Rockwell-automation 1746-HSCE2 Multi-Channel High Speed Counter Module Manual de usuario descargar pdf (Pagina 38)

Publication 1746-UM002B-EN-P - August 2004

2-18 Module Operation

OP MODE: Operating Mode Bits

The module uses these two bits to tell the processor what mode it is

in. In class 1, the data value that an input word contains changes

based on the operating mode.

Table 2.2 Mode Bit Settings

Output State Byte

These bits correspond to the real or virtual state of the outputs. Bits 00

through 03 represent real outputs. Bits 04 through 07 represent virtual

outputs.

Counter Status Bytes

Each counter has an associated status byte. The format of the byte

depends on the module’s class of operation as shown below.

Figure 2.14 Class 1 Counter Status Byte Format

Figure 2.15 Class 4 Counter Status Byte Format

Bit 09 Bit 08 Mode

00Reserved

0 1 Mode 1

1 0 Mode 2

1 1 Mode 3

15 14 13 12 11 10 09 08

07 06 05 04 03 02 01 00

C/R

0 ROvF RUdF COvF CUdF CState

15 14 13 12 11 10 09 08

07 06 05 04 03 02 01 00

0 0 ROvFRUdFCOvFCUdF CState

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 139 140

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Rockwell-automation 1746-HSCE2 Multi-Channel High Speed Counter Module Manual de usuario Pagina 38