Output state byte -18 counter status bytes -18, Output state byte, Counter status bytes – Rockwell Automation 1746-HSCE2 Multi-Channel High Speed Counter Module User Manual
Page 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
0
0
Reserved
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
ROvF
RUdF
COvF
CUdF
CState