52
Operating Modes
Section 5-1
5-1
Operating Modes
The ID Sensor Unit has two operating modes: Normal Mode and Test Mode.
The mode to be used is set on the communications test switch on the Unit’s
front panel.
5-1-1
Normal Mode
In normal mode, communications are performed when the Command Execu-
tion Bit (word n, bit 0) in the Special I/O Unit Area turns ON. All commands
can be used in this mode. Communications results and Unit status are shown
on the status indicators and in the Unit Status (word (n + 7)), Results Informa-
tion (word (n + 8)), and Processing Results Monitor (word (n + 9)) in the Spe-
cial I/O Unit Area.
5-1-2
Communications Test Mode
Communications tests can be performed by turning ON the communications
test switch on the Unit’s front panel. Communications tests are performed
without reference to the CS/CJ-series CPU Unit operating status. The Test
Mode Flag (word (n + 7), bit 14) in the Unit Status in the Special I/O Unit Area
will turn ON while the ID Sensor Unit is in this mode.
Communications test results and Unit status can be checked on the Unit’s
front panel indicators and in the Processing Results Monitor (word (n + 9)) in
the Special I/O Unit Area (refer to page 48). The status in Results Information
(word (n + 8)) the Special I/O Unit Area will hold the status that existed before
Test Mode was entered.
Communications Test
Mode Operation
Read and write operation will be repeated at 1-second intervals for Data Car-
rier address 0000 (hex). For a Double-head Unit, status will be read and writ-
ten alternately for both Heads.
Note
1.
If the ID Sensor Unit is changed to Test Mode while a command is being
executed, command execution will be completed and then Test Mode will
be entered.
2.
If an ID Sensor Unit error occurs, communications will stop regardless of
the operating mode.
3.
First word allocated to Unit in CIO Area: n = CIO 2000 + 10
×
unit No.
5-2
Communications Specifications
There are three execution sequences that can be used to communicate with
the Data Carrier. The sequence is specified in the Communications Specifica-
tion (word (n + 1), bit 04 to 07) in the command settings in the Special I/O Unit
Area.
Name
Communications
specification
Description
Trigger
0
When the Command Execution Bit turns ON, communications are performed with the
Data Carrier in the communications area and processing is ended.
Single auto
1
After the Command Execution Bit turns ON, the ID Sensor Unit waits until a Data
Carrier is detected in the communications area, communications are performed, and
processing is ended.
Repeat auto
2
The operation for a single auto designation is repeated. Once communications have
been completed with a specific Data Carrier, communications will not be performed
with it again even if it remains in the communications area. Processing is ended
when the Abort Bit is turned ON.
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