Micromod Micro-DCI: 53SL5100A Single Loop Controller Rev. 1 Firmware - Manual (Page 4)

53SL5100 Single Loop Controller Rev. 1 Firmware
2 53SL5100A Single Loop Controller - Addendum
3.0 PROCESS ALARMS 1 AND 2 (PA1 AND PA2)
As with CCO-0, the purpose of CCO-1 is to convert a logic level to a hardware contact condition. The logic
levels applicable to CCO-0 are now selectable from Process Alarm 1 (PA1) alone, or either Process Alarm
1 or 2 (PA1 or PA2). The logic level applicable to CCO-1 is PA2 only. The Process Alarms are configured
with an index value from 0 to 6 that is loaded into the Control Alarm Mode datapoint B335 of the Controller
Module (CON-0). The definitions for PA1 and PA2 therefore vary, depending on the index value of B335.
Descriptions of the PA index values, as well as examples of true conditions, are provided in Table 4-4,
Controller Module (CON-0) of Instruction Bulletin 53SL5100A, Single Loop Controller.
3.1 CCO-0 ALARM SELECT DATAPOINT L084
CCO-0 Alarm Select datapoint L084 determines which Process Alarms affect the state of CCO-0. If L084
is 0, then when PA1 or PA2 is active (1), CCO-0 is active (1). If L084 is 1, then when PA1 is active (1),
CCO-0 is active (1); PA2 has no effect. Table 2 is provided to illustrate the effect of L084 on CCO-0 output
given the states of PA1 and PA2. In Table 2, 1 = active state and 0 = inactive state.
When L084 = 0:
At Line item 1, Neither PA1 nor PA2 = 1; therefore, CCO-0 (L024) = 0.
At Line item 2, PA2 = 1; therefore, CCO-0 (L024) = 1.
At Line item 3, PA1 = 1; therefore, CCO-0 (L024) = 1.
At Line item 4, Either PA1 or PA2 would cause CCO-0 (L024) to equal 1.
When L084 = 1:
At Line item 1, PA1 = 0 and PA2 has no effect; therefore, CCO-0 (L024) = 0.
At Line item 2, PA1 = 0 and PA2 has no effect; therefore, CCO-0 (L024) = 0.
At Line item 3, PA1 = 1 and PA2 has no effect; therefore, CCO-0 (L024) = 1.
At Line item 4, PA1 = 1 and PA2 has no effect; therefore, CCO-0 (L024) = 1.
In Table 2, CCO-1 always has the same state as PA2, because L084 has no effect on CCO-1. (CCO-1 is
always dedicated to PA2.)
Table 2. Process Alarm Selections
Line
Item
When L084 = 0
(PA1 or PA2 Affects CCO-0)
When L084 = 1
(Only PA1 Affects CCO-0)
PA1
(L110)
PA2
(L111)
CCO-0
(L024)
CCO-1
(L025)
PA1
(L110)
PA2
(L111)
CCO-0
(L024)
CCO-1
(L025)
1 0 0 0 0 0 0 0 0
2 0 1 1 1 0 1 0 1
3 1 0 1 0 1 0 1 0
4 1 1 1 1 1 1 1 1
✎ Note
The output of CCO-0 can be inverted as determined by the setting
of the Contact Output Invert 0 (OINV0) datapoint L288. The affect of
this datapoint on CCO-0 output is described in Table 4-7, Contact
Output Module (CCO) of Instruction Bulletin 53SL5100A, Single
Loop Controller.