Operation
4-5
Front panel control
NOTE
For the Model 7002, you can use the light
pen to open and close channels.
Closing and opening channels
A channel is closed from the front panel by simply keying in
the channel assignment and then pressing CLOSE. For
example, to close channel 16 of a relay card installed in slot
2, key in the following channel list and press CLOSE:
SELECT CHANNELS 2!16
The above closed channel can be opened by pressing OPEN
or OPEN ALL. The OPEN key opens only the channels spec-
ified in the channel list, and OPEN ALL opens all channels.
The following display is an example of a channel list that
consists of several channels:
SELECT CHANNELS 2!1, 2!3, 2!12-2!15
Notice that channel entries are separated by commas (,). A
comma is inserted by pressing ENTER or the right cursor
key (
'
). The channel range is specified by using the hyphen
(-) key to separate the range limits. Pressing CLOSE will
close all the channels specified in the channel list. Pressing
OPEN (or OPEN ALL) will open the channels.
Channel patterns can also be used in a channel list. This
allows you to control specific bit patterns for logic circuits.
Example:
SELECT CHANNELS 2!1, M1
Pressing CLOSE will turn on channel 2!1 and the channels
that make up channel pattern M1. Refer to the mainframe
instruction manual for information on defining channel
patterns.
Scanning channels
Channels are scanned by creating a scan list and configurin
the Model 7001/7002 to perform a scan. The scan list is cre-
ated in the same manner as a channel list (see Closing and
opening channels). However, the scan list is specified from
the SCAN CHANNELS display mode. (The SCAN LIST
key toggles between the channel list and the scan list.) The
following shows an example of a scan list:
SCAN CHANNELS 2!1, 2!3, 2!11-2!15
When a scan is performed, the channels specified in the scan
list will be scanned in the order that they are presented in the
scan list.
A manual scan can be performed using the RESET default
conditions of the Model 7001/7002. RESET is selected from
the SAVESETUP menu of the main MENU. When RESET
is performed, the mainframe is configured for an infinit
number of manual scans. The first press of STEP takes the
mainframe out of the idle state. The next press of STEP will
close the first channel specified in the scan list. Each subse-
quent press of STEP will select the next channel in the scan
list.
