---

	ld	sv-101	// get valve status
	and	pmp-101on	// and pump motor signal
			// both must be on to simulate flow
	jmpc	Flow100	// set for 100 hz signal
	ld	0	// no flow so shut off signal generator
	jmp	UpFlow	// update signal generator
Flow100:	ld	1	//  set for 100 hz signal
UpFlow:	sig	flow-100	// set output

//
// Simulate Flow meter with 1 pulse/gallon output
//        

	ld	5	// set for 5 seconds open and close
	st	T#LS102Ton.pt	// set timer program time - Ton
	st	T#LS102Tof.pt	// set timer program time - Tof
	ld	sv-102	// get solenoid status of valve
	st	T#LS102Tof.in	// gate for timer -- if solenoid on
	ton	T#LS102Ton	// Do Timer timer on logic
	st	T#LS102Tof.in	// gate for timer -- if solenoid off
	tof	T#LS102Tof	// Do Timer timer off logic
	jmpc	SlowOpen	// jmp if solenoid valve active
	ld	T#LS102Tof.ot	// get status of TOF timer
	jmp	UpdateLS102	// Update valve status
SlowOpen:	ld	T#LS102Ton.ot	// get status of timer
UpdateLS102:	stn	ls-av102	// update status of limit switch

//
// Simulate a fill valve on top of a tank that is slow reacting
// The fill valve has a N.C. set of contacts
//        

	ld	sv-101	// get valve status
	and	pmp-101on	// and pump motor signal
			// both must be on to simulate filling
	jmpcn	NotFill	// jump if not filling
	ld	Lv-101	get current tank level
	add	1	// increase level (update d/a  - 4 - 20ma)
	st	Lv-101	// update level
NotFill:			// simulate material draining from tank if discharge
	ld	sv-101a	// valve open
	jmpcn	NotDis	// jump if valve not open
	ld	Lv-101	// get current level
	sub	1	// decrease d/a count by one
	st	Lv-101	// update level
NotDis:

//
//        Simulate tank filling
//        Tank has a 4 -20 ma level sensor
//        Pump and Fill valve must both be active to begin filling
//

	ld	pmp-101on	// motor control run signal
	st	pmp-101run	// update motor running contact

//
//  Transfer pump simulation
//  Motor run contact is N.O.
//

//
// Simulate a fill valve on top of a tank and discharge valve on bottom
// Valves have a N.C. set of contacts on the limit switch
//

Start:	ld	sv-101	// Current condition of Fill valve
	stn	ls-av-101	// simulate status of valve to controller
	ld	sv-101a	// Current condition of discharge valve
	stn	ls-av101a	// simulate status of valve to controller

IL Operators	Function
ld	Load the operand value into the IL register
ldn	Load the negation of operand value into the IL register
st	Store the IL register into the operand
stn	Store the negation of the IL register into the operand
s	Sets the operand to 1 if IL register equals True
r	Sets the operand to 0 if IL register equals True
and	And's the operand with IL register - result stored in IL register
or	Or's the operand with IL register - result stored in IL register
xor	Xor's the operand with IL register - result stored in IL register
add	Adds the operand with the IL register - result stored in IL register
sub	Subtracts the operand with the IL register - result stored in IL register
mul	Multiples the operand with the IL register - result stored in IL register
div	Divides IL register by the operand - result stored in IL register
gt	If IL register is > operand  - IL reg set to True otherwise set to False
ge	If IL register is >= operand  - IL reg set to True otherwise set to False
eq	If IL register is = operand  - IL reg set to True otherwise set to False
ne	If IL register is <> operand  - IL reg set to True otherwise set toFalse
le	If IL register is <= operand  - IL reg set to True otherwise set to False
lt	If IL register is < operand  - IL reg set to True otherwise set to False
jmp	Program jumps to label specified in operand
jmpc	Program jumps to label specified in operand if IL reg. = True
jmpcn	Program jumps to label specified in operand if IL reg. = False
Extended Instr.
ton	Timer on logic for timer specified in operand
toff	Timer off logic for timer specified in operand
tp	Pulse logic for timer specified in operand
sig	Sets operand  to signal generator with divider specifiied in IL reg

Label	Operator	Operand	Comments
Start:	ld	PMP101	// Motor On Signal from Controller
	st	PmpRun101	// Set Status of motor to controller

The operator indicates which operation will be made between the current (IL) register value and the operand. The result is always stored in the IL register.
 
Syntax: