Rockwell Automation 2080-LC50 Micro830 and Micro850 Programmable Controllers User Manual - Manual (Page 142)

126 Rockwell Automation Publication 2080-UM002F-EN-E - December 2013
Chapter 8 Use the High-Speed Counter and Programmable Limit Switch
Output Mask Bits (HSCAPP.OutputMask)
The HSCAPP.OutputMask defines which embedded outputs on the controller
can be directly controlled by the high-speed counter. The HSC sub-system has
the ability to directly (without control program interaction) turn outputs ON or
OFF based on the HSC accumulator reaching the High or Low presets. The bit
pattern stored in the HSCAPP.OutputMask variable defines which outputs are
controlled by the HSC and which outputs are not controlled by the HSC.
For example, if the user wants to control outputs 0, 1, 3, using HSC then the user
needs to assign,
HscAppData.OutputMask = 2#1011
(OR using Decimal Value: HscAppData.OutputMask = 11)
The bit pattern of the HSCAPP.OutputMask variable directly corresponds to the
output bits on the controller. Bits that are set (1) are enabled and can be turned
on or off by the HSC sub-system. Bits that are clear (0) cannot be turned on or
off by the HSC sub-system. The mask bit pattern can be configured only during
initial setup.
The following table shows example of how HPOutput and OutputMask controls
Embedded output.
TIP Data loaded into the underflow variable must be less than or equal to
the data resident in the low preset (HSCAPP.LPSetting) or an HSC error
is generated.
Description Data Format User Program Access
HSCAPP.OutputMask word (32-bit binary) read/write
Effect of HSC Output Mask on Embedded Outputs
Output Variable 32-Bit Signed Integer Data Word
32…20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
HSCAPP.HPOutput (high
preset output) 0 1 0 1 0 1 0 1 0 0 1 1 0 0 0 1 1 0 0 1
HSCAPP.OutputMask
(output mask) 1 1 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 0 1 1
Embedded output
(10-point) 0 1
Embedded output
(16-point) 0 1 0 1
Embedded output
(24-point) 1 0 1 0 1