chapter 4.

Table B.3 1746-NO8V and 1746-NO4V Output Range

Voltage Range Decimal Representation for

Output Word

Resolution per LSB

-10 to +10V dc -32,768 to +32,764 1.22070 mV

0 to 10V dc 0 to 32,764

0 to 5V dc 0 to 16,384

1 to 5V dc 3,277 to 16,384

1746-NO8 Status Word Addressing

• I:3.0 - Slot 3, Channel 0 Status Word • I:3.4 - Slot 3, Channel 4 Status Word

• I:3.1 - Slot 3, Channel 1 Status Word • I:3.5 - Slot 3, Channel 5 Status Word

• I:3.2 - Slot 3, Channel 2 Status Word • I:3.6 - Slot 3, Channel 6 Status Word

• I:3.3 - Slot 3, Channel 3 Status Word • I:3.7 - Slot 3, Channel 7 Status Word

151413121110 9 8 7 6 5 4 3 2 1 0

Fatal Channel Error (0 = OK, 1 = error)

Module/SLC Resetting (0 = OK, 1 = reset)

Current Loop Open (0 = OK, 1 = open)

24V Power Failure (0 = OK, 1 = failure)

Channel Enabled (0 = off, 1 = on)

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 73 74

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Rockwell-automation 1746-NO8V SLC 500 8-Point Analog Output Module/ Us Manual de usuario Pagina 67