Recipe screens – Maple Systems OIT Family (ASCII) User Manual
Page 26
Recipe Screens
Recipe screens can be used to setup a batch process that utilizes some predetermined number
of ingredients. For example, a plastics factory makes three kinds of polyethylene bags. Each
kind of bag has unique characteristics:
Additional settings for controlling the bag machine may also be required (for example: seal-
ant time, sealant temperature, etc.) which are governed by the type of bag produced. For each
bag, the parameters listed above must never change. Therefore, when producing these bags,
the floor personnel should not be allowed to change the bag characteristics. The OIT opera-
tor need only decide how many bags to make per run.
The OIT programmer would configure a recipe preset constant for each characteristic of the
bags. Then the OIT operator would simply go to the screen containing the correct bag recipe
and download the preset constant values to the ASCII host. If minor changes are needed, the
OIT can be taken off-line and reprogrammed while the ASCII host continues to operate.
Recipe screens have the following properties which differ from other types of screens:
1. Each recipe can store up to 20 preset constants which are placed by the OIT into the
OIT’s data registers at the press of a key on the OIT. For security, these preset
constants are not displayed on the recipe screen but are predetermined at the time of
programming the OIT.
2. Each recipe has a gate coil, which is an OIT coil register that the OIT uses to signal the
ASCII host that the recipe has been downloaded to the OIT’s data registers. If the “Notify
Host of Read/Write Register Monitor Updates” feature is enabled, when the gate coil is
activated the OIT notifies the ASCII host. If this feature is disabled, the ASCII host will
have to read the gate coil using the Read OIT Memory control command.
3. A character space in the bottom right corner of the recipe screen is reserved for the
recipe screen initiator. The initiator is a single character ‘Y’ or ‘N’ which appears
when the recipe screen is displayed.
FEATURES
25
1010-0088, REV02
Length
Width
Thickness
Shape
Color
Bag A
Bag B
Bag C
11"
15"
10"
8.5"
4"
10"
3 mm
2 mm
1 mm
fold top
sealed top
rounded
clear
black
green
2
3
4
6
5
7
8
MESSAGE ALARM
RUN
1
0
7
4
8
5
1
2
9
6
3
.
PAGE
ACK
ALARM
DOWN
MESSAGE
PAGE
UP
NEXT
LAST
MESSAGE
TOGGLE
HELP
SETUP
SCREEN
DELETE
CLEAR
E
N
T
E
R
F1
F5
F9
F2
F6
F10
F3
F7
F11
F4
F8
F12
Number of bags: 512
Start Process: N
BAG A PROCESSING SCREEN