User Manual

2–65Command Word/Bit Descriptions
Publication 1771-6.5.88 – July 1997
LPC
Bit-mapped Control Words
Word Bit Description
LPC01 Block ID = 00000110 (Low byte). High byte reserved for the module. Do not use.
LPC02 Configuration Selections
B00-B03 Open
B04-B06 Selected Pressure Control Valve
the module uses its algorithm to drive the following output during any Clamp Low Pressure Close Profile.
B06 B05 B04
0 0 0 Output #1
0 0 1 Output #2
0 1 0 Output #3
0 1 1 Output #4
1 0 0 Output #5
1 0 1 Output #6
1 1 0 Output #7
1 1 1 Output #8
B07 Pressure Algorithm Selection
= 0 Dependent Gains (ISA)
= 1 Independent Gains (A-B)
B08 - B15 Open
LPC03 - 05 Open
Expert Response Compensation (ERC) Percentage
Word Description
LPC06 Minimum Pressure Control ERC Percentage [31]
Although error coding allows range of 00000 to 09999, the module limits it to a minimum of 01000.
Watchdog Timers
Word Description
LPC07 Tonnage Watchdog Timer Preset [21]
When the module completes the Clamp Low Pressure Close Profile and sets its outputs to LPC33 - LPC40, it:
S starts an internal Tonnage Watchdog timer
S
stops this timer when it sets master status bit SYS03
-
B02 and reports the accumulated value of the timer in SYS57
S stops this timer when it sets master status bit SYS03-B02 and reports the accumulated value of the timer in SYS57
S resets SYS57 to zero when it detects an F-to-T transition of DYC03-B00
S sets master status bit SYS04-B15 when SYS57 equals or exceeds this entry
A zero entry inhibits SYS04-B15.
LPC08 Profile Watchdog Timer Preset [21]
When the module starts the Clamp Low Pressure Close Profile, it:
S starts an internal Profile Watchdog timer
S stops this timer and resets its accumulated value to zero (after reporting total execution time in CPS60) when it completes the
S stops this timer and resets its accumulated value to zero (after reporting total execution time in CPS60) when it completes the
profile
S sets master status bit SYS04-B03 when the accumulated value of this timer equals or exceeds this entry
A zero entry inhibits SYS04-B03.
Unselected Valve Set-output Values
When the module starts the Clamp Low Pressure Close Profile, it:
• sets its unselected outputs to the values listed below
• ignores the unselected value of the selected output
• uses ramp rates LPC17 - LPC32 to ramp unselected outputs
LPC – Clamp Low Pressure
Close Configuration Block