Omron DEVICENET#05-2003 Operation Manual page 192

GT1-CT01 Counter Unit
BCD (Data Code Switching Bit OFF)
Set the output conditions with 3 bits.
000:
Not 000: Present value
(Whether output is actually made depends on the settings
of the External Output Enable Bits, word n+2 bits 08, 09)
Set the sign with 1 bit.
0: Positive
1: Negative
Hexadecimal (Data Code Switching Bit ON)
Set the output conditions with 3 bits.
000: Present value
Not 000: Present value
(Whether output is actually made depends on the settings of
the External Output Enable Bits, word n+2 bits 08, 09)
Word Functions
182
3. Setting of the set values can be performed regardless of whether or not
count operation is being carried out. Due to the communications time re-
quired for remote I/O communications, however, timing for setting cannot
be made with perfect accuracy during count operation.
Word n+1
Present value Set value
Set value
Word n+1
Set value
Set value
Reading Set Values 1 and 2
By switching ON the Set Value 1 Reading Bit (word n+2, bit 04) or the Set
Value 2 Reading Bit (word n+2, bit 05), the set values can be read and stored
in words m, m+1 of the input area. When this is performed, the set output con-
ditions will also be read. The format of the stored value will be the same as
that at setting.
Note The values will be stored in either BCD or hexadecimal, according to the set-
ting of the Data Code Switching Bit (word n+2, bit 03).
The Counter Unit is allocated output word 3 and input word 3 in the allocated
area of the Master. Readings of the settings and status of the Counter Unit
are made from the Master via this area.
This section describes the functions of the words that the Counter Unit uses.
In the following explanation, word n refers to the first word in the output area,
and m word refers to the first word in the input area.
Note 1. For details about allocation in the allocation area in the Master, refer to the
DeviceNet Operation Manual (W267).
2. If the power supply from the I/O unit interface to the Counter Unit stops, the
Counter Unit will stop count operations. If this happens, it will be necessary
to start up the Counter Unit again. Furthermore, when this is carried out,
the present value, the set values, and the count modes will all be cleared
and so these settings will also have to be made again.
Output ON
Output ON
When setting negative numbers, use the 24 bit 2's com-
plement (the last 24 bits of the 32 bit 2's complement).
Example: To set 10,000
10,000 (decimal)
plement)
Output ON
Output ON
Word n
Word n+2
FFFF D8F0 Hex (32-bit 2's com-
FF D8F0 Hex (24-bit 2's complement)
Section 5-4