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4–7 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter
Publication 1794-6.5.15 – December 1998
Definition
Bit Write
Word
Word 1
continue
Bits 06–08
06–10
Calibration Control bits – bits 06, 07 and 08
continued (06–10)
06 Enable bit – When this bit is set (1), the counter can be calibrated.
07 Direction bit – When this bit set (1), calibration is performed in a negative direction; when reset (0),
calibration is performed in a positive direction.
08 Reset bit – Calibration is acknowledged and a new calibration is enabled on a positive edge on this bit.
Bits 09–10 10 09 Gate Control bits
0 0 No gate function on input G
0 1 Counting only if G is high (active)
1 0 Counting only if G is low (inactive)
1 1 Calibration if G is high (active) and ???
Bits 11–12
(13–14)
12 11 Store Control bits – These bits will trigger a Store only if the channel Store status bit (L0 or L1) is
cleared (0).
13–14
0 0 Save the counter value on the positive edge of Z (if Store X = 0)
0 1 Save the counter value on the positive edge of G (if Store X = 0)
1 0 Save the counter value on the negative edge of G (if Store X = 0)
1 1 Save the counter value on the positive edge and negative edge of G (if Store X = 0)
Bit 13 Rollover bit – When set (1), the counter counts up to the preset and then restarts at 0. If this bit is reset (0) (not
rollover), the rollover preset value = FFFF (hex = 65535 (decimal).
Bit 14 Store Reset bit – A positive edge on this bit resets Store X in Signals.
Bit 15 Store Reset bit – A positive edge on this bit resets Preset Reached in Signals.
Word 2 Bits 00–15 Preset 0 – Value to load or compare with counter 0
Word 3 Bits 00–15 Preset 1 – Value to load or compare with counter 1
In this chapter, you learned how to configure your module’s features
and enter your data.
Chapter Summary
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