Allen-Bradley FLEX I/O 1794-IP4, Руководство пользователя, Страница: 43 / 70

4–5 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter
Publication 1794-6.5.16 – September 1998
Definition
Bit Write
Word
Write
Word 1
Bit 00 Clock frequency for period time measurement – Channel 0 –
0 = period time measurement with 10MHz internal clock selected
1 = period time measurement with 1MHz internal clock selected
Bits 01–03 03 02 01 Number of periods for measurement – Channel 0
0 0 0 1 period
0 0 1 2 periods
0 1 0 4 periods
0 1 1 8 periods
1 0 0 16 periods
1 0 1 32 periods
1 1 0 64 periods
1 1 1 128 periods
Bit 04 Clock frequency for period time measurement – Channel 1 – refer to bit 00.
Bits 05–07 Selection of Number of periods for measurement – Channel 1 – see bits 01–03 above
Bit 08 (10) Clock frequency for period time measurement – Channel 2 – refer to bit 00.
Bits 09–11
(11–13)
Selection of Number of periods for measurement – Channel 2 – see bits 01–03 above
Bit 12 (14) Clock frequency for period time measurement – Channel 1 – refer to bit 00.
Bits 13–15
(15–17)
Selection of Number of periods for measurement – Channel 1 – see bits 01–03 above
Write
Wor 2
Bit 00 Start new measurement bit – Channel 0 – when set, start new measurement on positive edge
Word 2
Bit 01 Start new measurement bit – Channel 1 – when set, start new measurement on positive edge
Bit 02 Start new measurement bit – Channel 2 – when set, start new measurement on positive edge
Bit 03 Start new measurement bit – Channel 3 – when set, start new measurement on positive edge
Bit 04–15
(04–17)
Not used
Write
Words 3
and 4
Bit 04–15
(04–17)
Not used
In this chapter, you learned how to configure your module’s features
and enter your data.
Chapter Summary
Allen-Bradley HMIs