Marathon Computer V3.5 user manual No effect on event

MMI Product Documentation

Limit Statements

There are various ways to force a program to wait for something to happen. Although it may seem that the specified condition should be easily satisfied, it is still wise to put realistic time limits on how long the wait should be.

The following chart summarizes the effect the LIMIT statement has on each OPCODE.

Effect of Limit Statement on OPCODES

OPCODE Effect of Limit Statement

AEffective with alarm codes 80 and 81. An 80 or 81 -- limit statement sets deviation band in degrees, decimal point is ignored (i.e. 1.00 is 100 degrees)

b	No Effect*
C	No Effect*
d	No Effect*
E	No effect on event

output. On event input, sets the maximum amount of time to wait for that event to occur. An alarm 93 is displayed or sounded.**

G	No Effect*
H	Forces a wait and

sets the maximum amount of time to wait for the temperature to reach setpoint +10 F(+5 C).**

hSets maximum time to wait for a condition to be met.**

I	No Effect*
J	No Effect*
L	No Effect*
n	No Effect*

Unipro 3.5 Process Control 1 Aug. 1997